What are the differences between seamless steel pipes and seamless steel pipes?

Today, the editor will talk to you about the differences between seamless steel pipes and seamless steel pipes?

1. The maximum usage pressure that seamless pipes can generally withstand is within 20 kilograms, which is the safe range of use. It is generally used for low-pressure fluids such as water, gas, compressed air, etc;

2. Seamless pipes can withstand ultra-high pressure, but their wall thickness will also increase accordingly, which requires design according to pressure requirements. It is generally used for high-temperature and high-pressure equipment such as high-pressure oil pipes and boiler pipes. There are also seamless pipes for structural use, it depends on the design requirements.

3. Currently, there are also some seamless steel pipes with welded joints that have undergone annealing treatment to eliminate residual stress in the weld seam, making it comparable to the base material and having a pressure bearing range similar to seamless pipes. You can also consider using it.

4. Of course, there are also some seamless steel pipes on the market that use seamless steel pipes that are heated as a whole and then pulled or rolled with a core head, mainly in small sizes. These pipes only belong to seamless pipes in terms of appearance, and their quality is not very good. Please pay attention!!

Seamless steel pipe is a long strip of steel with a hollow cross-section and no seams around it. Seamless steel pipe is made by piercing steel ingots or solid tubes into rough tubes, and then hot rolling, cold rolling or cold drawing them into hot-rolled tubes, cold-rolled tubes, cold drawn tubes, extruded tubes, and top tubes.

Welded steel pipe, also known as welded steel pipe, refers to a steel pipe that is bent and deformed into circular, square, or other shapes using steel strips or plates, and then welded to form a surface with joints. According to different welding methods, it can be divided into arc welded pipes, high-frequency or low-frequency resistance welded pipes, gas welded pipes, furnace welded pipes, Bondi pipes, etc. According to the shape of the weld seam, it can be divided into straight seam welded pipe and spiral welded pipe. Electric welded steel pipes are used in industries such as petroleum drilling and machinery manufacturing. Furnace welded pipes can be used as water and gas pipes, while large-diameter straight seam welded pipes are used for high-pressure oil and gas transportation; Spiral welded pipes are used for oil and gas transportation, pipe piles, bridge piers, etc. Welded steel pipes have lower costs and higher production efficiency than seamless steel pipes.