1. SSAW pipe: the 'SSAW' is the abbreviation of Spirally Submerged Arc Welding, i.e. Spiral Submerged Arc Welding, the production process of this spiral steel pipe adopts the steel strip coiled into a pipe, and then spiral submerged arc welding, which has the characteristics of high strength and corrosion resistance, and it is widely used in the fields of petroleum, natural gas, chemical, municipal, etc. Petroleum, natural gas, chemical, municipal and other fields.
2. ERW pipe: 'ERW' is the abbreviation of Electric Resistance Welding, that is, resistance welding, is a method of making steel pipe. The production speed of resistance welding pipe is faster and the cost is lower, but the toughness is a bit poor. 3.
3. LSAW pipe: 'LSAW' stands for Longitudinally Submerged Arc Welding, i.e. straight seam submerged arc welding. The manufacturing process of this kind of steel pipe is to shear the steel plate, then bend the steel plate into a pipe, and then carry out LSAW welding. LSAW steel pipe has the characteristics of high capacity, wide range of thicknesses, pressure resistance, corrosion resistance and so on.
4. SSAW-HSAW pipes: 'HSAW' is the abbreviation of Helically Submerged Arc Welding, i.e. Helical Seam Arc Welded Pipe, which has made some changes on the production method of SSAW pipes, and has the advantages of guaranteeing the quality of helical seam weld, ensuring the circularity of the annular wall and load-bearing capacity. The advantages of SSAW pipe are as follows
