Double submerged arc welded spiral steel pipe with its high-pressure capacity, small resistance, low-temperature resistance, corrosion resistance, easy installation, and maintenance, etc., is more and more in oil and gas, slurry transportation, urban construction, and other industries welcome.

Spiral double welding pipe  process

I. double submerged arc welding process, the plate deformation is uniformly small, residual stress, and the surface does not produce scratches. Processing of pipe diameter and wall thickness of the pipe sizes range, greater flexibility, especially in the production of high-grade steel thick-walled steel pipe, large diameter thick wall pipe has the incomparable advantage of other technology, to meet the users in pipe size requirements;

Ⅱ. Presoldering outside welding (fine welding) process can be implemented in the best position welding, less prone to the wrong side of the welding partial and incomplete penetration defects such as welding quality, easy to control;

Ⅲ. Overall mechanical enlarged diameter, which can effectively improve the dimensional accuracy of a steel pipe, and improve the distribution state of the stresses in the steel pipe, thus avoiding the damage caused due to stress corrosion, is also conducive to the welded construction of the scene;

Ⅳ. 100% quality check on the steel so that the whole process of pipe production is effective detection, and monitoring, to ensure the product quality of the SAW pipe;

Ⅴ. Entire production line equipment has networked with a computer data acquisition system to realize the real-time transmission of data, the quality of the technology in the production process parameters, and quality indicators adopted by the central control room.

Cangzhou Shenlong Pipe Manufacturing Co., Ltd. is a high-tech enterprise specializing in the manufacture and sales of straight-seam welded pipe and spiral steel pipe. The main products of the company are oil and gas bushing, tubing, pipeline pipe, pile pipe, structural pipe, etc., with an annual design capacity of 100,000 tons. The company's products execute API SPEC 5CT, API SPEC 5L, FM 1630, UL 852, JIS G3444, JIS G3452, ASTM A53/A53M, AS/NZS 1163, AS/NZS 1074, AS/NZS 1396, EN10217, EN10219, EN10255, and GB/T9711, GB/T3091, and other domestic and foreign standards. Products are exported to overseas markets and widely used in petroleum, natural gas, solar energy, shipbuilding, automobile, chemical, environmental protection, boiler, fire protection, water conservancy, electrical industry, machinery and equipment, steel structure, construction, and other industries.