兑水 发表于 2009-12-2 16:25:35

ASTM F 1697-2002 现用下水道和导管的机制螺旋形衬管修复用...

F1697-02 Standard Specification for Poly(Vinyl Chloride) (PVC) Profile Strip for Machine Spiral-Wound Liner Pipe Rehabilitation of Existing Sewers and Conduits
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