ygs67 发表于 2018-3-14 15:38:46

ASTM A20 A20M-18

ASTM A20 A20M-18 Standard Specification for General Requirements for Steel Plates for Pressure Vessels1

admin 发表于 2018-3-14 16:34:25


谢谢您的分享，金币已奖励!

myyeh 发表于 2018-3-14 18:49:26

谢谢您的分享-------------------------
页: [1]
查看完整版本: ASTM A20 A20M-18