SS304 SS304L SS310S SS321 SS316 SS316L SS410 2507 2205 Seamless Welding Stainless Steel Pipe Tubing industrial engineering chemical equipment

Definition: Stainless steel welded pipe is a type of pipe made by rolling a steel plate or strip into a shape and then welding it together. Classification

According to the type of weld: it can be divided into straight seam welded pipes and spiral welded pipes. The welds of straight seam welded pipes are in a straight line shape, and the production process is relatively simple with high production efficiency, suitable for large-diameter and medium-low pressure pipeline systems; the welds of spiral welded pipes are in a spiral shape. They have higher strength and good sealing performance, and are often used in high-pressure, large-diameter long-distance pipelines.

Manufacturing process

Material selection: High-quality stainless steel sheets are selected and undergo strict quality inspections, including chemical composition analysis and mechanical performance tests, to ensure that the raw materials meet the product requirements.

Forming: After the stainless steel sheets undergo pre-treatment such as unwinding, flattening, and trimming, they are rolled into the required tubular shape using forming equipment. Common forming methods include UOE forming, continuous tube forming machine forming, and spiral welded pipe machine forming, etc.

Welding: Appropriate welding methods are used to weld the formed pipe blanks, such as plasma welding, laser welding, and argon arc welding, to ensure that the weld seams are firm and uniform, and to guarantee the sealing and strength of the pipeline.

Post-processing: After welding, a series of post-processing procedures are carried out on the welded pipes, such as internal and external weld seam leveling treatment, online solution treatment and belt-type annealing furnace treatment, continuous shaping, infrared diameter measurement, polishing, acid washing and passivation, etc., to improve the surface quality, dimensional accuracy and comprehensive performance of the welded pipes.

ASME SA312 TP310S Stainless Pipes Inspection

ASME SA312 TP310S Stainless Pipes Inspection Measuring

Additional services of Zhongzheng

ZHONG ZHENG will update the latest prices of stainless steel pipes, including seamless and welded stainless steel pipes of ASTM A312 and ASTM A213. We will update it on our website every month, hoping it can help you have a better understanding of the Chinese market. We also provide additional services to assist you in inspecting and verifying the factories and products in China. 

We sincerely hope that Zhongzheng Stainless Steel can become a good partner for your purchase of stainless steel pipes in China. 

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