... DN600, 1/2 inch to 24inch2.Material: carbon steel, stainless steel3.Standard: ANSI,JIS,DIN,BS4504,SABS1123, ... neck, blind, thread, socket weld flange5.Process: free forging, plate cutting, heat treat, machining6.Surface Treat: Anti- ... -house self check or Third Party inspection11.Carbon Steel:A105,SS400,SF440,RST37.2,S235,C22.8We ... don't hesitate to contact me for flange price uni steel flange blind