Steel pipe production technology development began with the rise of the bicycle manufacturing, oil development in the early 19th century, two world wars ships, boilers, aircraft manufacturing, after the second world war thermal power boiler manufacturing, chemical industry and the development of oil and gas drilling and transportation, effectively driving the steel pipe industry in the development of varieties, yield and quality.Generally, steel tubes are divided into seamless steel tubes and welded steel tubes according to the production method. This time, we'll talke about welding steel tubes.

Welded steel tubes are welded steel tubes with joints. The production of welded steel tubes is a process in which the blanks (steel plates and strips) are bent and rolled into tubes of required cross-sectional shape and size by various forming methods, and then welded by different welding methods to obtain steel tubes.Compared with seamless steel tube, welded pipe has the characteristics of high product precision, especially the precision of wall thickness, simple main equipment, small floor space, continuous operation in production, flexible production, wide product range of the unit and so on.

Welding tubes, which are divided from production technology, are divided into: Spirally Submerged Arc Welding;LongitudinallySubmerged Arc Welding;ERW Electric Resistance Welding.