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English Translations » 【管道阀门技术圈】 » Meaning of letter codes in technical specifications for stee

Meaning of letter codes in technical specifications for steel pipes

2018-04-29View Original

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Technical requirements for the procurement of 3PE-coated buried steel pipes: GB/T8163 SMLS SH3405 SCH30; GB/T3091 ERW, as well as GB/T3091 in ordinary grade. Technical requirements also apply to elbows: GB/T8163 LR BW SCH3408 SCH20. Please provide a detailed explanation of what letters such as BW or ERW mean. Thank you
Reply #22018-04-29
BW refers to butt welding, which denotes the end face configuration of the pipe fitting. ERW is resistance welding, referring to the method used for welding pipes

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Translated at 2026-07-21 04:19:55

Original: https://bbs.hcbbs.com/thread-1977534-1-1.html

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