{"id":38075,"date":"2021-12-23T15:54:39","date_gmt":"2021-12-23T15:54:39","guid":{"rendered":"https:\/\/www.pei.it\/cz-roletove-kryty-standard\/protezioni-a-soffietto-circolari-cucite\/"},"modified":"2026-04-16T13:14:06","modified_gmt":"2026-04-16T13:14:06","slug":"circular-protective-bellows-stitched","status":"publish","type":"post","link":"https:\/\/www.pei.it\/en\/products\/circular-protective-bellows-stitched\/","title":{"rendered":"Sewn round bellows"},"content":{"rendered":"<div class=\"wpb-content-wrapper\">[vc_row][vc_column][vc_row_inner element_id=&#8221;595341&#8243;][vc_column_inner width=&#8221;3\/5&#8243;]<div class=\"avt_masterslider_el \" >\n\t\t<!-- MasterSlider -->\n\t\t<div id=\"P_MS697a3107cde72\" class=\"master-slider-parent ms-thumbs-template ms-parent-id-37\" style=\"max-width:820px;\" >\n\n\t\t\t\n\t\t\t<!-- MasterSlider Main -->\n\t\t\t<div id=\"MS697a3107cde72\" class=\"master-slider ms-skin-black-2 round-skin\" >\n\t\t\t\t \t\t\t\t \n\t\t\t<div  class=\"ms-slide\" data-delay=\"3\" data-fill-mode=\"fit\"   >\n\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.pei.it\/wp-content\/plugins\/masterslider\/public\/assets\/css\/blank.gif\" alt=\"Soffietti Circolari Cuciti\" title=\"soff-circolare\" data-src=\"https:\/\/www.pei.it\/wp-content\/uploads\/2021\/11\/soff-circolare-scaled.jpg\" \/>\n\n\n\t<img loading=\"lazy\" decoding=\"async\" class=\"ms-thumb\" src=\"https:\/\/www.pei.it\/wp-content\/uploads\/2021\/11\/soff-circolare-scaled-130x80.jpg\" alt=\"Soffietti Circolari Cuciti\" \/>\n\t\t\t\t<\/div>\n\t\t\t<div  class=\"ms-slide\" data-delay=\"3\" data-fill-mode=\"fit\"   >\n\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.pei.it\/wp-content\/plugins\/masterslider\/public\/assets\/css\/blank.gif\" alt=\"Dettaglio Cucitura Soffietti Circolari\" title=\"dettagli-cucitura\" data-src=\"https:\/\/www.pei.it\/wp-content\/uploads\/2021\/11\/dettagli-cucitura-scaled.jpg\" \/>\n\n\n\t<img loading=\"lazy\" decoding=\"async\" class=\"ms-thumb\" src=\"https:\/\/www.pei.it\/wp-content\/uploads\/2021\/11\/dettagli-cucitura-scaled-130x80.jpg\" alt=\"Dettaglio Cucitura Soffietti Circolari\" \/>\n\t\t\t\t<\/div>\n\n\t\t\t<\/div>\n\t\t\t<!-- END MasterSlider Main -->\n\n\t\t\t \n\t\t<\/div>\n\t\t<!-- END MasterSlider -->\n\n\t\t<script>\n\t\t( window.MSReady = window.MSReady || [] ).push( function( $ ) {\n\n\t\t\t\"use strict\";\n\t\t\tvar masterslider_de72 = new MasterSlider();\n\n\t\t\t\/\/ slider controls\n\t\t\tmasterslider_de72.control('arrows'     ,{ autohide:true, overVideo:true  });\n\t\t\tmasterslider_de72.control('thumblist'  ,{ autohide:false, overVideo:true, dir:'h', speed:17, inset:false, arrows:false, hover:false, customClass:'', align:'bottom',type:'thumbs', margin:5, width:130, height:80, space:7, fillMode:'fill'  });\n\t\t\t\/\/ slider setup\n\t\t\tmasterslider_de72.setup(\"MS697a3107cde72\", {\n\t\t\t\twidth           : 850,\n\t\t\t\theight          : 850,\n\t\t\t\tminHeight       : 0,\n\t\t\t\tspace           : 0,\n\t\t\t\tstart           : 1,\n\t\t\t\tgrabCursor      : true,\n\t\t\t\tswipe           : true,\n\t\t\t\tmouse           : true,\n\t\t\t\tkeyboard        : false,\n\t\t\t\tlayout          : \"boxed\",\n\t\t\t\twheel           : false,\n\t\t\t\tautoplay        : false,\n                instantStartLayers:false,\n\t\t\t\tmobileBGVideo:false,\n\t\t\t\tloop            : false,\n\t\t\t\tshuffle         : false,\n\t\t\t\tpreload         : 2,\n\t\t\t\theightLimit     : true,\n\t\t\t\tautoHeight      : false,\n\t\t\t\tsmoothHeight    : true,\n\t\t\t\tendPause        : false,\n\t\t\t\toverPause       : true,\n\t\t\t\tfillMode        : \"fill\",\n\t\t\t\tcenterControls  : true,\n\t\t\t\tstartOnAppear   : false,\n\t\t\t\tlayersMode      : \"center\",\n\t\t\t\tautofillTarget  : \"\",\n\t\t\t\thideLayers      : false,\n\t\t\t\tfullscreenMargin: 0,\n\t\t\t\tspeed           : 20,\n\t\t\t\tdir             : \"h\",\n\t\t\t\tresponsive      : true,\n\t\t\t\ttabletWidth     : 768,\n\t\t\t\ttabletHeight    : null,\n\t\t\t\tphoneWidth      : 480,\n\t\t\t\tphoneHeight    : null,\n\t\t\t\tsizingReference : window,\n\t\t\t\tparallaxMode    : 'swipe',\n\t\t\t\tview            : \"fade\"\n\t\t\t});\n\n\t\t\t\n\t\t\twindow.masterslider_instances = window.masterslider_instances || [];\n\t\t\twindow.masterslider_instances.push( masterslider_de72 );\n\t\t});\n\t\t<\/script>\n\n<\/div>[vc_empty_space height=&#8221;50px&#8221;][\/vc_column_inner][vc_column_inner width=&#8221;2\/5&#8243;][vc_empty_space height=&#8221;20px&#8221;][vc_btn title=&#8221;Contact us about this product&#8221; style=&#8221;outline-custom&#8221; outline_custom_color=&#8221;#1e73be&#8221; outline_custom_hover_background=&#8221;#e34529&#8243; outline_custom_hover_text=&#8221;#ffffff&#8221; shape=&#8221;round&#8221; link=&#8221;url:%23form|title:TMP1-Coperture%20Telescopiche|&#8221; el_class=&#8221;bottone_template&#8221;]<h4 class=\"et-heading text-align-left tablet-text-align-inherit mobile-text-align-inherit animate-false no-animation-type testo_template\" id=\"et-heading-493793\" data-delay=\"0\" data-mobile-font=\"inherit\" data-mobile-line-height=\"inherit\" data-tablet-landscape-font=\"inherit\" data-tablet-portrait-font=\"inherit\" data-tablet-landscape-line-height=\"inherit\" data-tablet-portrait-line-height=\"inherit\" data-parallax=\"false\" data-move=\"false\" data-coordinatex=\"0\" data-coordinatey=\"0\" data-speed=\"10\"><span class=\"text-wrapper\"><span class=\"text\">Round protective bellows<\/span><\/span><\/h4>[vc_column_text animation_delay=&#8221;0&#8243; css=&#8221;&#8221; el_class=&#8221;testo_template&#8221;]<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;They are used when a strong wear resistance with a very small closed parcel is required. In addition to being very reliable, the sewn circular bellows do not involve equipment costs and ensure high resistance to mechanical and dynamic stress. They are resistant to coolants and oils and have a minimum internal diameter starting from 20 mm. The sewn circular bellows are suitable for high temperatures and can be made with an external diameter of any size according to the needs. They are available with guide bushings and reinforcement rings. The sewn circular bellows are the ideal solution for those looking for optimal protection with a good quality \/ price ratio.&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:6913,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;}\">They are used where a very compact closed length is required.<\/span><\/p>\n<p><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;They are used when a strong wear resistance with a very small closed parcel is required. In addition to being very reliable, the sewn circular bellows do not involve equipment costs and ensure high resistance to mechanical and dynamic stress. They are resistant to coolants and oils and have a minimum internal diameter starting from 20 mm. The sewn circular bellows are suitable for high temperatures and can be made with an external diameter of any size according to the needs. They are available with guide bushings and reinforcement rings. The sewn circular bellows are the ideal solution for those looking for optimal protection with a good quality \/ price ratio.&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:6913,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;}\">In addition to being very reliable, the sewn round bellows do not involve equipment costs and ensure high resistance to mechanical and dynamic stress. They are resistant to coolants and oils and have a minimum internal diameter starting from 20 mm. <\/span><\/p>\n<p><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;They are used when a strong wear resistance with a very small closed parcel is required. In addition to being very reliable, the sewn circular bellows do not involve equipment costs and ensure high resistance to mechanical and dynamic stress. They are resistant to coolants and oils and have a minimum internal diameter starting from 20 mm. The sewn circular bellows are suitable for high temperatures and can be made with an external diameter of any size according to the needs. They are available with guide bushings and reinforcement rings. The sewn circular bellows are the ideal solution for those looking for optimal protection with a good quality \/ price ratio.