... : 150,300,600,900,1500 Sizes: DN15 to DN2000, 1/2 inch to 78 inchStandard: ANSI,JIS,DIN,BS4504,SABS1123,EN1092 ,UNI ... check or Third Party inspectionCarbon Steel:A105,SS400,SF440,RST37.2,S235,C22.8We can also make flanges according customer’s ...