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发表于 2009-12-4 15:05:30
ASTM F 1973-2005 工厂安装在聚乙烯（PE）油气输送系统...
F1973-02 Standard Specification for Factory Assembled Anodeless Risers and Transition Fittings in Polyethylene (PE) and Polyamide 11 (PA11) Fuel Gas Distribution Systems