13820468844 sales of American Standard Pipe is a hollow cross-section, no seams around the long bar of steel. Steel hollow section with a large number of channels for transporting fluids, American standard seamless steel pipe standards such as the transportation of oil, natural gas, gas, water and some solid materials, pipes, etc.. Steel pipe with round solid steel compared to the same torsional strength in bending, lighter, is an economic cross-section steel, widely used in the manufacture of structural parts and mechanical parts, such as drill pipe, automotive drive shafts, bicycle frame construction using steel scaffolding. Steel pipe manufacturing annular parts, improve material utilization, and simplify the manufacturing process, saving material and machining time, such as bearing rings, jack sets, has been widely used to make steel. Steel or a variety of conventional weapons indispensable material, gun barrels to make steel. Steel pipe cross-section shape can be divided into the tube and shaped tubes. Since the circumference of the same conditions, the area of ??a circle, with round pipe can carry more fluid. In addition, the circular cross section to withstand internal or external radial pressure force is uniform, so the vast majority of the pipe is pipe.