... , nuclear energy, food, drink, medicine ect, where the pipe is required comparative high liquid medium.Seamless steel pipeStainless seamless steel ... pressure, high strength, mechanical structural. Welded Pipe Welded pipe is the steel pipe that is welded after rolled by steel plate or steel ... steel, PC steel bar, flat, bulb flat, coil steel, I-beam, H-beam, square tube, rectangular tube, L section steel ...