兑水 发表于 2009-12-3 09:28:58

ASTM F 1803-2006 以受控内径为依据的聚氯乙烯封闭异型自流管...

F1803-04 Standard Specification for Poly (Vinyl Chloride)(PVC) Closed Profile Gravity Pipe and Fittings Based on Controlled Inside Diameter
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