Features: stainless steel cap. Size:1/2"-48"(DN15-DN600). Standard: ANSI, ASTM,MSS, ... 10- Sch xxsApplicable standardASME , ASTM, MSS ,JIS , DIN , EN,MaterialCarbon steel :ASTM A234 WPB ANSI B16.9ConnectionButt-weldingApplications rangsuch as oil ... living by quality and developing our career by credit standing" stainless steel cap