&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:6913,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;}\">The sewn round bellows are suitable for high temperatures and can be made with an external diameter of any size according to the needs. They are available with guide bushings and reinforcement rings. <\/span><\/p>\n<p><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;They are used when a strong wear resistance with a very small closed parcel is required. In addition to being very reliable, the sewn circular bellows do not involve equipment costs and ensure high resistance to mechanical and dynamic stress. They are resistant to coolants and oils and have a minimum internal diameter starting from 20 mm. The sewn circular bellows are suitable for high temperatures and can be made with an external diameter of any size according to the needs. They are available with guide bushings and reinforcement rings. The sewn circular bellows are the ideal solution for those looking for optimal protection with a good quality \/ price ratio.&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:6913,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;}\">The sewn round bellows are the ideal solution for those looking for optimal protection with a good quality \/ price ratio.<\/span>[\/vc_column_text][vc_empty_space height=&#8221;50px&#8221;][\/vc_column_inner][\/vc_row_inner][vc_separator color=&#8221;sky&#8221;][\/vc_column][\/vc_row][vc_row element_id=&#8221;840365&#8243; css=&#8221;.vc_custom_1635159784796{padding-top: 50px !important;}&#8221;][vc_column animation_delay=&#8221;0&#8243; element_id=&#8221;165733&#8243; crp=&#8221;480:i:i,480-768:i:i,768-1024:i:i,1024-1280:i:i,1280-1366:i:i,1366-1600:i:i,1600-1920:i:i&#8221; el_class=&#8221;colonna_tab_template&#8221;]<div class=\"et-tab-wrapper\"><div id=\"et-tab-1\" class=\"et-tab et-clearfix center-false horizontal\"><div data-target=\"tab-data\" class=\"active tab et-clearfix\"><h6 class=\"tab-title-tag\">Data<\/h6><\/div> <div id=\"tab-data-1\" class=\"tab-content et-clearfix\">[vc_row_inner element_id=&#8221;839507&#8243;][vc_column_inner width=&#8221;1\/2&#8243;]<h4 class=\"et-heading text-align-left tablet-text-align-inherit mobile-text-align-inherit animate-false no-animation-type testo_template\" id=\"et-heading-84578\" data-delay=\"0\" data-mobile-font=\"inherit\" data-mobile-line-height=\"inherit\" data-tablet-landscape-font=\"inherit\" data-tablet-portrait-font=\"inherit\" data-tablet-landscape-line-height=\"inherit\" data-tablet-portrait-line-height=\"inherit\" data-parallax=\"false\" data-move=\"false\" data-coordinatex=\"0\" data-coordinatey=\"0\" data-speed=\"10\"><span class=\"text-wrapper\"><span class=\"text\">Type A fixing schemes<\/span><\/span><\/h4>[vc_single_image image=&#8221;61779&#8243; img_size=&#8221;full&#8221; css=&#8221;&#8221; el_class=&#8221;immagine_template&#8221;][\/vc_column_inner][vc_column_inner width=&#8221;1\/2&#8243;][vc_column_text animation_delay=&#8221;0&#8243; css=&#8221;.vc_custom_1765362286167{padding-top: 50px !important;}&#8221; el_class=&#8221;testo_template&#8221;]<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Bellows with type A fastening system have a collar and a flange&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:6913,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;}\">Bellows with <strong>type A<\/strong> fastening system have a collar and a flange<\/span><\/p>\n<p><b><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Bellows data:&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\">Bellows data:<\/span><\/b><\/p>\n<p><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;\u00d8 and. suff. = Circular bellows outer diameter&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>\u00d8 ext. (OD)<\/strong> = Round bellow outer diameter<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;\u00d8 i.c. = Internal collar diameter&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>\u00d8 int. c.