Do You Know These Eight Knowledge of Seamless Steel Pipe?

(1) The thickness of thecarbon steel seamless pipe is relatively large, which can achieve small diameter and large wall thickness and large diameter and large wall thickness, but the length is generally limited (only a few manufacturers can Production of ultra-long pipes); stainless steel welded pipe wall thickness can be relatively thin, can achieve large diameter small wall thickness and small diameter small wall thickness. Generally speaking, the thicker is suitable for seamless pipe, the thinner is suitable for welding pipe.

(2) In terms of wall thickness uniformity and concentricity, stainless steel welded pipes are better than stainless steel seamless pipes. Because the thickness tolerance of the cold-rolled sheet is relatively uniform, the deformation during the forming process is uniform. However, the welding seam is protruding, and different companies and specifications have different welding height requirements. In special cases, it can be welded before cold drawing or cold rolling. The seamless tube rolling process is affected by factors such as equipment accuracy and material function, and has a thickness The problem of unevenness and concentricity, but roundness is better than welded pipe.

(3) Function, better uniformity and better surface quality of stainless steel welded pipe Expansion tube function is better. The uniformity of the function of the cold-rolled sheet is better than that of the pipe, and the welded pipe generally uses online solid solution, heat treatment is uniform, and the function is more stable. But now there are no heat treatment procedures for the low-end stainless steel welded pipes on the market, so the quality varies greatly. Stainless steel seamless pipes are sampled from different directions on the same pipe, the functions are different, and some may differ greatly. During the heat treatment of seamless pipes, there are uneven heating and inconsistent cooling rates during the treatment of bundled heat pipes.

Carbon Steel Seamless Pipe

(4) The corrosion resistance is proper. After welding, the weld has reached the material requirements. If there is no heat-treated stainless steel welded pipe, the corrosion resistance will be significantly lower than that of stainless steel seamless pipe.

(5) The production cost of welded pipe is lower and environmental protection. A good welded pipe factory can be as appropriate as the factory environment of an electronics factory; a seamless pipe factory is full of oil and lubricants, and the pickling environment is even worse.

(6) Different pressures. Under the same specifications, stainless steel seamless pipes withstand higher pressure than welded pipes.

(7) The prices are different. Overall, stainless steel seamless pipes are more expensive than welded pipes. However, it also has the following characteristics: if it is a thick-walled pipe, a seamless pipe is suitable, and if it is a thin-walled pipe, a welded pipe is suitable.

(8) The delivery cycle is different. Because the stainless steel welded pipe is made of stainless steel coil, the processing is relatively simple, so the delivery time is shorter. Stainless steel seamless pipes need to start from round steel, and then pass through multiple cold drawing / cold rolling processes after perforation, and then solution annealing and pickling to produce products. The production cycle is longer.

We are carbon steel seamless pipe manufacturer. If you have a demand for our products, please feel free to contact us.