... 1.Material :SS400,A105 ,Q235 ect. 2.Size:DN15-DN2000 3.Standard:ANSI,ASTM,MSS,JIS,DIN,EN Carbon steel forged ... . Size1/2-78 inch (DN15-DN2000)4. MaterialCarbon Steel Material: A105,SS400,SF440 RST37.2,S235JRG2,P250GH,C22.8 ... , heat exchanger, shipbuilding, construction, etc .6. Production processraw material--cutting--heating--forging--heat treatment--maching--inspection.7. Inspectionfactory in ...