Argon arc welding stainless steel welded pipe process: raw material uncoiling-smoothing-end shearing and welding-looper-forming-welding-internal and external welding bead removal-pre-correction-induction heat treatment-sizing Straightening-eddy current testing-cutting-hydraulic inspection-pickling-final inspection (strictly checked)-packaging-shipping.

With the rapid development of excellent strip continuous rolling production and the advancement of welding inspection technology, the quality of welds is continuously improved, the types of welded steel pipes are continuously increased, and there are more areas for the replacement of seamless steel pipes. The production process of straight seam stainless steel welded pipe is simple, high production efficiency, low cost and rapid development. The strength of spiral stainless steel welded pipe is generally higher than that of straight seam welded pipe. It can produce stainless steel welded pipes with large diameter and narrow blanks, and can also produce stainless steel welded pipes with different diameters and the same width. However, compared with straight pipes of the same length, the welding length is increased by 30% to 100%, and the production speed is low.

First of all, in the forming process of stainless steel welded pipe, the steel plate is deformed uniformly, the residual stress is small, and the surface is not scratched. The processed stainless steel welded 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, which has advantages over other processes. And can satisfy users. The specification of stainless steel welded pipe is higher; using the internal and external welding (finishing) process before the first welding, it can be welded in a better position, and it is not prone to defects welding deviation and non-weld penetration defects, if the overall mechanical diameter is expanded, it can effectively improve stainless Dimensional accuracy of welded pipe, improve the stress distribution of stainless steel welded pipe, avoid damage caused by stress corrosion, and facilitate on-site welding construction; conduct 9 items of 100% quality inspection on stainless steel welded pipe, so that the entire process of stainless steel welded pipe production is monitored under effective detection Guaranteed product quality.

Argon arc welding stainless steel welded pipe is widely used in water supply engineering, petrochemical industry, chemical industry, power industry, agricultural irrigation, urban construction is one of the 20 key products developed in China.