undskyld 发表于 2021-2-13 22:30:39

ASTM B819-19

ASTM B819-19
Standard Specification for Seamless Copper Tube for Medical Gas Systems





admin 发表于 2021-2-22 09:13:34

谢谢您的分享,金币已奖励!
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查看完整版本: ASTM B819-19