undskyld 发表于 2021-2-12 23:16:22

ASTM B956-19e1

ASTM B956-19e1
Standard Specification for Welded Copper and Copper-Alloy Condenser and Heat Exchanger Tubes with Integral Fins

admin 发表于 2021-2-22 09:13:16

谢谢您的分享,金币已奖励!
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