In recent years, the development situation of the stainless steel welded pipe industry is relatively good, regardless of scale, quality, production technology, etc. have made great progress.

The demand field of stainless steel welded pipe is also gradually expanding. As the process of stainless steel welded pipe becomes mature, it can replace many products, such as: heat exchanger tubings, medium and low pressure boiler tubes, etc.

The production characteristics of stainless steel welded pipe are: less investment, fast construction, easy welding, wide product specification range, high dimensional accuracy, high yield, and so on. In the case of mass production, the cost of welded pipe is more than 20% lower than that of seamless pipe.

In recent years, the process of producing stainless steel pipes in China has been improved. After slitting and forming with cold-rolled coils according to the specifications, they are welded into tubes by multi-gun argon arc welding machines, and then cold rolled (drawn) to improve the performance of the weld The index can be basically consistent with the base material, and the product quality is significantly improved.

Stainless steel welded pipe production advantages:

First of all, in the production process of stainless steel welded pipe, the pipe body will be evenly squeezed, and then after bright solid melting annealing, the surface becomes very smooth and has the function of preventing scale. This is both conducive to heat dissipation and does not require frequent cleaning; Secondly, the welded pipe is a deep-processed product of the plate. Its advantage of uniform wall thickness is unparalleled, and it can be arbitrarily sized with high accuracy; Finally, the stainless steel welded pipe has the characteristics of corrosion resistance and long service life.

Replace “heat exchanger tubes” with stainless steel welded tubings:

The heat exchanger tube is an indispensable part of the tube-and-tube heat exchange equipment, and the heat exchanger tube is generally selected according to the pressure and the fluid medium.

One of the misunderstandings in the selection of heat exchanger tubes is that stainless steel welded tubes cannot be used as heat exchanger tubings. GB / 151-1999 clearly stipulates that the stainless steel welded pipe can be selected when the pipe side pressure is ≤6.4MPa. By now, the production process of stainless steel welded pipe can fully meet the needs of general heat exchanger tubes, and has demonstrated its unique advantages.

Since the heat exchanger tube constitutes the heat transfer surface of the heat exchanger, the size of the heat exchanger tube has a great influence on the heat transfer.

In order to ensure the heat transfer efficiency per unit area of the heat exchanger, a seamless tubes with small diameter are often used, but it has the problems that the tube is easy to scale and not easy to clean. If stainless steel welded pipe is used as the heat exchanger tube, this situation can be avoided because the stainless steel welded pipe has both good corrosion resistance and a smooth surface.