STEEL KNOWLEDGE

Why Open-Ended Piles Cause Less Soil Heave

When a pile is driven close to an existing building, basement, buried pipeline or retaining wall, ground movement during installation can become an engineering concern of its own. A closed-ended pile generally displaces soil corresponding to its full cross-sectional area as it penetrates the grou... Read More

EN 10210, EN 10219 and LSAW Tubulars for Offshore Wind

Table of Contents 1.Where Tubular Products Are Used in Offshore Wind 2.EN 10210 vs EN 10219 Hollow Sections 3.Grade Selection: S355J2H to S460 4.Offshore Wind Tubulars: When LSAW Becomes Relevant 5.Fatigue, Welding and NDT 6.Certification and Delivery Requirements 7.How to Specify an Of... Read More

Strategic Procurement of EN 10204 3.2 LSAW Steel Pipes

For critical pipeline, offshore, and sour-service projects, EN 10204 Type 3.2 certification gives buyers an added level of confidence in the LSAW steel pipe they receive. It provides jointly validated inspection documentation for the supplied material, but it should not be confused with a full-ti... Read More

Steel Pipe Weld Inspection: Quality Control Process from Mill to Jobsite

TABLE OF CONTENTS 1. Weld Quality Is Built During Manufacturing, Not Only Verified After Production 2. Steel Pipe Quality Control Process: From Raw Material to Finished Pipe 3. Different Steel Pipe Types Require Different Inspection Approaches 4. LSAW Pipe Inspection: Controlling Longitudinal W... Read More

Why JCOE LSAW Pipe Is Ideal for Custom Heavy Wall Steel Pipe Projects

Quick Answer: JCOE LSAW pipe is ideal for custom heavy-wall applications because it offers flexible production, accurate dimensions, and reliable weld quality. Unlike traditional UOE production, JCOE can efficiently handle customized diameters, wall thicknesses, and project-based quantities, maki... Read More

LSAW vs SSAW vs Seamless Steel Pipe: How to Choose the Right Steel Pipe

Key Takeaways for Buyers and Engineers Choosing the right steel pipe manufacturing process is essential for offshore structures, piling projects, marine construction, and other heavy engineering applications. LSAW steel pipes, SSAW steel pipes, and seamless steel pipes are all widely used in indu... Read More

Hot Rolled vs Cold Rolled Steel Tubes: Differences, Applications & Buying Guide

Introduction When sourcing structural steel tubes for construction, solar projects, or industrial fabrication, buyers often face a common question: should they choose hot rolled or cold formed steel tubes? Hot rolled and cold rolled steel tubes may look similar, but their manufacturing processes ... Read More

Hot-Dip Galvanized Steel Pipe: From Standard Zinc Layers to 70μm Heavy-Duty Protection

  When you’re dealing with major infrastructure or industrial builds, steel is pretty much the foundation of everything. But the real test isn’t just how much weight the steel can hold—it’s how it handles getting beat up by the elements year after year. Standard galvanizin... Read More

EN 10219 vs GB/T 6728: 5 Differences for Structural Hollow Section Procurement

Executive Summary For international EPC projects, EN 10219 (European Standard) and SAC GB/T 6728 (Chinese Standard) define technically comparable cold-formed welded structural hollow sections (RHS, SHS, CHS). While S355JR serves as the primary equivalent Chinese grade to Q355B due to their mat... Read More

Solar Procurement Risks Under GB/T 6728-2025

  If you are a solar EPC contractor or procurement manager buying structural steel hollow sections from China, you need to update your specification sheets right now. As of March 1, 2026, China’s cold-formed steel industry officially rolled out the new GB/T 6728-2025 standard, completely re... Read More

GB/T 6728-2025 PDF Download & Comparison Guide

Table of Contents · Engineering Reference Documents · Standard Overview · Key Technical Updates · Grade Equivalence Table · Technical Comparison (2017 vs. 2025) · Applications · Procurement Checklist · Frequently Asked Questions · Supplier Capability · Technical Support   GB/T 6728-2025 r... Read More

Sourcing EN 10255 Steel Pipes: Technical Factors Beyond Price

When evaluating steel pipes for low-pressure gas, water supply, or fire sprinkler networks, the EN 10255 standard is a universal reference on almost every technical inquiry. For procurement professionals, it is common practice to compare quotations based primarily on the per-ton price. However, i... Read More
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