... /flat/square)* Rod, half round bar* Pipe/tube (round/square)* Seamless tube* Pipe fitting* FlangeStandard: ASTM, JIS, EN, BS, GB, DIN ... #, 180 #NO 4 surface: 240 #, 320 #, 400 #Application: Line Pipe, Casing And Tubing, Fluid Pipe, Water Delivery, Heating Pipe, Power Pipe ...