{"id":38067,"date":"2021-12-23T15:54:22","date_gmt":"2021-12-23T15:54:22","guid":{"rendered":"https:\/\/www.pei.it\/cz-roletove-kryty-standard\/protezioni-a-soffietto-circolari-deformati-e-apribili\/"},"modified":"2025-12-10T10:31:16","modified_gmt":"2025-12-10T10:31:16","slug":"deformed-and-openable-circular-bellows-protective","status":"publish","type":"post","link":"https:\/\/www.pei.it\/en\/products\/deformed-and-openable-circular-bellows-protective\/","title":{"rendered":"Heat-formed and openable round bellows protectors"},"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_MS697924167fac7\" class=\"master-slider-parent ms-thumbs-template ms-parent-id-40\" style=\"max-width:820px;\" >\n\n\t\t\t\n\t\t\t<!-- MasterSlider Main -->\n\t\t\t<div id=\"MS697924167fac7\" 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=\"fill\"   >\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=\"\" title=\"soff_def_apr_chiuso\" data-src=\"https:\/\/www.pei.it\/wp-content\/uploads\/2021\/07\/soff_def_apr_chiuso.png\" \/>\n\n\n\t<img loading=\"lazy\" decoding=\"async\" class=\"ms-thumb\" src=\"https:\/\/www.pei.it\/wp-content\/uploads\/2021\/07\/soff_def_apr_chiuso-130x80.png\" alt=\"\" \/>\n\t\t\t\t<\/div>\n\t\t\t<div  class=\"ms-slide\" data-delay=\"3\" data-fill-mode=\"fill\"   >\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=\"\" title=\"soff_def_apr_aperto\" data-src=\"https:\/\/www.pei.it\/wp-content\/uploads\/2021\/11\/soff_def_apr_aperto.png\" \/>\n\n\n\t<img loading=\"lazy\" decoding=\"async\" class=\"ms-thumb\" src=\"https:\/\/www.pei.it\/wp-content\/uploads\/2021\/11\/soff_def_apr_aperto-130x80.png\" alt=\"\" \/>\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_fac7 = new MasterSlider();\n\n\t\t\t\/\/ slider controls\n\t\t\tmasterslider_fac7.control('arrows'     ,{ autohide:true, overVideo:true  });\n\t\t\tmasterslider_fac7.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_fac7.setup(\"MS697924167fac7\", {\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_fac7 );\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 for 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-245884\" 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\">Heat-formed and openable round bellows<\/span><\/span><\/h4>[vc_column_text animation_delay=&#8221;0&#8243; el_class=&#8221;testo_template&#8221;]These are used when high mechanical strength and heat resistance are required.<\/p>\n<p>They are characterised by excellent resistance to mechanical stress as well as to coolants and oils. They are also available in cone-shaped according to the needs.<br \/>\nThey do not involve any cost of equipment and have an excellent quality \/ price ratio.<br \/>\nOn request, the heat-formed and openable round bellows are available with guide bushings and reinforcement rings.[\/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-openable\" class=\"false tab et-clearfix\"><h6 class=\"tab-title-tag\">Openable<\/h6><\/div> <div id=\"tab-openable-1\" 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-402655\" 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\">Deformed and openable bellows<\/span><\/span><\/h4>[vc_single_image image=&#8221;50094&#8243; img_size=&#8221;large&#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_1680859307687{padding-top: 50px !important;}&#8221; el_class=&#8221;testo_template&#8221;]<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;On request, the deformed bellows are available with longitudinal opening, suitable for cases where it is necessary to mount the bellows without having to disassemble the organ to be protected.&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;}\">On request, the heat-formed bellows are available with longitudinal opening, suitable for cases where it is necessary to mount the bellows without having to disassemble the organ to be protected.<\/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-data\" class=\"active tab et-clearfix\"><h6 class=\"tab-title-tag\">Data<\/h6><\/div> <div id=\"tab-data-2\" 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-403280\" 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;62255&#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_1765362596634{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-652874\" 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;62311&#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_1765362616041{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-553246\" 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;62367&#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_1765362634663{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-3\" 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-819204\" 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<\/span><\/span><\/h4>[vc_column_text animation_delay=&#8221;0&#8243; css=&#8221;.vc_custom_1761809475980{padding-top: 50px !important;}&#8221; el_class=&#8221;testo_template&#8221;]\n<ul>\n<li><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Polyester coated with Neoprene * and Hypalon * code PEI TEMAT002&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:6977,&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;}\">Polyester coated with Neoprene * = code PEI <strong>TEMAT202<\/strong><\/span><\/li>\n<li><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Polyester coated with PVC code PEI TEMAT081&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:6977,&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;}\">Polyester coated with PVC (WHITE) = code PEI <strong>TEMAT081<\/strong><\/span><\/li>\n<li><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Polyester coated with PVC = TEMAT 019-TEMAT018-TEMAT017&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:6977,&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;}\">Polyester coated with PVC = code PEI<strong> TEMAT019<\/strong> &#8211; <strong>TEMAT018<\/strong>\u00a0<\/span><\/li>\n<li><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Fibreglass coated with Silicone and Neoprene * Cod. PEI TEM094&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:6977,&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;}\">Fibreglass coated with Silicone and Neoprene * = code PEI<strong> TEMAT094<\/strong><\/span><\/li>\n<\/ul>\n<p><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;* Neoprene and Hypalon are Dupon 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 is a Dupont registered trademark.<\/span><\/p>\n<p><strong>Further materials are available on request: consult our <a class=\"in-cell-link\" href=\"https:\/\/www.pei.it\/en\/contact-us\/\" target=\"_blank\" rel=\"noopener\">technical department<\/a>.<\/strong>[\/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-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-942446\" 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 for calculating the CLOSED LENGTH<\/span><\/span><\/h4>[vc_single_image image=&#8221;60756&#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_1765362672945{padding-top: 50px !important;}&#8221; el_class=&#8221;testo_template&#8221;]<span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Circular deformed protective bellows: Formula for the calculation of the 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>Round heat-formed protective bellows:<\/strong> Formula for the calculation of the closed length<\/span><\/p>\n<p><strong><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><\/strong>[\/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-5\" 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-10844\" 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_1764343978398{padding-top: 50px !important;}&#8221; el_class=&#8221;testo_template&#8221;]<strong><a 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 for 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; el_class=&#8221;testo_template&#8221;]These are used when high mechanical strength and heat resistance are required. They are characterised by excellent resistance to mechanical stress as well as to coolants and oils. They are also available in cone-shaped according to [&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-38067","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>Heat-formed and openable round bellows protectors - PEI<\/title>\n<meta name=\"description\" content=\"Heat-formed and openable round bellows: used when high mechanical strength and heat resistance are 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\/deformed-and-openable-circular-bellows-protective\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Heat-formed and openable round bellows protectors - 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