1.Size: 1/2"--24" 2.Material:carbon steel 3.Certification:ISO9001 4.Standard:ANSI,DIN,JIS,ASME,BS,etc ... Flange,Blind Flange,Threaded Flange,Non-standard flange; 2 We are a specialized manufactory in producing Flanges; ... JIS Flange, BS Flange and GB Flange etc; 4 Size: 1/2"--24" 5 Printing: Yellow print, black print, ... custom order, please feel free to contact. high quality and low price blind flange