liuxilin1215 发表于 2014-3-7 07:46:05

ASTM A194A/194M-10a 高温高压用碳钢和合金钢螺帽标准规范

ASTM A194A/194M-10a Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both


admin 发表于 2014-3-7 17:40:21


谢谢您的分享，金币已奖励！
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