The use of seamless steel pipe is very wide, some of the pipeline to transport liquid or some parts, are made with it. And whether it is from the performance, or life point of view, are much stronger than the welded steel pipe. In some chemical industry, machinery and equipment industry, water conservancy industry can see the figure of seamless steel pipe.
The steel pipe is made of steel ingot or solid tube through the perforated tube, and then made by hot rolling, cold rolling or cold blowing. The specifications of the seamless steel pipe are indicated by the outer diameter * wall thickness mm. Seamless steel pipe hot rolling and cold rolling (dial) seamless steel pipe two categories. Hot-rolled seamless steel pipe sub-general steel pipe, low, medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, oil cracking pipe, geological pipe and other steel pipe. In addition to the general steel pipe, low pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, oil cracking pipe, other steel pipe, but also include carbon thin-walled steel pipe, alloy thin-walled steel pipe, Stainless steel pipe, shaped steel pipe.
Welded steel pipe is a very common steel pipe, it uses the welding method, the two steel pipe together. However, with the continuous development of steel pipe production and innovation, there has been a new type, no welding of steel pipe - seamless steel pipe. The seamless steel pipe is made after cold rolling and hot rolling. Although today's welding technology is very superb, but more companies and manufacturers prefer to choose this simple, convenient seamless steel pipe, to replace the original need to weld the pipe.
1. Appearance, seamless steel pipe and welded steel pipe in the wall of the difference between the weld, and seamless no.
2. Seamless tube pressure is higher, the pipe is generally about 10 mpa, and now the pipe has to do seamless treatment.
3. Seamless steel pipe is formed in the rolling. Welded steel pipe needs to be welded after welding, generally spiral welding and direct welding. Performance seamless tube to be better, of course, the price is also higher.
4. Industrial seamless pipe is the use of tube for 20 a few processes cold drawn (rolling) made of welded pipe is used steel or steel plate by automatic welding or manual welding.
So, to understand the difference between seamless steel pipe and welded steel pipe, you know it was used in what aspects of the.