Spiral Steel Pipe

　　Spiral Steel Pipe is a spiral seam steel pipe,which is made of strip steel coil as raw material,often warm extruded and welded by automatic double wire double side submerged arc welding process.The spiral steel pipe sends the strip steel to the welding pipe unit,and after being rolled by multiple rolls,the strip steel gradually rolls up to form a round billet with an open gap.Adjust the reduction of the extrusion roll to control the weld gap at 1~3mm,and make both ends of the weld crater flush.

 

　　Main process characteristics of Spiral Steel Pipe:

 

　　a.During the forming process,the steel plate has uniform deformation,small residual stress and no scratch on the surface.The processed Spiral Steel Pipe has greater flexibility in the size and specification range of diameter and wall thickness,especially in the production of high steel grade thick wall pipes,especially medium and small caliber thick wall pipes.It has advantages that other processes cannot match,and can meet more requirements of users in the specification of Spiral Steel Pipe.

 

　　b.The advanced double-sided submerged arc welding process is adopted,which can realize welding at the best position.It is not easy to have defects such as staggered edges,welding deviation and incomplete penetration,and it is easy to control the welding quality.

 

　　c.100%quality inspection is carried out for steel pipes,so that the whole process of steel pipe production is under effective detection and monitoring,and the product quality is effectively guaranteed.

 

　　d.All equipment of the whole production line has the function of networking with the computer data acquisition system to realize real-time data transmission,and the central control room is responsible for the technical parameters in the production process.