https://www.abtersteel.com/
API 5L seamless pipe, Carbon Steel Pipe, Casing tubing ,ERW & LSAW
Mar 5, 2026 - Hebei Abter Steel Co., Ltd were founded on July 3st, 2006, located at Cangzhou City, which is a large-scale steel pipe manufacturing enterprise producing ERW...
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https://www.triosteel.com/
Leading API 5L Pipes Manufacturers & Exporters in India - Trio Steel
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https://studylib.net/doc/27619412/api-5l-2007
API 5L Line Pipe Specification: Steel for Pipeline Transportation
ANSI/API 5L specification for steel line pipe used in petroleum and natural gas pipeline transportation systems. Conforms to ISO 3183:2007.
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https://www.haihaopiping.com/
ASTM A234 butt welding pipe fittings,ASME B16.5 F316 weld neck flange,API 5L PSL1 seamless pipes
Haihao Group manufacture butt welding pipe fittings,forged pipe fittings,seamless steel pipe and flanges products with carbon/stainless/alloy steel.