Stainless steel industrial welded pipe is what we refer to as welded pipe for short. The strength of stainless steel welded pipe is generally lower than that of stainless steel seamless steel pipe commonly used steel or steel belt. The production process of stainless steel welded steel pipes is simple, high production efficiency, many types of specifications, less equipment investment, but the general strength is lower than stainless steel seamless steel pipes.
Since the 1930s, with the rapid development of excellent strip continuous rolling production and the advancement of welding and inspection skills, the quality of welds has been continuously improved, and the types and specifications of stainless steel welded steel pipes are increasing, especially in more and more areas. The heat exchange equipment has replaced stainless steel seamless steel tubes with stainless steel tubes, stainless steel decoration tubes, and stainless steel medium and low pressure fluid tubes.
With the rapid development of China's economic construction, the consumption of stainless steel welded pipes continues to increase, during which the demand for stainless steel pipes is also expanding, and the market prospects are promising. The market demand for stainless steel seamless pipes is manifested in basic industries, such as petroleum, chemicals, power generation, etc., and its demand accounts for one-third of the total cost of non-seamless pipes, as well as cars, shipbuilding, construction and environmental protection industries. Greater demand. Stainless steel welded tubes are mainly used in heat exchanger tubes, fluid tubes, pressure pipes, mechanical structure tubes, urban scenes, and other occupations, with annual consumption of about 700,000 tons.
The demand for industrial stainless steel welded pipe is relatively high, and the production process is sophisticated. China's annual industrial stainless steel welded pipe volume is about 150,000 tons, and some still need to be imported. From the perspective of domestic stainless steel tube products, the steel type is mainly austenitic steel; the types of production are: seamless steel tubes including cold drawn tubes, cold rolled tubes, hot extruded tubes, centrifugal casting tubes, and spinning tubes; welding reception Including: plasma welding, argon arc welding, submerged arc welding, light speed welding and high frequency welding, etc. The stainless steel pipes can basically cover the types and specifications of the countries in the world, and the specifications and types of stainless steel special-shaped pipes also reach 100 Above, the usefulness of products touches many areas of industrial and civil use. But overall, domestic stainless steel pipes have a certain distance from the market demand in terms of types, specifications and quantities.