<\/strong> = Internal collar diameter<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;\u00d8 i. soff. = Internal bellows diameter&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>\u00d8 int. (ID)<\/strong> = Internal bellow diameter<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;\u00d8 i.f. = Internal flange diameter&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>\u00d8 int.f.<\/strong> = Internal flange diameter<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;\u00d8 int. holes = Flange hole centre-to-centre diameter&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>\u00d8 int. hole<\/strong>\u00a0= Flange hole centre-to-centre diameter<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;\u00d8 e. f = Flange outer diameter&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>\u00d8 ext. f<\/strong> = Flange outer diameter<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;P.A. = Open parcel&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>P.A.<\/strong> = Open length<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;P.C. = Closed parcel&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>P.C.<\/strong> = Closed length<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Corsa = P.A. \u2013 P.C.&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><b>Stroke <\/b>= P.A. \u2013 P.C.<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;AP = Step open&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>AP<\/strong> = Opening of 1 fold<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;X = Fold height&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>X<\/strong> = Fold height<\/span>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_separator css=&#8221;.vc_custom_1635407629712{padding-top: 50px !important;padding-bottom: 50px !important;}&#8221;][vc_row_inner element_id=&#8221;839507&#8243;][vc_column_inner width=&#8221;1\/2&#8243;]<h4 class=\"et-heading text-align-left tablet-text-align-inherit mobile-text-align-inherit animate-false no-animation-type testo_template\" id=\"et-heading-926247\" data-delay=\"0\" data-mobile-font=\"inherit\" data-mobile-line-height=\"inherit\" data-tablet-landscape-font=\"inherit\" data-tablet-portrait-font=\"inherit\" data-tablet-landscape-line-height=\"inherit\" data-tablet-portrait-line-height=\"inherit\" data-parallax=\"false\" data-move=\"false\" data-coordinatex=\"0\" data-coordinatey=\"0\" data-speed=\"10\"><span class=\"text-wrapper\"><span class=\"text\">Type B fixing schemes<\/span><\/span><\/h4>[vc_single_image image=&#8221;61835&#8243; img_size=&#8221;full&#8221; css=&#8221;&#8221; el_class=&#8221;immagine_template&#8221;][\/vc_column_inner][vc_column_inner width=&#8221;1\/2&#8243;][vc_column_text animation_delay=&#8221;0&#8243; css=&#8221;.vc_custom_1765362306710{padding-top: 50px !important;}&#8221; el_class=&#8221;testo_template&#8221;]<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Bellows with type B fastening system have two collars&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:6913,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;}\">Bellows with <strong>type B<\/strong> fastening system have two collars<\/span><\/p>\n<p><b><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Bellows data:&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\">Bellows data:<\/span><\/b><\/p>\n<p><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;\u00d8 e. soff. = Circular bellows outer diameter&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>\u00d8 ext. (OD)<\/strong> = Round bellow outer diameter<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;\u00d8 i.c. = Internal collar diameter&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>\u00d8 int. c.