lyklzy 发表于 2018-5-16 15:55:57

ASTM A703A703M-18 Standard Specification for Steel Castings, General Requirement

ASTM A703A703M-18 Standard Specification for Steel Castings, General Requirements, for Pressure-Containing Parts （承压铸钢件通用要求


admin 发表于 2018-5-17 09:51:20

谢谢您的分享，金币已奖励!
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