Seamless Steel Pipe Standard API 5L GR.B, ASTM A106 GR.B, DIN1629 ST52.0 This is a high quality Seamless Steel Pipe . It can withstand high pressure and sheer strength well. It can be used for welding into all kinds of production, such as automotive spare parts, tractor’s parts, agricultural equipments, machinery parts, hydraulic gears, knots and screws etc…