What is a straight welded steel pipe?
Straight-seam steel pipe does not refer to a certain type of steel pipe, but a large class of welded pipes, which are made of steel belts. Steel pipes made of straight-seam high-frequency ultrasonic welding machine can be called straight-seam steel pipes. In fact, simply speaking, when welding steel plates, steel pipes with welds in the same straight line can be called straight-seam steel pipes.
According to different uses and subsequent production processes, it can be roughly divided into scaffold pipe, fluid pipe, wire sleeve, support pipe and guardrail tube. Low-pressure fluid welded pipe is a kind of longitudinal welded pipe. After welding, another water pressure test is conducted for water and gas transportation, so the price of low-pressure fluid pipe is usually higher than that of ordinary longitudinal welded pipe, such as 1 inch (DN25) (that is, 33.5 * 3.25) welded steel pipe. Welded with steel plate or steel strip, it can be divided into straight welded pipe and spiral welded pipe according to the weld form, and can be divided into ordinary welded pipe, galvanized welded pipe and oxygen blown welded pipe, wire sleeve, transformer pipe, thin-walled pipe welding, special-shaped pipe welding and spiral welded pipe according to the application.
Universal welded pipe: This kind of welded pipe is mainly used for conveying low-pressure liquid or fluid. Of course, in addition to these types of steel, there are some steels that are easy to weld and can be used to manufacture universal welded pipes. There are some requirements for surface quality. This kind of steel pipe has to undergo water pressure, bending, flattening and other tests.
Double-sided submerged arc straight-seam steel pipe is also a straight-seam steel pipe. Submerged arc straight-seam steel pipe adopts JCOE cold forming process, welding wire is used for welding seam, and particle flux is used for submerged arc welding. The main production process of submerged arc straight-seam steel pipe is flexible and can produce any specifications, with a wall thickness of 325~1420 mm, which can meet the requirements of customers for steel pipe size. Domestic standard production usually adopts high-frequency straight-seam steel pipe, which is usually called original steel pipe. The name of this industry is different from submerged arc straight-seam steel pipe or thermal expansion high-frequency straight-seam steel pipe.
Matters needing attention in the use of straight seam steel pipe：
The installation and use of straight-seam steel pipes have strict technological requirements, which need to be carried out according to the actual situation and operating procedures to ensure the quality. Before the use of straight-seam steel pipes, it is necessary to install straight-seam steel pipes, including electric welding machines, cutting machines, electric hammers and polishers, in order to excavate pipe trenches and complete the laying of pipe wells, and the installation can only begin after the equipment is ready.
The installation and use of straight-seam steel pipes have strict technological requirements, which need to be carried out according to the actual situation and operating procedures to ensure the quality. Before the use of straight-seam steel pipes, it is necessary to install straight-seam steel pipes, including electric welding machines, cutting machines, electric hammers and polishers, in order to excavate pipe trenches and complete the laying of pipe wells, and the installation can only begin after the equipment is ready.
The installation and use of straight-seam steel pipes have strict technological requirements, which need to be carried out according to the actual situation and operating procedures to ensure the quality. Before the use of straight-seam steel pipes, it is necessary to install straight-seam steel pipes, including electric welding machines, cutting machines, electric hammers and polishers, in order to excavate pipe trenches and complete the laying of pipe wells, and the installation can only begin after the equipment is ready.
The above is about the introduction of straight-seam steel pipe and matters needing attention in use. I hope the above content can help everyone.