<\/strong> = Internal collar diameter<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;\u00d8 i. soff. = Bellows internal diameter&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>\u00d8 int. (ID)<\/strong> = Bellow internal diameter<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;P.A. = Open parcel&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>P.A.<\/strong> = Open length<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;P.C. = Closed parcel&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>P.C.<\/strong> = Closed length<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Corsa = P.A. \u2013 P.C.&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><b>Stroke <\/b>= P.A. \u2013 P.C.<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;AP = Step open&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>AP<\/strong> = Opening of 1 fold<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;X = Fold height&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>X<\/strong> = Fold height<\/span>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_separator css=&#8221;.vc_custom_1635407629712{padding-top: 50px !important;padding-bottom: 50px !important;}&#8221;][vc_row_inner element_id=&#8221;839507&#8243;][vc_column_inner width=&#8221;1\/2&#8243;]<h4 class=\"et-heading text-align-left tablet-text-align-inherit mobile-text-align-inherit animate-false no-animation-type testo_template\" id=\"et-heading-76392\" data-delay=\"0\" data-mobile-font=\"inherit\" data-mobile-line-height=\"inherit\" data-tablet-landscape-font=\"inherit\" data-tablet-portrait-font=\"inherit\" data-tablet-landscape-line-height=\"inherit\" data-tablet-portrait-line-height=\"inherit\" data-parallax=\"false\" data-move=\"false\" data-coordinatex=\"0\" data-coordinatey=\"0\" data-speed=\"10\"><span class=\"text-wrapper\"><span class=\"text\">Type C fixing schemes<\/span><\/span><\/h4>[vc_single_image image=&#8221;61891&#8243; img_size=&#8221;full&#8221; css=&#8221;&#8221; el_class=&#8221;immagine_template&#8221;][\/vc_column_inner][vc_column_inner width=&#8221;1\/2&#8243;][vc_column_text animation_delay=&#8221;0&#8243; css=&#8221;.vc_custom_1765362324302{padding-top: 50px !important;}&#8221; el_class=&#8221;testo_template&#8221;]<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Bellows with the type C fastening system have two flanges&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:6913,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;}\">Bellows with the <strong>type C<\/strong> fastening system have two flanges<\/span><\/p>\n<p><b><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Bellows data:&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\">Bellows data:<\/span><\/b><\/p>\n<p><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;\u00d8 e. soff. = Circular bellows outer diameter&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>\u00d8 Ext. (OD)<\/strong> = Round bellow outer diameter<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;\u00d8 i. soff. = Bellows internal diameter&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>\u00d8 Int. (ID)<\/strong> = Bellow internal diameter<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;\u00d8 i.f. = Internal flange diameter&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>\u00d8 Int. f. <\/strong>= Internal flange diameter<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;\u00d8 int. holes = Internal flange diameter&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>\u00d8 int. hole<\/strong>\u00a0= Internal flange diameter<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;\u00d8 e. f = External flange diameter&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>\u00d8 Ext. f<\/strong> = External flange diameter<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;P.A. = Open parcel&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>P.A.<\/strong> = Open length<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;P.C. = Closed parcel&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>P.C.<\/strong> = Closed length<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Corsa = P.A. \u2013 P.C.