Articles

Industry Insights

Technical guides and export know-how from our engineering team.

16 Aug 202616 min read

API 5L PSL2 Requirements: CVN Impact, NDT, MTR Explained

Everything buyers need to know about API 5L PSL2 — Charpy V-notch impact testing, non-destructive testing, mill test certificates, chemistry limits and the PSL1 vs PSL2 differences.

API 5L

16 Aug 202616 min read

API 5L X42 vs X52 vs X60 vs X70: Grade-by-Grade Comparison

A complete comparison of API 5L line pipe grades X42, X52, X60 and X70 — chemical composition, yield and tensile strength, toughness, weldability, cost and how to pick the right grade.

ASTM A106

16 Aug 202616 min read

ASTM A106 Gr.A vs Gr.B vs Gr.C: Selection Guide

How to choose between ASTM A106 Grades A, B and C — mechanical properties, chemistry, temperature limits, availability and when to step up to alloy or low-temperature grades.

import steel pipe from China

15 Aug 202618 min read

How to Import Steel Pipes from China: A Step-by-Step Guide for Buyers

A complete step-by-step guide to importing seamless steel pipes from China — specifications, supplier vetting, quoting and payment, production and third-party inspection, shipping, and customs clearance.

steel pipe glossary

15 Aug 202625 min read

Seamless Steel Pipe Glossary: 40+ Terms Every Buyer Should Know

A plain-English glossary of 40+ essential seamless steel pipe terms — manufacturing, dimensions, standards, testing, and trade — so you can specify and order with confidence.

steel pipe industry

15 Aug 202618 min read

Steel Pipe Industry Trends 2026–2030: What Buyers Should Know

Key trends shaping the global seamless steel pipe market through 2030 — supply and demand shifts, low-carbon steelmaking and carbon tariffs, digital and AI-powered procurement, and how buyers should plan.

steel pipe standards

15 Aug 202615 min read

Steel Pipe Standards Compared: ASTM, EN, API, ISO and Chinese GB

How ASTM, ASME, API, EN, ISO and Chinese GB standards compare across carbon, line pipe, boiler, alloy, stainless and precision seamless pipes — plus grade equivalents and how to choose the right one.

ASTM A106

14 Aug 202612 min read

ASTM A106 Carbon Steel Pipe: Grades, Specs & Applications

A complete guide to ASTM A106 seamless carbon steel pipe — Grades A, B and C, chemical composition, mechanical properties, temperature limits and typical applications for buyers.

mill test certificate

13 Aug 202612 min read

Steel Pipe Mill Test Certificates: EN 10204 3.1, 3.2 & What Buyers Should Check

Understand steel pipe mill test certificates (MTC) — EN 10204 2.1, 2.2, 3.1 and 3.2 types, how to read a certificate, and what to verify before payment.

boiler tubes

12 Aug 202612 min read

Boiler Tubes & Heat Exchanger Tubes: A Buyer's Selection Guide

How to specify boiler and heat exchanger tubes — common materials (SA192, SA210, SA213, T11, T22), sizes, tolerances and testing requirements for power plants and refineries.

hydraulic cylinder tubes

11 Aug 202611 min read

Hydraulic Cylinder Tubes: Precision, Tolerance & Surface Finish Explained

What to specify when buying precision tubes for hydraulic cylinders — E355/ST52 grades, dimensional tolerances, surface finish, and machining/honing requirements.

steel pipe

10 Aug 202612 min read

Steel Pipe Buying FAQ: Price, MOQ, Lead Time & Payment Terms

Answers to the most common questions when buying steel pipe from a supplier — how prices are set, minimum order quantities, production lead times, payment terms and shipping.

steel pipe

10 Aug 20267 min read

How to Calculate Steel Pipe Weight per Meter (Formula & Chart)

Learn the exact formula to calculate steel pipe weight per meter with worked examples — plus a quick reference chart and common pitfalls to avoid when ordering.

low temperature pipe

3 Aug 20268 min read

ASTM A333 Low-Temperature Steel Pipe: Gr.6 Explained

Everything export buyers need to know about ASTM A333 low-temperature carbon steel pipe — grade differences, impact testing, applications and ordering tips.

stainless steel pipe

28 Jul 20269 min read

Stainless Steel Seamless Pipe: ASTM A312 TP304 vs TP316

How to choose between ASTM A312 TP304 and TP316 stainless steel seamless pipe — composition, corrosion resistance, applications and procurement tips for export buyers.

alloy steel pipe

20 Jul 202610 min read

ASTM A335 Alloy Steel Pipe: P11, P22 & P91 Grades Explained

A complete guide to ASTM A335 chrome-molybdenum alloy steel pipe — grade comparison, chemical composition, mechanical properties, applications and how to order.

steel pipe basics

18 Jun 202610 min read

Seamless vs. Welded Steel Pipe: Which One Do You Need?

A practical comparison of seamless and welded steel pipes — manufacturing methods, strength, cost, and which applications call for seamless pipe.

API 5L

5 Jun 20269 min read

API 5L Line Pipe Guide: PSL1 vs PSL2, Grades and Sizing

A practical guide to API 5L seamless line pipe — PSL levels, grade selection, pipe sizes, and what to specify when ordering for your pipeline project.

buying guide

22 May 20268 min read

How to Choose the Right Steel Pipe Grade for Your Export Project

A step-by-step approach to selecting carbon steel pipe grades and standards — from working conditions to third-party inspection requirements.

manufacturing

30 Apr 20268 min read

How Seamless Steel Pipes Are Made: From Billet to Finished Tube

Understand the full manufacturing process of seamless steel pipes — billet heating, piercing, rolling, sizing, heat treatment and finishing.

quality control

12 Apr 20269 min read

Inspection and Testing of Seamless Steel Pipes: What Buyers Should Verify

A checklist of the key inspection and testing methods for seamless steel pipes — hydrostatic testing, ultrasonic testing, mechanical tests and documentation.

export

20 Mar 20269 min read

Export Essentials: Incoterms, Packing and Shipping Documents for Steel Pipe

What buyers need to know about Incoterms, sea freight packing and export documentation when importing seamless steel pipes.