ASTM A53/A53M-2018 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
ASTM A53 A53M-2018 镀锌、焊接和无缝管道、黑色和热浸镀钢管的标准规范-英文版
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常州精密钢管博客网
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