| 1. | Galvanized welded steel pipe for low pressure service
低压流体输送用镀锌焊接钢管 |
| 2. | Welded steel pipe for supporting roller of belt conveyer
带式输送机托辊用电焊钢管 |
| 3. | Ultrasonic examination for arc welded steel pipes
电弧焊钢管的超声波探伤检验 |
| 4. | Hubbed socket welding steel pipe flanges with raised face
突面带颈承插焊钢制管法兰 |
| 5. | Specification for p3 . 0mpa welded steel pipe flanges
P3 . 0mpa焊接钢法兰规范 |
| 6. | Welded steel pipe for low pressure liquid delively
低压流体输送用焊接钢管 |
| 7. | Hubbed slip - on - welding steel pipe flanges with ring - joint face
环连接面带颈平焊钢制管法兰 |
| 8. | Hubbed socket welding steel pipe flanges with ring - joint face
环连接面带颈承插焊钢制管法兰 |
| 9. | Spiral submerged - arc welded steel pipe for municipal heat supply
城市供热用螺旋缝埋弧焊钢管 |
| 10. | Major diameter welded steel pipe for lowpressure liquid service
低压流体输送用大直径电焊钢管 |
