The development of steel pipe production technology began in the rise of bicycle manufacturing, the development of oil in the early 19th century, the manufacture of ships, boilers and aircraft during the two world wars, the manufacture of thermal power boilers after the Second World War, Steel Pipe the development of chemical industry, Oil and gas drilling and transportation, are strong to promote the steel industry in the variety, yield and quality of the development.
Steel pipe is not only used to transport fluid and powdery solid, exchange heat, manufacture mechanical parts and containers, it is also an economic steel. With steel pipe manufacturing building structure grid, pillars and mechanical support, can reduce the weight, save metal 20 ~ 40%, and can realize the mechanization of factory construction. Manufacture of road bridges with steel pipes not only saves steel, simplifies construction, Steel Pipe but also greatly reduces the area of coated protective coatings, saving investment and maintenance costs.
The steel pipe can be classified according to the rolling process, whether there is a seam and a cross-sectional shape. According to the rolling process classification, the steel pipe can be divided into hot-rolled steel pipe and cold-rolled steel pipe; according to whether the steel pipe seam classification, steel pipe is divided into seamless steel pipe and welded steel pipe, which commonly used welded pipe by weld type can be divided into high-frequency welded pipe , Straight seam submerged arc welded pipe, Steel Pipe spiral submerged arc welded pipe 3 kinds.
Steel pipe has the following advantages:
First, the use of anti-embroidered steel pipe surface more durable, not too fast oxidation, not in the formation of white rust on the steel pipe;
Second, the full protection of the steel pipe, through the heating of each part of the steel pipe are plated with zinc, bumps have been protected;
Third, with anti-corrosion characteristics of wear and tear, Steel Pipe so that the use of steel pipe longer
Four, because already in the steel pipe has been plated outside the zinc, which eliminates the need for oil or paint outside the time, the construction is more convenient;
Five, steel pipe is three or nine days will not crack, Steel Pipe especially for the cold weather in the north!