Steel pipes are divided into seam steel pipes and seamless steel pipes. What are their characteristics?
Seamless steel pipe is a round, square and rectangular steel with a hollow section and no joints on the periphery. Seamless steel pipes are made of steel ingots or solid tube billets through perforation into capillary tubes, and then made by hot rolling, cold rolling or cold drawing. Seamless steel pipes have a hollow section and are mostly used as pipelines for conveying fluids. Compared with solid steel such as round steel, steel pipes have the same bending and torsion strength and lighter weight. They are economical cross-section steels and are widely used in manufacturing structures. Parts and mechanical parts, such as oil drill pipes, automobile drive shafts, bicycle frames, and steel scaffolding used in construction.
Seamless steel pipe production process: hot-rolled, hot-expanded, cold-drawn, cold-rolled, and centrifugal cast seamless steel pipe. Specification of seamless steel pipe: 8-1240×1-200mm.
Seam steel pipes and seamless steel pipes are divided according to the form of processing, and seam steel pipes are generally welded.
Welded steel tubes refer to steel pipes with seams on the surface that are welded after bending and deforming steel strips or steel plates into round or square shapes. The billet used for welded steel pipe is steel plate or strip steel. According to different welding methods, it can be divided into arc welded pipe, high frequency or low frequency resistance welded pipe, gas welded pipe, furnace welded pipe, Bondi pipe, etc.
The difference of seamless steel pipe and seam steel pipe
1. Different appearance:
Seamed steel pipes have weld bars on the inner wall of the welded pipe; while seamless steel pipes have no weld bars on the inner wall of the welded pipe
2. The pressure is different:
The seamed steel pipe is about 10 MPa; while the pressure of the seamless steel pipe is relatively high.
3. Different uses:
Seamed steel pipes are mainly used in the construction industry; while seamless pipes are mainly used in the machinery industry.
4. The process is different:
Seamed steel pipes need to be rolled and welded; while seamless steel pipes are formed in one pass during rolling.
The difference between seamless steel pipe and seam steel pipe:
1. The maximum working pressure that the seamed pipe can generally withstand is within 20 kg, which is the safest range of use. It is generally used for water, gas, compressed air and other low-pressure fluids:
2. The seamless pipe can withstand ultra-high pressure, and of course its wall thickness will increase accordingly, which needs to be designed according to the pressure requirements. It is generally used in high-temperature and high-pressure equipment such as high-pressure oil pipes and boiler pipes.
Seamless steel pipe is a round, square and rectangular steel with a hollow section and no joints on the periphery. Seamless steel pipes are made of steel ingots or solid tube billets through perforation into capillary tubes, and then made by hot rolling, cold rolling or cold drawing. Seamless steel pipes have a hollow section and are mostly used as pipelines for conveying fluids. Compared with solid steel such as round steel, steel pipes have the same bending and torsion strength and lighter weight. They are economical cross-section steels and are widely used in manufacturing structures. Parts and mechanical parts, such as oil drill pipes, automobile drive shafts, bicycle frames, and steel scaffolding used in construction.
Seamless steel pipe production process: hot-rolled, hot-expanded, cold-drawn, cold-rolled, and centrifugal cast seamless steel pipe. Specification of seamless steel pipe: 8-1240×1-200mm.
Seam steel pipes and seamless steel pipes are divided according to the form of processing, and seam steel pipes are generally welded.
Welded steel tubes refer to steel pipes with seams on the surface that are welded after bending and deforming steel strips or steel plates into round or square shapes. The billet used for welded steel pipe is steel plate or strip steel. According to different welding methods, it can be divided into arc welded pipe, high frequency or low frequency resistance welded pipe, gas welded pipe, furnace welded pipe, Bondi pipe, etc.
The difference of seamless steel pipe and seam steel pipe
1. Different appearance:
Seamed steel pipes have weld bars on the inner wall of the welded pipe; while seamless steel pipes have no weld bars on the inner wall of the welded pipe
2. The pressure is different:
The seamed steel pipe is about 10 MPa; while the pressure of the seamless steel pipe is relatively high.
3. Different uses:
Seamed steel pipes are mainly used in the construction industry; while seamless pipes are mainly used in the machinery industry.
4. The process is different:
Seamed steel pipes need to be rolled and welded; while seamless steel pipes are formed in one pass during rolling.
The difference between seamless steel pipe and seam steel pipe:
1. The maximum working pressure that the seamed pipe can generally withstand is within 20 kg, which is the safest range of use. It is generally used for water, gas, compressed air and other low-pressure fluids:
2. The seamless pipe can withstand ultra-high pressure, and of course its wall thickness will increase accordingly, which needs to be designed according to the pressure requirements. It is generally used in high-temperature and high-pressure equipment such as high-pressure oil pipes and boiler pipes.
