Chinese Standard: GB/T 13404-2008

Non-metallic PTFE envelope gaskets for pipe flanges

全国管路附件标准化技术委员会

本标准规定了管法兰用非金属聚四氟乙烯包覆垫片（以下简称垫片）的型式与尺寸，要求，标记，检验，标志、包装和贮运。
本标准适用于公称尺寸DN10～DN600,公称压力PN6～PN63和公称尺寸NPS1/2～NPS24，公称压力Class150、Class300的突面法兰用非金属聚四氟乙烯包覆垫片。

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