The development of production Technology of steel tubes (Steel pipe) began in the rise of bicycle manufacturing. The development of oil in the early 19th century, the manufacture of ships, boilers and airplanes during the two World War II, the production of thermal power boilers after the Second World War, the development of the chemical industry and the drilling and transportation of oil and natural gas, etc., have vigorously promoted the development of steel pipe industry in varieties, yield and quality
Steel tubes are not only used for conveying fluids and powdered solids, exchanging heat energy, making mechanical parts and containers, it is also an economical steel. The steel pipe is used to manufacture architectural structure mesh rack, pillar and mechanical bracket, which can lighten the weight, save metal 20, and realize the mechanized construction of factory. The use of steel tubes to make road bridges can not only save steel, simplify construction, but also greatly reduce the area of the coating, save investment and maintenance costs.