| 1. | Industrial valves - butt welding ends for steel valves
工业阀门.钢阀门的对接焊接端 |
| 2. | Valves - flanged , threaded and welding end
阀门.带法兰有螺纹和焊接端部 |
| 3. | Metal ball valves - flanged and butt - welding ends
对焊和法兰端金属球阀 |
| 4. | En 12627 industrial valves . butt welding ends for steel valves
工业阀门.钢阀门对焊末端 |
| 5. | Valves - socket weldings ends for steel valves
阀门.钢阀门的槽焊接端 |
| 6. | Valves - socket welding ends for steel valves
阀门.钢阀门的套节焊接端 |
| 7. | Valves flanged , threaded and welding end
带凸缘加螺纹和焊接端阀门 |
| 8. | Metal plug valves - flanged and welding ends
金属塞阀.法兰和焊接端 |
| 9. | Valves - socket welding ends for steel valves ; german version en 12760 : 1999
阀门.钢阀门的承口焊接端头 |
| 10. | Industrial pipework . steel components . butt welding ends . preparation
工业管道.钢制部件.对焊接端.准备 |
