... water transportation. Line pipe for petrole Description(Unit,mm) Round pipe, 20, 22.2, 25.4, 32, 38, 44.5, 48, 50.8 ... , 57, 63.5, 76, 83, 89 Square pipe 16X16,19X19,20X20,22.2X22.2 ... ,60X60,70X70and other rectangular or oval pipe of the same specifications. Thickness from 0.85mm to 3mmApplication1.Stockade tube2.The gardening uses ...