ASTM F1970-05 Standard Specification for Special Engineered Fittings, Appurtenances or Valves for us
标准简介
ASTM F1970-05 Standard Specification for Special Engineered Fittings, Appurtenances or Valves for use in Poly (Vinyl Chloride) (PVC) or Chlorinated Poly (Vinyl Chloride) (CPVC) Systems
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