&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><b>Stroke <\/b>= P.A. \u2013 P.C.<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;AP = Open step&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>AP<\/strong> = Opening of 1 fold<\/span><br \/>\n<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;X = Fold height&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23297,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>X<\/strong> = Fold height<\/span>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_separator css=&#8221;.vc_custom_1635407629712{padding-top: 50px !important;padding-bottom: 50px !important;}&#8221;]<\/div><div data-target=\"tab-standard-materials\" class=\"active tab et-clearfix\"><h6 class=\"tab-title-tag\">Standard Materials<\/h6><\/div> <div id=\"tab-standard-materials-2\" class=\"tab-content et-clearfix\">[vc_row_inner element_id=&#8221;839507&#8243;][vc_column_inner]<h4 class=\"et-heading text-align-left tablet-text-align-inherit mobile-text-align-inherit animate-false no-animation-type testo_template\" id=\"et-heading-329346\" data-delay=\"0\" data-mobile-font=\"inherit\" data-mobile-line-height=\"inherit\" data-tablet-landscape-font=\"inherit\" data-tablet-portrait-font=\"inherit\" data-tablet-landscape-line-height=\"inherit\" data-tablet-portrait-line-height=\"inherit\" data-parallax=\"false\" data-move=\"false\" data-coordinatex=\"0\" data-coordinatey=\"0\" data-speed=\"10\"><span class=\"text-wrapper\"><span class=\"text\">Materials available for the sewn round bellows<\/span><\/span><\/h4>[vc_column_text animation_delay=&#8221;0&#8243; css=&#8221;.vc_custom_1776345244599{padding-top: 50px !important;}&#8221; el_class=&#8221;testo_template&#8221;]\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Code PEI TEMAT002: Polyester coated with Neoprene * and Hypalon *&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23361,&quot;3&quot;:{&quot;1&quot;:0},&quot;9&quot;:0,&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\">Polyester coated with\u00a0Neoprene<\/span>* (thickness from 0,3 to 1,2)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Code PEI TEMAT002: Polyester coated with Neoprene * and Hypalon *&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23361,&quot;3&quot;:{&quot;1&quot;:0},&quot;9&quot;:0,&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\">Polyester coated with<\/span> PVC (thickness from 0,3 to 0,7)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Code PEI TEMAT169: Kevlar* coated with Polyurethane&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23361,&quot;3&quot;:{&quot;1&quot;:0},&quot;9&quot;:0,&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>Code <\/strong><\/span>PEI TEMAT007<\/b><span style=\"font-weight: 400;\">: Kevlar* <span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Code PEI TEMAT007:Kevlar * coated with Neoprene * and Hypalon *&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23361,&quot;3&quot;:{&quot;1&quot;:0},&quot;9&quot;:0,&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\">coated with<\/span> Neoprene* and Hypalon*<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Code PEI TEMAT169: Kevlar* coated with Polyurethane&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23361,&quot;3&quot;:{&quot;1&quot;:0},&quot;9&quot;:0,&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>Code <\/strong><\/span>PEI TEMAT164-TEMAT165<\/b><span style=\"font-weight: 400;\">: Kevlar*\/Nomex* <span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Code PEI TEMAT169: Kevlar* coated with Polyurethane&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23361,&quot;3&quot;:{&quot;1&quot;:0},&quot;9&quot;:0,&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\">coated with Polyurethane<\/span><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Code PEI TEMAT169: Kevlar* coated with Polyurethane&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23361,&quot;3&quot;:{&quot;1&quot;:0},&quot;9&quot;:0,&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>Code <\/strong><\/span>PEI TEMAT009<\/b><span style=\"font-weight: 400;\">: <span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Code PEI TEMAT009: Glass fibre coated with Silicone and Neoprene *&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23361,&quot;3&quot;:{&quot;1&quot;:0},&quot;9&quot;:0,&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\">Glass fibre coated with Silicone and Neoprene*<\/span><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Code PEI TEMAT169: Kevlar* coated with Polyurethane&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23361,&quot;3&quot;:{&quot;1&quot;:0},&quot;9&quot;:0,&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\"><strong>Code <\/strong><\/span>PEI TEMAT011<\/b><span style=\"font-weight: 400;\">: Aluminized <span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Code PEI TEMAT011: Aluminiumised fabric&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23361,&quot;3&quot;:{&quot;1&quot;:0},&quot;9&quot;:0,&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\">fabric<\/span><\/span><\/li>\n<li><b>Code PEI TEMAT081<\/b><span style=\"font-weight: 400;\">: <span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Code PEI TEMAT002: Polyester coated with Neoprene * and Hypalon *&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:23361,&quot;3&quot;:{&quot;1&quot;:0},&quot;9&quot;:0,&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;17&quot;:1}\">Polyester coated with<\/span> PVC thickness 0,5 &#8211; WHITE<\/span><\/li>\n<\/ul>\n<p><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;* Neoprene, Hypalon and Kevlar are Dupont registered trademarks.&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:6913,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;}\">* Neoprene, Hypalon and Kevlar are Dupont registered trademarks.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Further materials are available on request: consult our technical department.&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:277249,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:353217},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;16&quot;:11,&quot;21&quot;:1}\" data-sheets-hyperlink=\"https:\/\/www.pei.it\/it\/contatti\/\"><strong>Further materials are available on request: consult our<\/strong>\u00a0<a class=\"in-cell-link\" href=\"https:\/\/www.pei.it\/en\/contact-us\/\" target=\"_blank\" rel=\"noopener\">technical department<\/a>.<\/span>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_separator css=&#8221;.vc_custom_1635407629712{padding-top: 50px !important;padding-bottom: 50px !important;}&#8221;]<\/div><div data-target=\"tab-formula\" class=\"false tab et-clearfix\"><h6 class=\"tab-title-tag\">Formula<\/h6><\/div> <div id=\"tab-formula-3\" class=\"tab-content et-clearfix\">[vc_row_inner][vc_column_inner width=&#8221;1\/2&#8243;]<h4 class=\"et-heading text-align-left tablet-text-align-inherit mobile-text-align-inherit animate-false no-animation-type testo_template\" id=\"et-heading-748420\" data-delay=\"0\" data-mobile-font=\"inherit\" data-mobile-line-height=\"inherit\" data-tablet-landscape-font=\"inherit\" data-tablet-portrait-font=\"inherit\" data-tablet-landscape-line-height=\"inherit\" data-tablet-portrait-line-height=\"inherit\" data-parallax=\"false\" data-move=\"false\" data-coordinatex=\"0\" data-coordinatey=\"0\" data-speed=\"10\"><span class=\"text-wrapper\"><span class=\"text\">Formula<\/span><\/span><\/h4>[vc_single_image image=&#8221;60745&#8243; img_size=&#8221;full&#8221; css=&#8221;&#8221; el_class=&#8221;immagine_template&#8221;][\/vc_column_inner][vc_column_inner width=&#8221;1\/2&#8243;][vc_column_text animation_delay=&#8221;0&#8243; css=&#8221;.vc_custom_1759395338584{padding-top: 50px !important;}&#8221; el_class=&#8221;testo_template&#8221;]<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Formulas for calculating the closed parcel&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:6913,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:6381921},&quot;15&quot;:&quot;Calibri, sans-serif&quot;}\">Formula