Product type:HT-008 Product specification:NPS2"-40"(DN50-DN1000) Product materials:A105、LF2、LF6、42CrMo、F6a,2Cr13,F304、F316、F317、F347、F304L、F316L、F321、F51、F53、F55、718、825、625…… Soft-sealing valve seat consists of types of PEEK, NYLON or PTFE/RPTFE