High Strength ASTM A249 Stainless Steel Welded Tube For Heat Exchanger

With the widespread application of stainless steel welded pipe, the production of stainless steel welded pipe has made great progress in scale, quality, technology and other aspects, especially since its demand field is gradually expanding, in addition, with the increasingly mature stainless steel welded pipe process, many products can replace stainless steel seamless pipe, such as: heat exchanger tube, medium and low-pressure boiler tube.

Stainless steel welded pipe production features: light production equipment, less investment, fast construction speed, simple welding method, a wide range of product specifications, high dimensional accuracy, small wall thickness deviation, smooth surface, and high yield. In the case of mass production, welded pipe costs more than 20% less than seamless pipe. In recent years, the production process of stainless steel pipe has been adopted, after the cold-rolled coil is longitudinally cut and formed according to the requirements of the specifications, the pipe is welded by the multi-gun argon arc welding machine, and then the cold-rolled (drawn), so that the performance indicators of the weld can be basically consistent with the base metal, and the product quality is significantly improved. Therefore, the advantages of using stainless steel welded pipe instead of stainless steel seamless pipe are becoming more and more obvious.

Can welded tubes be used in heat exchange equipment?

1. The heat exchanger tube is an indispensable part of heat exchange equipment. The heat exchanger tube is usually selected according to pressure and fluid medium. When the pipe pressure is less than 6.4MPa, stainless steel welded pipe can be selected. Especially now the stainless steel welded pipe production process has been very mature, it can fully meet the needs of the general heat exchanger tube, and show its unique advantages.

2, The production process is mature, austenitic stainless steel welded pipe will become the first choice.

Since the heat exchange tubes constitute the heat transfer surface of the heat exchanger, the size of the heat exchange tubes has a great influence on heat transfer. When small diameter tubes are used, the heat exchange area per unit volume of the heat exchanger is larger, the equipment is relatively compact, the metal consumption per unit heat exchange area is small, and the heat transfer coefficient is also high. Austenitic stainless steel welded pipe has good corrosion resistance, smooth surface, high heat transfer coefficient, and mature production technology, so austenitic stainless steel welded pipe is the best choice for heat exchanger pipes.