{"id":1170,"date":"2026-09-29T12:39:04","date_gmt":"2026-09-29T04:39:04","guid":{"rendered":"https:\/\/cnsinometal.com\/?p=1170"},"modified":"2026-09-29T12:39:05","modified_gmt":"2026-09-29T04:39:05","slug":"what-is-the-typical-coating-thickness-for-color-coated-galvanized-steel-coils","status":"publish","type":"post","link":"https:\/\/cnsinometal.com\/fr\/2026\/09\/29\/what-is-the-typical-coating-thickness-for-color-coated-galvanized-steel-coils\/","title":{"rendered":"Quelle est l'\u00e9paisseur de rev\u00eatement habituelle des bobines d'acier galvanis\u00e9 pr\u00e9laqu\u00e9 ?"},"content":{"rendered":"

Conventional building use (2\/1 structure: front double coating, back single coating, the most mainstream in the market)
-Front total coating (primer+topcoat): \u2265 20 \u03bc m (minimum requirement of national standard), market standard polyester PE: 20-25 \u03bc m
-Primer: about 5 \u03bc m
-Topcoat: 15-20 \u03bc m
-Back coating (back paint): 5-8 \u03bc m (single coating, mainly rust proof, not weather resistant)
Common film thickness for different paint systems<\/p>\n\n\n\n

    \n
  1. Ordinary polyester PE: front 20-25 \u03bc m, universal for roof and wall surfaces<\/li>\n\n\n\n
  2. High weather resistant polyester HDP\/silicon modified polyester SMP: front 25-30 \u03bc m, better outdoor weather resistance<\/li>\n\n\n\n
  3. Fluorocarbon PVDF (three coatings and two baking): front side 30-40 \u03bc m, highly corrosive coastal\/chemical environment, long warranty period<\/li>\n\n\n\n
  4. Thickened special version: 40-60 \u03bc m, customized for heavy-duty anti-corrosion
    Classification of back coating
    -2\/1: Back paint 5 \u03bc m (economical type)
    -2\/1M: Back paint 8 \u03bc m (back is moisture resistant, commonly used for sandwich panels)
    -2\/2: Double coated on both sides, 12-20 \u03bc m on the back, with exposed components on both sides
    Key points of national standard
    The average total thickness of the front coating is \u2265 20 \u03bc m; A single measuring point cannot be lower than 90% of the nominal minimum value; Less than 20 \u03bc m requires mutual agreement and confirmation between the ordering parties.<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"

    Utilisation classique dans le b\u00e2timent (structure 2\/1 : double couche \u00e0 l'avant, simple couche \u00e0 l'arri\u00e8re, la plus r\u00e9pandue sur le march\u00e9) \u2013 Couche totale \u00e0 l'avant (appr\u00eat + couche de finition) : \u2265 20 \u03bcm (exigence minimale de la norme nationale), polyester PE standard du march\u00e9 : 20-25 \u03bcm \u2013 Appr\u00eat : environ 5 \u03bcm \u2013 Couche de finition : 15-20 \u03bcm \u2013 Rev\u00eatement arri\u00e8re (peinture arri\u00e8re) : 5-8 \u03bcm (couche unique, principalement destin\u00e9e \u00e0 la protection contre la rouille, non\u2026<\/p>","protected":false},"author":1,"featured_media":918,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[35],"tags":[],"class_list":["post-1170","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/cnsinometal.com\/fr\/wp-json\/wp\/v2\/posts\/1170","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cnsinometal.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cnsinometal.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cnsinometal.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cnsinometal.com\/fr\/wp-json\/wp\/v2\/comments?post=1170"}],"version-history":[{"count":1,"href":"https:\/\/cnsinometal.com\/fr\/wp-json\/wp\/v2\/posts\/1170\/revisions"}],"predecessor-version":[{"id":1171,"href":"https:\/\/cnsinometal.com\/fr\/wp-json\/wp\/v2\/posts\/1170\/revisions\/1171"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cnsinometal.com\/fr\/wp-json\/wp\/v2\/media\/918"}],"wp:attachment":[{"href":"https:\/\/cnsinometal.com\/fr\/wp-json\/wp\/v2\/media?parent=1170"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cnsinometal.com\/fr\/wp-json\/wp\/v2\/categories?post=1170"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cnsinometal.com\/fr\/wp-json\/wp\/v2\/tags?post=1170"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}