Technical Conditions of Seamless Steel Pipes for Different Purposes

1. Oil and gas pipeline: The inner diameter of the pipe should be between 60mm and 200mm, and the wall thickness should be between 6mm and 12mm. The material used should be high-quality steel, and the tensile strength should be no less than 235MPa.

2. Water supply and drainage pipeline: The inner diameter of the pipe should be between 15mm and 30mm, and the wall thickness should be between 3mm and 6mm. The material used should be carbon steel or low-alloy steel, and the tensile strength should be no less than 275MPa.

3. Telecommunications pipeline: The inner diameter of the pipe is usually small, and its wall thickness may be thin. It can be made of aluminum alloy or steel, and the tensile strength should be no less than 275MPa.

4. Pressure vessel: The inner diameter of the pipe may vary depending on the size of the pressure vessel, but the wall thickness should be relatively thick, usually between 8mm and 20mm. The material used should be high-quality steel or stainless steel, and the tensile strength should be no less than 590MPa.

5. Concrete reinforcing steel pipe: The inner diameter of the pipe is usually small, and its wall thickness is usually between 2mm and 5mm. It can be made of carbon steel or low-alloy steel, and the tensile strength should be no less than 330MPa.