兑水 发表于 2009-9-8 11:15:51

ASTM A 694-2003 高压传输设备用碳素钢及合金钢管法兰...

A694/A694M-03 Standard Specification for Carbon and Alloy Steel Forgings for Pipe Flanges, Fittings, Valves, and Parts for High-Pressure Transmission Service
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