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Welded steel pipes-the most popular building material

As we all know, welded steel pipe is more and more popular which is formed by the deformation of a steel belt or steel plate after the formation of the round or square shape and then finished by the process of welding. The raw material of various steel pipes is steel sheet or strip and there exists welding joints on the steel pipe surface. In the 1930s, with high quality steel strip production, it makes more progress in welding technology and test technology which gets a rapid development. The quality of welding is also constantly improving, which makes the types of steel pipe varying. In some areas, welded steel pipe will substitute for seamless steel tube as the latter has a low production efficiency.

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Welded square steel pipe is also called welding pipe which is produced by the deformation of steel plate or steel strip. The round steel pipe has two opening ends as well as a middle hollow circle. For larger steel pipe equipment, the circular tube specification has the outer diameter and wall thickness which has two modes that is welding and seamless. T shape welded steel pipe is always resistant to corrosion in environment containing sulfuric acid. In addition, T welded steel tube containing nickle whose higher content can make more stronger corrosion resistance. In such a general environment, it is necessary to increase chromium in the steel tube of the T-welding so as to prevent erosion. The poor condition of the edge of the steel belt is the important cause of the wrong side. Moreover, vertical spiral tube and the coefficient of heat transfer can have a impact on heat flux density and structural parameters. In the production of the welding steel pipe, the wrong side sometimes happens. In practical production, it is necessary for steel pipe manufacturers to analyze the wrong side and embankment measures because of the wrong side.

The basic problem is the relationship between pipe term and pipe application and it can be divided into large diameter pipe and small diameter pipe. The application of steel pipe includes conveying fluid and repackaging, exchanging heat energy as well as manufacturing machinery parts and devices. Steel pipe such as round steel pipe is the core of architecture. The classification is electric arc welding tube, high frequency electric resistance welding tube and so on. Spiral welded pipe is used for oil and gas transportation and furnace welding pipe is usually used for water gas.

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