| Nominal Diameter DN | Outer Diameter/mm | Wall Thickness/mm |
|---|---|---|
| 10 | 17 | 1.2, 1.6, 2.0, 2.5, 3.2, 3.5 |
| 15 | 22 | 1.6, 2.0, 2.5, 3.0, 4.0 |
| 20 | 27 | 1.6, 2.0, 2.5, 3.0, 4.0, 5.5 |
| 25 | 34 | 1.6, 2.8, 3.0, 3.5, 4.5, 6.5 |
| 32 | 42 | 1.6, 2.8, 3.0, 3.5, 5.0, 6.5 |
| 40 | 48 | 1.6, 2.8, 3.0, 4.0, 5.0, 7.0 |
| 50 | 60 | 1.6, 2.8, 3.5, 4.0, 5.0, 5.5, 7.0, 8.5, 11.0 |
| 65 | 76 | 2.0, 3.0, 3.5, 4.5, 5.0, 6.0, 7.0, 8.0, 9.5, 14.0 |
| 80 | 89 | 2.0, 3.0, 4.0, 4.5, 5.5, 6.5, 7.5, 9.0, 11.0, 15.0 |
| 100 | 114 | 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.5, 11.0, 14.0, 17.0 |
| 125 | 140 | 2.0, 3.5, 5.0, 6.5, 8.0, 9.5, 13.0, 16.0, 19.0 |
| 150 | 168 | 2.8, 3.5, 5.0, 5.5, 7.0, 9.5, 11.0, 14.0, 18.0, 22.0 |
| 200 | 219 | 2.8, 4.0, 6.5, 7.0, 8.0, 10.0, 13.0, 15.0, 18.0, 20.0, 24.0 |
| 250 | 273 | 3.5, 4.0, 6.5, 8.0, 9.5, 13.0, 15.0, 18.0, 22.0 |
Characteristics:
Application fields:
Petroleum and natural gas industry: It is used in long-distance pipelines for transporting petroleum and natural gas. Due to the complex underground and seabed environments, there are high requirements for the strength, sealing performance and corrosion resistance of pipelines, and seamless steel pipes are the ideal choice.
Mechanical manufacturing industry: It is used to manufacture mechanical parts, such as transmission shafts, hydraulic cylinders and so on. For example, in construction machinery, seamless steel pipes can be used to make hydraulic cylinders in the working devices of loaders, excavators and other equipment.
Automobile manufacturing industry: It is used for automobile parts, such as vehicle frames, exhaust pipes and so on. The vehicle frame requires relatively high strength to ensure the safety of the vehicle, and seamless steel pipes can meet this requirement.
Aerospace field: It is applied in components such as aircraft landing gears and hydraulic systems. Because aerospace equipment has extremely high requirements for the performance and quality of materials, the characteristics of seamless steel pipes, such as high strength and high precision, enable them to play a role in these key parts.
