兑水 发表于 2009-11-25 07:34:43

ASTM F 794-2003 依据控制内径的聚氯乙烯(PVC)异型重力下水...

F794-03 Standard Specification for Poly(Vinyl Chloride) (PVC) Profile Gravity Sewer Pipe and Fittings Based on Controlled Inside Diameter
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