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ABOUT US
Threeway Steel Co., Ltd, is a world-class production and service provider with 32 years of steel pipe manufacturing, stocking, and exporting for the world’s energy industry and certain other industrial applications. Our manufacturing system integrates. 8 world-class submerged arc straight seam welded pipe production line, pipe hot-rolling and cold-forming, heat treatment, threading and finishing, making, warehouse in China, we also have our R&D network focus on enhancing our product portfolio and improving our Industry Operation Capability, Quality competitiveness, Cost control, Perfect integrated service capability is united by a passion for excellencelly promoting business growth.
You can contact us any way that is convenient for you. We are available 24/7 via fax or email. 
You can also use a quick contact form below or visit our office personally.

HOT PRODUCTS

CUSTOMIZED SERVICE
Greasepaint - the atmospheric corrosion undemanding environment
Country paint
Phenol resin coating
Epoxy coatings
Polyurethane coatings
Polyethylene, polypropylene resin coating
Furan resin coating
Sphalt coating
Heavy anti-corrosion coatings
NEWS
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Commonly Used Standards for Straight Seam Welded Steel Pipes: GB/T 3091, GB/T 13793, API 5L, ASTM A53. How Do These Correspond?
2026-10-16

Straight seam welded steel pipes are widely used in water supply, construction, industrial piping, and oil and gas transportation, but not all products meet the same technical requirements. Four commonly referenced standards are GB/T 3091, GB/T 13793, API 5L, and ASTM A53. GB/T 3091 covers welded pi

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2026-10-16
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Differences between Straight Seam Steel Pipes And Spiral Steel Pipes: Weld Type, Stress Distribution, And Selection Scenarios.
2026-10-15

Straight seam and spiral steel pipes are common welded pipes for oil and gas transmission, water supply, construction, and infrastructure. Straight seam pipes have a longitudinal weld parallel to the pipe axis and are commonly produced by ERW and LSAW processes, offering dimensional accuracy and con

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2026-10-15
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A Comprehensive Analysis of Straight Seam Steel Pipes: The Core Differences Between ERW, LSAW, And EFW Processes
2026-10-13

Straight seam steel pipes, also called longitudinally welded pipes, are widely used in oil and gas, water supply, construction, and mechanical engineering. They are produced by forming steel plates or strips into a cylinder and welding the edges along the pipe axis. Common manufacturing methods incl

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2026-10-13
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Differences between ASTM A500 And EN 10210: Comparison of American And European Standards for Hollow Core Profiles
2026-10-07

ASTM A500 and EN 10210 are key international standards for structural hollow sections but are not interchangeable. ASTM A500 covers cold-formed welded and seamless carbon steel tubing for building frames and general construction. EN 10210 specifies hot-finished hollow sections from non-alloy and fin

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2026-10-07
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Providing professional one-stop procurement service for customers with excellent quality, competitive price, convenient transportation, and timely delivery.
  22nd Floor, Royal Wing Tower, Long Champ International Building, No.9 Xiangfu Road, Changsha, Hunan, China, PC:410116
  sales@threewaysteel.com
  0086-0731-8867-8598                                             

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