Year1
- 规格：
- 219-3500mm
- 规格：
- 6-28
Our factory specializes in producing various large-diameter thick-walled spiral steel pipes with complete materials, complete specifications and complete models. Integrity builds brand service and prepares the future. Our company has advanced American Lincoln welding machines, pipe end automatic flat head chamfering machines, optical ray flaw detectors, industrial TV ultrasonic flaw detectors, universal material testing machines, chemical composition analyzers and other equipment, and is equipped with professional technical operators. Complete testing equipment and advanced management models maintain a good social image and corporate honor. Providing high-quality products and perfect after-sales services is not only responsible for our company, but also responsible for our users and friends. The spiral steel pipe feeds the strip into the welded pipe unit and rolls the strip through multiple rollers to gradually roll it up to form a circular tube blank with an opening gap. Adjust the reduction amount of the extrusion roller to control the weld gap to ~ and make both ends of the weld Flush. .If the gap is too large, the proximity effect will reduce the eddy current, the heat will be insufficient, and the inter-crystal joint of the weld will be poor, resulting in lack of fusion or cracking. .If the gap is too small, the proximity effect will increase, the welding heat will be too high, causing the weld to burn, or the weld will form deep pits after extrusion and rolling, affecting the surface quality of the weld. After the two edges of the tube blank are heated to the welding temperature, they are squeezed by the extrusion roller to form common metal grains that penetrate and crystallize to form a strong weld. If the extrusion force of the spiral steel pipe is too small, the number of common crystals formed will be small, and the strength of the weld metal will decrease. Cracking will occur after stress is applied. If the extrusion force is too large, the molten metal will be squeezed out of the weld, which will not only reduce the strength of the weld but also It will produce a large number of internal and external burrs and even cause defects such as welding seams. Spiral Steel Pipe Process Features Spiral Steel Pipe Main Process Features
During the forming process, the steel plate deforms evenly, with small residual stress and no scratches on the surface. The processed spiral steel pipe has greater flexibility in the size range of diameter and wall thickness, especially in the production of high-grade thick-walled pipes, especially small and medium-diameter thick-walled pipes. It has advantages that other processes cannot match
Users have more requirements in terms of spiral steel pipe specifications.
Using advanced double-sided submerged arc welding technology, welding can be achieved at the best position and is less prone to defects such as wrong edges, welding deviations and incomplete penetration, and the welding quality can be easily controlled.
Performing % quality inspection on steel pipes ensures that the entire process of steel pipe production is under effective detection and monitoring to effectively ensure product quality. d
All equipment in the entire production line has the function of networking with the computer data acquisition system to realize real-time transmission of data from the central control room to the technical parameters in the production process. We serve our customers with the tenet of honesty and quality. We welcome new and old customers to our factory to discuss business.
Yu Xin
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