1. Generally, large-diameter thin-walled steel pipes are used for transporting relatively low-pressure fluids such as water, gas, air, oil, and heating steam.
2. Ordinary carbon steel electrical conduit (GB3640-88) is a steel pipe used to protect electrical wires in industrial and civil buildings, and in electrical installation projects for machinery and equipment.
3. Large-diameter thin-walled steel pipes are steel pipes with weld seams parallel to the longitudinal direction of the pipe. They are usually classified as metric welded steel pipes, welded thin-walled steel pipes, transformer cooling oil pipes, etc.
4. Spiral submerged arc welded steel pipes for pressurized fluid transportation (SY5036-83) are spiral-seam steel pipes made from hot-rolled steel strip coils as pipe blanks, formed into a spiral at room temperature, and welded using double-sided submerged arc welding. These pipes have strong pressure-bearing capacity, good welding performance, and have undergone various rigorous scientific inspections and tests, ensuring safe and reliable use. They have large diameters, high transportation efficiency, and can save on pipeline laying investment. Mainly used for pipelines transporting oil and natural gas.
5. Spiral high-frequency welded steel pipe for pressurized fluid transportation (SY5038-83): Made from hot-rolled steel strip coils as pipe blanks, spirally formed at room temperature, and welded using the high-frequency lap welding method. It is used for transporting pressurized fluids. The steel pipe has strong pressure-bearing capacity, good plasticity, and is easy to weld and process. After various rigorous and scientific inspections and tests, it is safe and reliable in use. The steel pipe has a large diameter, high transportation efficiency, and can save on pipeline laying investment. Mainly used for laying pipelines transporting oil, natural gas, etc.
6. Spiral submerged arc welded steel pipe for general low-pressure fluid transportation (SY5037-83): Made from hot-rolled steel strip coils as pipe blanks, spirally formed at room temperature, and manufactured using double-sided automatic submerged arc welding or single-sided welding method. It is used for transporting general low-pressure fluids such as water, gas, air, and steam.
Post time: Jan-28-2026