Spiral steel pipe is a spiral seam steel pipe made of strip steel coil as raw material, extruded at regular temperature, and welded by automatic double-wire double-sided submerged arc welding process. The spiral steel pipe sends the strip steel into the welded pipe unit, and the strip steel is rolled up gradually after rolling by multiple rollers to form a circular tube billet with an opening gap. Adjust the reduction of the extrusion roller to control the weld gap at 1~ 3mm, and make both ends of the welding port flush.
Main process characteristics of spiral steel pipe:
a. During the forming process, the deformation of the steel plate is uniform, the residual stress is small, and the surface does not produce scratches.
b. Using advanced double-sided submerged arc welding technology, welding can be realized at the best position, and it is not easy to have defects such as misalignment, welding deviation and incomplete penetration, and it is easy to control the welding quality.
c. Carry out 100% quality inspection of steel pipes, so that the whole process of steel pipe production is under effective inspection and monitoring.
d. All the equipment of the entire production line has the function of networking with the computer data acquisition system to realize real-time data transmission, and the technical parameters in the production process are checked by the central control room.
Spiral steel pipe use:
Spiral steel pipes are mainly used in water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction.
Used for liquid transportation: water supply and drainage.
For gas transportation: gas, steam, liquefied petroleum gas.
For structural purposes: as piling pipes, as bridges; pipes for wharves, roads, building structures, etc.