| 1. | Longitudinal electric resistance welded steel pipes for pump barrel
油井泵体用直缝电阻焊钢管 |
| 2. | On - line tube seam annealing unit
直缝焊钢管焊缝退火全套设备 |
| 3. | Vertical line perforation dropped
直缝漏齿 |
| 4. | Superaudio frequency induction heating equipment high - frequency induction heating equipment
直缝焊钢管焊缝退火全套设备 |
| 5. | Study on residual stress inspection of straight - line welded thick steel tube with large diameter
大口径厚壁埋弧直缝焊管内应力检测研究 |
| 6. | Analysis of the present competitive structure of the electric resistance welding market in china
我国直缝焊管市场现阶段的竞争结构分析 |
| 7. | Casing , drilling pipe , tubing , rod pipe , and welding pipes for petroleum industrial
套管、钻杆、油管、抽油杆、螺旋焊管、直缝焊管 |
| 8. | Study of the mechanical caliber enlargement process of longitudinally - welded pipe used for pipeline and the influence factors thereof
管线用直缝焊管机械扩径及其影响因素研究 |
| 9. | It ' s a product of high frequency tube welding unit with high efficiency and low energy consumption
150型电弧喷涂机是我公司针对直缝高频焊管机组研制开发的高效率、低能耗新一代产品。 |
| 10. | It ' s a product of high frequency tube welding unit with high efficiency and low energy consumption
150型电弧喷涂机是我公司针对直缝高频焊管焊缝修补研制开发的高效率、低能耗一代产品。 |
