What Are The Differences Between Seamless Steel Pipes And Welded Pipes?

Seamless steel pipe manufacturers tell you about the difference between seamless steel pipe and welded pipe.1. The thickness of the high-precision cold drawn seamless steel pipe wall cover is relatively wide, and it can achieve small diameter and large wall thickness and large diameter and large wall thickness, but in general, the length is limited (only a small number of manufacturers can produce super long pipe). Relatively thinner, it can achieve large diameter and small wall thickness and small diameter and small wall thickness. In theory, how long the long roll is, and how long the welded pipe can produce. In general, the thicker it is, the more suitable the use of seamless steel pipe, the thinner the appropriate choice of welded pipe.

2. For the uniformity and concentricity of the wall thickness, the ssaw steel pipe is better than the seamless pipe. Because the thickness tolerance of the cold rolled sheet is relatively uniform, the deformation during the forming process is uniform. However, the welds are bulged. Different companies and specifications have different welding height requirements. In special cases, they can be welded first and then cold drawn or cold rolled. During the rolling process of seamless steel tubes, they are affected by equipment precision, material function and other factors. The problem of unevenness and concentricity, but the roundness is better than that of the welded pipe.

1. Function, the uniformity of the welded pipe is better, and the surface quality is better. The 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 on-line solid solution, uniform heat treatment, and more stable function. However, there are no heat treatment processes in the low-end welded pipes on the market, so the quality is very different. Seamless steel pipes are sampled in different directions on the same pipe, and their functions are different, and some may have large differences. When the seamless pipe is heat treated, there is uneven heating in the heat treatment of the bundle of heat pipes, and the cooling rate is inconsistent.
2. Corrosion resistance is appropriate. The weld has been heat treated to the material requirements. If there is no heat-treated welded pipe, the corrosion resistance is greatly reduced compared with the seamless steel pipe.
3. The production cost of welded pipes is lower and more environmentally friendly. A good welded pipe factory can do the right environment with the electronics factory.
4. The pressure is different. Under the same specifications, the seamless steel tube is subjected to higher pressure than the welded pipe.
5. The price is different. For the whole, seamless steel pipes are more expensive than welded pipes. However, it also has the following characteristics: if it is a thick-walled pipe, it is suitable to use a seamless steel pipe, and if it is a thin-walled pipe, a welded pipe is suitable.
6. Due to the different delivery period, the welded pipe is made of stainless steel plate, and the processing is relatively simple, so the delivery time is shorter. The seamless steel pipe should be from the beginning of the round steel, pierced and then subjected to multiple cold drawing/cold rolling processing, and then solution annealing and pickling to produce the product, and the production cycle is longer.

A worker from a steel pipe company, which is located in China.