| 1. | Specification for quality levels for steel valve castings
钢阀铸件的质量级规范 |
| 2. | Industrial valves - butt welding ends for steel valves
工业阀门.钢阀门的对接焊接端 |
| 3. | En 12627 industrial valves . butt welding ends for steel valves
工业阀门.钢阀门对焊末端 |
| 4. | Valves - socket weldings ends for steel valves
阀门.钢阀门的槽焊接端 |
| 5. | Valves - socket welding ends for steel valves
阀门.钢阀门的套节焊接端 |
| 6. | General requirements for industrial steel valves
钢制阀门一般要求 |
| 7. | Oil tempered carbon steel valve , spring quality wire , and springs
油回火碳素钢阀弹簧钢丝和弹簧 |
| 8. | Valves - socket welding ends for steel valves ; german version en 12760 : 1999
阀门.钢阀门的承口焊接端头 |
| 9. | Standard specification for chromium - vanadium alloy steel valve spring quality wire
阀簧级铬矾合金钢的标准规范 |
| 10. | Industrial valves - butt welding ends for steel valves ; german version en 12627 : 1999
工业阀门.钢阀门用对焊端头 |