for calculating the closed length<\/span><\/p>\n<p><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;See the list of materials&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:277249,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:353217},&quot;15&quot;:&quot;Calibri, sans-serif&quot;,&quot;16&quot;:11,&quot;21&quot;:1}\" data-sheets-hyperlink=\"https:\/\/www.pei.it\/wp-content\/uploads\/2013\/03\/Lista_Materiali_It.pdf\"><a class=\"in-cell-link\" href=\"https:\/\/www.pei.it\/wp-content\/uploads\/2021\/11\/Material_List_Table_2023.pdf\" target=\"_blank\" rel=\"noopener\">See the materials list<\/a><\/span>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_separator css=&#8221;.vc_custom_1635407731368{padding-top: 50px !important;padding-bottom: 50px !important;}&#8221;]<\/div><div data-target=\"tab-documentation\" class=\"false tab et-clearfix\"><h6 class=\"tab-title-tag\">Documentation<\/h6><\/div> <div id=\"tab-documentation-4\" class=\"tab-content et-clearfix\">[vc_row_inner][vc_column_inner width=&#8221;1\/2&#8243;]<h4 class=\"et-heading text-align-left tablet-text-align-inherit mobile-text-align-inherit animate-false no-animation-type testo_template\" id=\"et-heading-784980\" data-delay=\"0\" data-mobile-font=\"inherit\" data-mobile-line-height=\"inherit\" data-tablet-landscape-font=\"inherit\" data-tablet-portrait-font=\"inherit\" data-tablet-landscape-line-height=\"inherit\" data-tablet-portrait-line-height=\"inherit\" data-parallax=\"false\" data-move=\"false\" data-coordinatex=\"0\" data-coordinatey=\"0\" data-speed=\"10\"><span class=\"text-wrapper\"><span class=\"text\">Documentation<\/span><\/span><\/h4>[vc_single_image image=&#8221;52720&#8243; img_size=&#8221;full&#8221; el_class=&#8221;immagine_template&#8221;][\/vc_column_inner][vc_column_inner width=&#8221;1\/2&#8243;][vc_column_text animation_delay=&#8221;0&#8243; css=&#8221;.vc_custom_1764343885014{padding-top: 50px !important;}&#8221; el_class=&#8221;testo_template&#8221;]<strong><a class=\"in-cell-link\" href=\"https:\/\/www.pei.it\/wp-content\/uploads\/2021\/11\/Round_Bellows_2025.pdf\" target=\"_blank\" rel=\"noopener\">Questionnaire for round bellows<\/a><\/strong>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_separator css=&#8221;.vc_custom_1635407750008{padding-top: 50px !important;padding-bottom: 50px !important;}&#8221;]<\/div><\/div><\/div>[\/vc_column][\/vc_row]\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_row_inner element_id=&#8221;595341&#8243;][vc_column_inner width=&#8221;3\/5&#8243;][vc_empty_space height=&#8221;50px&#8221;][\/vc_column_inner][vc_column_inner width=&#8221;2\/5&#8243;][vc_empty_space height=&#8221;20px&#8221;][vc_btn title=&#8221;Contact us about this product&#8221; style=&#8221;outline-custom&#8221; outline_custom_color=&#8221;#1e73be&#8221; outline_custom_hover_background=&#8221;#e34529&#8243; outline_custom_hover_text=&#8221;#ffffff&#8221; shape=&#8221;round&#8221; link=&#8221;url:%23form|title:TMP1-Coperture%20Telescopiche|&#8221; el_class=&#8221;bottone_template&#8221;][vc_column_text animation_delay=&#8221;0&#8243; css=&#8221;&#8221; el_class=&#8221;testo_template&#8221;]They are used where a very compact closed length is required. In addition to being very reliable, the sewn round bellows do not involve equipment costs and ensure high resistance to mechanical and dynamic stress. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[390,634],"tags":[],"class_list":["post-38075","post","type-post","status-publish","format-standard","hentry","category-products","category-soffietti-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Sewn round bellows - PEI<\/title>\n<meta name=\"description\" content=\"The sewn bellows of PEI are used where a very compact closed length is required.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.pei.it\/en\/products\/circular-protective-bellows-stitched\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sewn round bellows - 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