Submerged arc welded steel pipe: the core force in the field of oil and gas transportation
In the process of industrial construction, submerged arc welded steel pipe has become the backbone of energy transportation and structural construction with its excellent performance.
Submerged arc automatic welding technology is adopted for submerged arc welded steel pipe. By accurately controlling welding parameters and stable arc combustion, the weld quality is stable and reliable, so that the metal fusion at the weld is more uniform and compact, and the overall strength of steel pipe is greatly improved.
Internationally, the commonly used implementation standards for steel pipes in the oil and gas industry are American API standards, such as API PSL1/PSL2, etc., which cover steel grades such as L245, L290/X42, L360/X52, L485/X70, L555/X80, etc. These standards have strict regulations on the material, performance, size and other aspects of steel pipes, ensuring that steel pipes are at medium and high pressure. Huayang steel pipe can meet the requirements of these international standards in production and provide reliable guarantee for global energy transmission.
At home, we also strictly follow the national standards, such as GB/T 9711, whose quality requirements for steel pipes are in line with international standards, which also ensures the high-quality output of steel pipes.
In the field of natural gas transportation, steel pipes of L245, L290 and L360 have been widely used in major projects such as the West-East Gas Pipeline and the East China-Russia Line. Take the East China-Russia natural gas pipeline project as an example. The X80 pipeline steel pipe with a diameter of 1,422 mm was adopted in this project, which realized 100% localization, with a design pressure of 12 MPa and an annual gas transmission capacity of 38 billion cubic meters.
In order to ensure the quality of steel pipes, each submerged arc welded steel pipe production line in Huayang is equipped with two X-ray flaw detection equipment, two on-line ultrasonic flaw detection equipment and mechanical cold expanding equipment.
At the same time, Huayang has strict data tracking on the quality control of each link in the steel pipe production process, so that every steel pipe from Huayang can be traced back to its source. Huayang has powerful digital control technology to meet the needs of customers for visual factory inspection.
Huayang steel pipe, with excellent quality, sets an example for the industry and contributes to the global pipeline construction.
