松雨霞 发表于 2018-10-12 11:30:38

ASTM A53 A53M - 2018

Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

admin 发表于 2018-10-14 09:49:10

谢谢您的分享，金币已奖励!
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