Seamless pipe is a long steel pipe with a hollow section and no joints on the periphery. 1. According to production methods, seamless steel pipes can be divided into hot-rolled pipes, cold-rolled pipes, cold-drawn pipes, and extruded pipes. 2. According to the shape, there are round pipes and special-shaped pipes. Special-shaped tubes include square tubes, rectangular tubes oval tubes, semicircular tubes, triangular tubes, hexagonal tubes, convex-shaped tubes, plum-shaped tubes, etc. 3. According to materials, it can be divided into ordinary carbon structure tube, low alloy structure tube, high-quality carbon structure tube, alloy structure tube, stainless tube, etc. 4. According to the purpose, there are boiler tubes, geological tubes, oil tubes, etc. Changsha Xiangjia Metal Materical Co., Ltd. the Steel Pipe Division of ADTO GROUP, is one of the leading manufacturers of steel products in China. We specializes in manufacturing all kinds of steel pipe in various grades and sizes. Years of production experience and manufacturing facilities who have a capacity of 200,000 tons per annual will ensure the good quality and competitive duration of our products.