兑水 发表于 2009-9-14 09:07:22

ASTM B 729-2005 统一编制牌号为N0820,NO8026和NO8024无缝镍合金管....

B729-00 Standard Specification for Seamless UNS N08020, UNS N08026, and UNS N08024 Nickel-Alloy Pipe and Tube
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