{"id":71,"date":"2026-01-06T11:15:45","date_gmt":"2026-01-06T03:15:45","guid":{"rendered":"http:\/\/jingyi.global-jt.com\/?page_id=71"},"modified":"2026-03-12T10:23:39","modified_gmt":"2026-03-12T02:23:39","slug":"technical-quality","status":"publish","type":"page","link":"https:\/\/jingyifastener.com\/en\/technical-quality\/","title":{"rendered":"Technical &#038; Quality"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"71\" class=\"elementor elementor-71\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-97e6906 e-con-full e-flex e-con e-parent\" data-id=\"97e6906\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-609c889 e-con-full Page-Banner e-flex e-con e-child\" data-id=\"609c889\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ec7c2a3 elementor-widget__width-inherit Page-Banner-img elementor-widget elementor-widget-image\" data-id=\"ec7c2a3\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"626\" height=\"265\" src=\"https:\/\/jingyifastener.com\/wp-content\/uploads\/2026\/01\/\u672a\u6807\u9898-1.jpg\" class=\"attachment-full size-full wp-image-1640\" alt=\"\" srcset=\"https:\/\/jingyifastener.com\/wp-content\/uploads\/2026\/01\/\u672a\u6807\u9898-1.jpg 626w, https:\/\/jingyifastener.com\/wp-content\/uploads\/2026\/01\/\u672a\u6807\u9898-1-300x127.jpg 300w, https:\/\/jingyifastener.com\/wp-content\/uploads\/2026\/01\/\u672a\u6807\u9898-1-150x63.jpg 150w, https:\/\/jingyifastener.com\/wp-content\/uploads\/2026\/01\/\u672a\u6807\u9898-1-18x8.jpg 18w, https:\/\/jingyifastener.com\/wp-content\/uploads\/2026\/01\/\u672a\u6807\u9898-1-600x254.jpg 600w\" sizes=\"(max-width: 626px) 100vw, 626px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2a96494 e-flex e-con-boxed e-con e-child\" data-id=\"2a96494\" data-element_type=\"container\" data-settings=\"{&quot;position&quot;:&quot;absolute&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-98d6ecb elementor-widget elementor-widget-heading\" data-id=\"98d6ecb\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Technical &amp; Quality<\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-578e1dc e-con-full e-flex e-con e-child\" data-id=\"578e1dc\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7f67eb6 elementor-widget elementor-widget-woocommerce-breadcrumb\" data-id=\"7f67eb6\" data-element_type=\"widget\" data-widget_type=\"woocommerce-breadcrumb.default\">\n\t\t\t\t\t<nav class=\"woocommerce-breadcrumb\" aria-label=\"Breadcrumb\">Home<\/nav>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-745de71 Tq e-flex e-con-boxed e-con e-parent\" data-id=\"745de71\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9ff014c elementor-widget elementor-widget-heading\" data-id=\"9ff014c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">Technical Capability<\/span>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6d95a67 elementor-widget elementor-widget-text-editor\" data-id=\"6d95a67\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div>Lishui Jingyi Valve Co., Ltd. focuses on the fastener sector for the oil and gas industry. With three core technical strengths\u2014<strong>precision material selection, professional process control, and comprehensive testing &amp; verification<\/strong>\u2014we deliver reliable product solutions for harsh working conditions such as high pressure, heavy corrosion, and H\u2082S-containing environments.<\/div><div>\u00a0<\/div><div>Our material scope covers carbon steel, alloy steel, stainless steel, duplex steel, nickel-based alloy and other categories, fully complying with standards including ASTM, ISO and NACE MR0175, and suitable for high-temperature, high-pressure and highly corrosive scenarios. On the process side, we are equipped with customized heat treatment and surface treatment systems, including hot-dip galvanizing, sherardizing, PTFE coating and other processes, which balance product strength, corrosion resistance and assembly compatibility.<\/div><div>\u00a0<\/div><div>Backed by a professional laboratory, our testing division conducts full-item inspections such as PMI composition analysis, UT flaw detection and mechanical property testing. Combined with salt spray test verification, we achieve full-process quality traceability of products, fully meeting the technical requirements of core scenarios such as oil and gas wellhead equipment and subsea systems.