Speaking of heat exchange tubes, I believe everyone is familiar with it. It is a device that can quickly transfer heat from one point to another, and it has almost no heat loss. Therefore, it is called a heat transfer superconductor and has a high Thermal conductivity and good isothermal properties, so it is usually used in heat exchangers as one of the components of the heat exchanger. The commonly used materials for heat exchange tubes are carbon steel, low alloy steel, stainless steel, copper, copper-nickel alloy, aluminum alloy, titanium, etc. In addition, there are some non-metallic materials, such as graphite, ceramics, and polytetrafluoroethylene, so When designing heat exchange tubes, you should choose appropriate materials according to working pressure, temperature and corrosiveness of the medium.

Stainless steel seamless pipe and stainless steel welded pipe belong to stainless steel pipe, but there is a difference between them. The difference between stainless steel seamless pipe and stainless steel welded pipe is mainly reflected in the following aspects:

1. Appearance comparison

(1) The seamless steel pipe is drawn in technology and has no welds.

2. Process comparison

(1) Stainless steel seamless pipe is a long strip of steel with a hollow section and no joints on the periphery. The thicker the wall thickness of the product, the more economical and practical it is; the thinner the wall thickness, its processing cost will rise substantially. The process of this product determines its limited performance. Generally, seamless steel pipes have low precision because of uneven wall thickness, low brightness on the inside and outside of the pipe, high cost of sizing, and there are pits on the inside and outside, and black spots are difficult to remove. , Its detection and shaping require offline processing. Therefore, the stainless steel seamless pipe reflects its superiority in terms of high pressure, high strength, and mechanical structure materials.

(2) Welded steel pipes are abbreviated as welded pipes, which are steel pipes made of commonly used steel or steel strips that are crimped and formed by the unit and die. With the rapid development of excellent strip continuous rolling production and the advancement of welding and inspection technology, its production process has become much simpler, production efficiency has also become higher, the quality of welds continues to improve, and the variety and specifications of welded steel pipes are increasing. In more and more fields, especially in heat exchange backup tubes, decorative tubes, medium and low pressure fluid tubes, etc., seamless steel pipes are replaced. However, everyone should pay attention to that the strength of welded steel pipes is generally lower than seamless steel pipes. .