Diameter:600 to 6300mm Standard:ASME,EN,DIN,BS etc. Certificates:9 ship classification society(DNV,BV,ABS,GL, ISO9001:2008 tube sheet / tube plate1)Size:Up to 2500mm OD and max thickness of 400mm;2)Material: Q345,16Mn,Ti alloy steel ,Ni alloy steel.3)standard of steel:ASME, DIN, BS, EN, JIS,etc.4)Price & payment:Depend on Material of steel and quantity,but we will give you competitive prices.T T, ...