<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5e6c813 Tq e-flex e-con-boxed e-con e-parent\" data-id=\"5e6c813\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-79107a4 elementor-widget elementor-widget-heading\" data-id=\"79107a4\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">Materials &amp; Standards<\/span>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4f67bc9 elementor-widget elementor-widget-text-editor\" data-id=\"4f67bc9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>The company specializes in the manufacture of fasteners in accordance with American standards (ASME\/ASTM), Chinese national standards (GB), international standards (ISO), DIN standards, as well as API 20E (BSL-1, BSL-2, BSL-3) and API 20F (BSL-2, BSL-3).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5a96abd e-flex e-con-boxed e-con e-parent\" data-id=\"5a96abd\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-93c13e0 elementor-widget elementor-widget-heading\" data-id=\"93c13e0\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">Coating &amp; Surface Treatment<\/span>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-03b582c elementor-widget elementor-widget-text-editor\" data-id=\"03b582c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<table style=\"font-size: 16px; font-style: normal;\" class=\"TQ-table \">\n<tbody>\n<tr>\n<td><strong>Coating Type<\/strong><\/td>\n<td><strong>Applicable Standards<\/strong><\/td>\n<td><strong>Typical Applications<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Hot-Dip Zinc Coating<\/td>\n<td>ASTM A153; ASTM F2329; ASTM B695; ASTM A123; BS EN ISO 1461<\/td>\n<td>Outdoor and atmospheric exposure; Structural bolting; General corrosion protection (non\u2013high-temperature service)<\/td>\n<\/tr>\n<tr>\n<td>Sherardizing (Thermal Diffusion Zinc Coating)<\/td>\n<td>BS 7371-8; ISO 17668; ISO 14713-3<\/td>\n<td>High-strength fasteners; Offshore and marine environments; Uniform coating without hydrogen embrittlement<\/td>\n<\/tr>\n<tr>\n<td>Electro-Deposited Zinc Plating<\/td>\n<td>ASTM B633; ASTM F1941<\/td>\n<td>General industrial fasteners; Indoor or mild corrosive environments<\/td>\n<\/tr>\n<tr>\n<td>Zinc-Nickel Alloy Electroplating<\/td>\n<td>ASTM B841<\/td>\n<td>Enhanced corrosion resistance; Moderate temperature service; Industrial applications<\/td>\n<\/tr>\n<tr>\n<td>Electroless Nickel Coating<\/td>\n<td>ASTM B733<\/td>\n<td>Precision fasteners; Corrosion and wear resistance; Uniform coating thickness<\/td>\n<\/tr>\n<tr>\n<td>Phosphate Coating<\/td>\n<td>ASTM F1137<\/td>\n<td>Carbon and alloy steel fasteners; Improved lubrication during assembly; Base layer for oil or dry film lubricant<\/td>\n<\/tr>\n<tr>\n<td>PTFE \/ Xylan\u00ae \/ Xylan\u00ae 2 Coating<\/td>\n<td>PPG (Whitford)<\/td>\n<td>Offshore and marine environments; Low friction and anti-galling; Corrosive service conditions<\/td>\n<\/tr>\n<tr>\n<td>Black Oxide Coating<\/td>\n<td>BS ISO 11408<\/td>\n<td>Indoor applications; Dimensional stability; Non-corrosive environments<\/td>\n<\/tr>\n<tr>\n<td>Dry Film Lubricants<\/td>\n<td>Dry Film Lubricant Systems<\/td>\n<td>Controlled tightening; Reduced friction coefficient; Anti-galling for stainless steel and high-strength fasteners<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<style>\n.TQ-table {\n            border: 1px solid #ddd;\n        }\n        .TQ-table td{  \n            align-items: center; \n            justify-content: center; \nborder: 1px solid #ddd;\n        }\n.TQ-table td strong{\ncolor:#555;\n}\n\n    <\/style>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d7c1353 e-flex e-con-boxed e-con e-parent\" data-id=\"d7c1353\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c4dc1ba elementor-widget elementor-widget-heading\" data-id=\"c4dc1ba\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">Inspection &amp; Laboratory<\/span>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0410d69 elementor-widget elementor-widget-text-editor\" data-id=\"0410d69\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<b>Spectrochemical Analysis &amp; Portable PMI<\/b>\n<ul> \n \t<li><b>Ultrasonic Testing (UT)<\/b><\/li>\n \t<li><b>Liquid Penetrant Inspection (LPI \/ PT)<\/b><\/li>\n \t<li><b>Magnetic Particle Inspection (MT)<\/b><\/li>\n \t<li><b>Metallurgical Examination (MET)<\/b><\/li>\n \t<li><b>Hardness \/ Heat Treatment \/ Material Testing (HT)<\/b><\/li>\n \t<li><b>Tensile Test<\/b><\/li>\n \t<li><b>Salt Spray Testing (ASTM B117, Outsourc<\/b> <b>ing<\/b> <b>)<\/b><\/li>\n<\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fd113f9 Tq e-flex e-con-boxed e-con e-parent\" data-id=\"fd113f9\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8fa731b elementor-widget elementor-widget-heading\" data-id=\"8fa731b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">Certifications &amp; Compliance<\/span>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d69022a elementor-widget elementor-widget-text-editor\" data-id=\"d69022a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Authoritative Certifications &amp; Compliance Foundation<\/p><p>Lishui Jingyi Valve Co., Ltd. (also known as Jingyi Fasteners) specializes in R&amp;D and production of high-standard fasteners for the oil and gas industry. With comprehensive certification qualifications and rigorous compliance management, we have become a trusted partner in the industry.<\/p><p>System Certification<\/p><p>We have obtained the <strong>ISO Quality Management System Certification<\/strong>, establishing a full-process quality management system covering R&amp;D, production, testing and service, to realize the standardization and traceability of product quality.<\/p><p>Product-specific Certifications<\/p><ul><li><p><strong>API 20E Certification<\/strong>: Qualified for the production of carbon steel and alloy steel fasteners, our products are suitable for conventional and high-pressure working conditions in the oil and gas industry.<\/p><\/li><li><p><strong>API 20F Certification<\/strong>: Endowed with the manufacturing capacity of stainless steel and corrosion-resistant alloy fasteners, our products meet the application standards for harsh environments such as high-corrosion and H\u2082S-containing conditions.<\/p><\/li><li><p><strong>Salt Spray Test Certification<\/strong>: Passed professional salt spray corrosion tests, our products have verified surface treatment and material corrosion resistance, which are suitable for high-salinity working conditions such as marine and offshore applications.<\/p><\/li><\/ul><p>Standard Compliance Implementation<\/p><p>All products are strictly designed and manufactured in accordance with international and domestic standards including ISO, API, ASME, GB and DIN. Meanwhile, they comply with the special requirements of <strong>NACE MR0175\/ISO 15156<\/strong> for H\u2082S-containing working conditions, ensuring compliant application in key scenarios such as wellhead equipment, Christmas trees, pressure vessels and subsea oil &amp; gas systems.<\/p><p>Full-process Compliance Control to Ensure Product Reliability<\/p><p>In the manufacturing process, relying on the comprehensive testing capabilities of our in-house laboratory, we carry out a series of inspections including <strong>PMI material composition analysis, mechanical property testing, ultrasonic testing (UT), liquid penetrant inspection (LPI\/PT)<\/strong> and <strong>magnetic particle testing (MT)<\/strong>. Complete heat treatment records and product traceability files are kept for each batch of products, ensuring that all products meet standard specifications and customer technical requirements, thus providing solid support for the safe and stable operation of the oil and gas industry.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Technical &amp; Quality Technical Capability Lishui Jingyi Valve Co., Ltd. focuses on the fastener sector for the oil and gas [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-71","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/jingyifastener.com\/en\/wp-json\/wp\/v2\/pages\/71","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jingyifastener.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/jingyifastener.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/jingyifastener.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jingyifastener.com\/en\/wp-json\/wp\/v2\/comments?post=71"}],"version-history":[{"count":65,"href":"https:\/\/jingyifastener.com\/en\/wp-json\/wp\/v2\/pages\/71\/revisions"}],"predecessor-version":[{"id":1963,"href":"https:\/\/jingyifastener.com\/en\/wp-json\/wp\/v2\/pages\/71\/revisions\/1963"}],"wp:attachment":[{"href":"https:\/\/jingyifastener.com\/en\/wp-json\/wp\/v2\/media?parent=71"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}