Steel pipe is a relatively common pipe material. It can be divided into different types such as seamless pipe and welded pipe. So what is the difference between seamless pipe and welded pipe? Next, I will briefly introduce it to you.
First, What is the difference between seamless pipes and welded pipes?
1. Different processes
Seamless pipes are made of steel billets or solid tube blanks that are perforated and processed by hot rolling or cold rolling. Welded pipe is made by bending and welding steel plates or strips.
2. Different appearance
There are no seams on the surface of seamless steel pipes. There are generally welding seams on the surface of welded pipes.
3. Different wall thicknesses
The precision of seamless steel pipes is low and the wall thickness is relatively thick. The steel pipe of welded pipe has high precision and the wall thickness is usually thin.
4. Different raw materials
Seamless steel pipes use steel billets or solid tube blanks. Welded pipes use steel plates or strips.
5.Different performance
In terms of corrosion resistance, pressure bearing, high temperature resistance and other properties, seamless steel pipes are better than welded pipes.
6.Different prices
Seamless steel pipes are more expensive than welded pipes because the production process of seamless steel pipes is more complex and their costs are higher.
7.Different functions
Seamless steel pipes are generally used as pipelines for transporting fluids that require resistance to high pressure, high temperature and other special environments. Welded pipes are often used as low-pressure fluid transportation pipes.
Second, What should you pay attention to when purchasing seamless steel pipes?
1.When purchasing seamless steel pipes, everyone should check whether the specifications and models of seamless steel pipes meet the requirements. We can use a ruler to measure whether the length, curvature, wall thickness, etc. of the pipe are consistent with the product information. If there is an error, does it meet the requirements of relevant standards?
When purchasing seamless steel pipes, we need to pay attention to the quality of the steel pipes. For example, there should be no cracks, scars and other defects on the surface of the seamless steel pipes. Generally, formal and qualified seamless steel pipes have certificates. You can ask the merchant to produce the certificate and check whether the production date, batch number, factory name and other relevant information on the certificate are complete, etc.
The above is the difference between seamless pipe and welded pipe, if you want to know more about steel, contact us.
