moolea 发表于 2017-8-22 18:49:36

API 20A-2017 Carbon Steel, Alloy Steel, Stainless Steel, and Nickel Base Alloy C

API 20A-2017 Carbon Steel, Alloy Steel, Stainless Steel, and Nickel Base Alloy Castings for Use in the Petroleum and Natural Gas Industry.pdf



admin 发表于 2017-8-23 15:09:40

谢谢您的分享,金币已奖励!

rdl791006 发表于 2019-9-26 10:43:30

谢谢您的分享！学习新的领域！
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