How to check the quality of large-diameter thin-walled steel pipes

1. Generally, large-diameter thin-walled steel pipes are used for the transportation of generally lower-pressure fluids such as water, gas, air, oil, and heating steam.

2. Ordinary carbon steel wire casing (GB3640-88) is a steel pipe used to protect wires in electrical installation projects such as industrial and civil buildings and installation of machinery and equipment.

3. Large-diameter thin-walled steel pipes are steel pipes in which the weld seam is parallel to the longitudinal direction of the steel pipe. Usually divided into metric electric welded pipes, electric welded thin-walled pipes, transformer cooling oil pipes, etc.

4. Spiral submerged arc welded pipe for pressure fluid transportation (SY5036-83) is a spiral submerged arc welded pipe used for pressure fluid transportation. It is made of hot-rolled steel strip coils and spirally formed at regular temperatures. It is welded by double-sided submerged arc welding. Sewing steel pipe. Steel pipes have strong pressure-bearing capacity and good welding performance. They have undergone various rigorous scientific inspections and tests and are safe and reliable to use. The steel pipe has a large diameter, high transportation efficiency, and can save investment in laying pipelines. Mainly used for pipelines transporting oil and natural gas.

5. Spiral seam high-frequency welded pipe (SY5038-83) for large-diameter thin-walled steel pipes for pressure fluid transportation is made of hot-rolled steel strip coils as pipe blanks, which are spirally formed at regular temperatures and welded by high-frequency lap welding. It is used Spiral seam high-frequency welded steel pipe for pressure fluid transportation. Steel pipes have strong pressure-bearing capacity, and good plasticity, and are easy to weld and process. After various strict and scientific inspections and tests, they are safe and reliable to use. The steel pipes have large diameters, high transportation efficiency, and can save investment in laying pipelines. Mainly used for laying pipelines transporting oil, natural gas, etc.

6. Generally, the spiral submerged arc welded steel pipe (SY5037-83) used for low-pressure fluid transportation is made of hot-rolled steel strip coils as pipe blanks, spirally formed at a constant temperature, and made by double-sided automatic submerged arc welding or single-sided welding. Submerged arc welded steel pipes are used for transporting general low-pressure fluids such as water, gas, air, and steam.


Post time: Jan-16-2024

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