zzcnhic 发表于 2018-2-3 21:45:34

ASTM A508/A508M − 17

本帖最后由 zzcnhic 于 2018-2-3 21:52 编辑

ASTM A508/A508M − 17 Standard Specification for Quenched and Tempered Vacuum-Treated Carbon and Alloy Steel Forgings for Pressure Vessels

admin 发表于 2018-2-8 19:33:55

谢谢您的分享，金币已奖励!
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