ASTM A234-WPC socket welded flange,ASME B16.9 SIZE: 1/2" - 48" DIMENSIONS: ASME B16.9/B16.28 PN: ... Model NO:WNRF,SORF etc.Blind flangeColor:black/galvanizedAPI,PED,ISO certificate,DIN,JIS,BS,GOST standardMaterial:carbon steel for high ... buyer's requirement ASTM A234-WPC socket welded flange,API,ISO,PED certificate,ASME B16.9