{"version":"1.0","provider_name":"API\u306e\u92fc\u9244\u6cb9\u7530\u306e\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u3001\u5305\u88c5\u306e\u7ba1\u3001OCTG\u88fd\u9020\u696d\u8005\u304a\u3088\u3073\u88fd\u9020\u8005","provider_url":"https:\/\/www.wldsteel.com\/ja","author_name":"WLDSTEEL","author_url":"https:\/\/www.wldsteel.com\/ja\/author\/admin\/","title":"Professional Testing Methods for Plastic-Coated Steel Pipe - API steel oilfield pipeline, casing pipe, OCTG manufacturer and supplier","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\"><a href=\"https:\/\/www.wldsteel.com\/ja\/professional-testing-methods-for-plastic-coated-steel-pipe\/\">Professional Testing Methods for Plastic-Coated Steel Pipe<\/a><\/blockquote>\n<script type='text\/javascript'>\n<!--\/\/--><![CDATA[\/\/><!--\n\t\t\/*! This file is auto-generated *\/\n\t\t!function(d,l){\"use strict\";var e=!1,n=!1;if(l.querySelector)if(d.addEventListener)e=!0;if(d.wp=d.wp||{},!d.wp.receiveEmbedMessage)if(d.wp.receiveEmbedMessage=function(e){var t=e.data;if(t)if(t.secret||t.message||t.value)if(!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var r,i,a,s=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),n=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),o=new RegExp(\"^https?:$\",\"i\"),c=0;c<n.length;c++)n[c].style.display=\"none\";for(c=0;c<s.length;c++)if(r=s[c],e.source===r.contentWindow){if(r.removeAttribute(\"style\"),\"height\"===t.message){if(1e3<(a=parseInt(t.value,10)))a=1e3;else if(~~a<200)a=200;r.height=a}if(\"link\"===t.message)if(i=l.createElement(\"a\"),a=l.createElement(\"a\"),i.href=r.getAttribute(\"src\"),a.href=t.value,o.test(a.protocol))if(a.host===i.host)if(l.activeElement===r)d.top.location.href=t.value}}},e)d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",t,!1),d.addEventListener(\"load\",t,!1);function t(){if(!n){n=!0;for(var e,t,r=-1!==navigator.appVersion.indexOf(\"MSIE 10\"),i=!!navigator.userAgent.match(\/Trident.*rv:11\\.\/),a=l.querySelectorAll(\"iframe.wp-embedded-content\"),s=0;s<a.length;s++){if(!(e=a[s]).getAttribute(\"data-secret\"))t=Math.random().toString(36).substr(2,10),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t);if(r||i)(t=e.cloneNode(!0)).removeAttribute(\"security\"),e.parentNode.replaceChild(t,e)}}}}(window,document);\n\/\/--><!]]>\n<\/script><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.wldsteel.com\/ja\/professional-testing-methods-for-plastic-coated-steel-pipe\/embed\/\" width=\"600\" height=\"338\" title=\"&#8220;Professional Testing Methods for Plastic-Coated Steel Pipe&#8221; &#8212; API steel oilfield pipeline, casing pipe, OCTG manufacturer and supplier\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe>","description":"Plastic-coated steel pipes feature metal substrates compounded with thermosetting or thermoplastic anticorrosive coatings. Their testing system falls into three major categories: incoming raw material re-inspection, offline type inspection of finished products, and non-destructive on-site installation testing. All tests focus on four core indicators: mechanical properties of substrates, coating bonding stability, anti-corrosion sealing performance and service adaptability, and all judgments are formulated based on practical industrial operation logic rather than generalized online template expressions. Basic Performance Testing of Steel Pipe Substrates The substrate serves as the load-bearing core of plastic-coated pipes. Partial coating stripping is conducted prior to testing. A digital ultrasonic thickness gauge is adopted to measure wall thickness, with [&hellip;]","thumbnail_url":"https:\/\/www.wldsteel.com\/wp-content\/uploads\/2026\/07\/Plastic-coated-Steel-Pipe.png"}