undskyld 发表于 2021-2-9 21:54:08

ASTM A703/A703M-20a

ASTM A703/A703M - 20a
Standard Specification for Steel Castings, General Requirements, for Pressure-Containing Parts




admin 发表于 2021-2-22 09:10:22

谢谢您的分享,金币已奖励!
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