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moolea 发表于 2017-8-17 20:18:38

ASTM A498-17 Seamless and Welded Carbon Steel Heat-Exchanger Tubes with Integra

ASTM A498-17 Standard Specification for Seamless and Welded Carbon Steel Heat-Exchanger Tubes with Integral Fins

admin 发表于 2017-8-21 18:30:10

谢谢您的分享,金币已奖励!

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