Ductile资源列表
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[国外标准] BS EN 15655-2009 Ductile iron pipes, fittings and accessories. Internal polyurethane lining for pipe
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[国外标准] BS ISO 8179-1-2004 Ductile iron pipes. External zinc-based coating. Metallic zinc with finishing lay
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[国外标准] BS EN 969-2009 Ductile iron pipes, fittings, accessories and their joints for gas pipelines — Requir
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[国外标准] BS EN 545-2002 Ductile iron pipes, fittings, accessories and their joints for water pipelines — Requ