... DN2000 3.Standard:ANSI,ASTM,MSS,JIS,DIN,EN Carbon steel forged ASTM A105 Blind flange We started to product ... .3. Size1/2-78 inch (DN15-DN2000)4. MaterialCarbon Steel Material: A105,SS400,SF440 RST37.2,S235JRG2,P250GH,C22.8 ... , shipbuilding, construction, etc .6. Production processraw material--cutting--heating--forging--heat treatment--maching--inspection.7. Inspectionfactory in-house self check ...