核心提示:閥門用燒結(jié)閥座的PTFE和RPTFE的美標(biāo)標(biāo)準(zhǔn)號或國標(biāo)標(biāo)準(zhǔn)號?ASTM D4894-07 Standard Specification for Polytetrafluoroethylene (P
閥門用燒結(jié)閥座的PTFE和RPTFE的美標(biāo)標(biāo)準(zhǔn)號或國標(biāo)標(biāo)準(zhǔn)號?ASTM D4894-07 Standard Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials. 問:閥門用燒結(jié)閥座的PTFE和RPTFE的美標(biāo)標(biāo)準(zhǔn)號或國標(biāo)標(biāo)準(zhǔn)號?答:ASTM D4894-07 Standard Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials.聚四氟乙烯