

资质认证
- GB/T 5648-2008
- 扩口式管接头用B型螺母
- 2008-05-06
- 2008-11-01
- GB/T 5647-2008
- 扩口式管接头用A 型螺母
- 2008-05-06
- 2008-11-01
- GB/T 5646-2008
- 扩口式管接头管套
- 2008-05-06
- 2008-11-01
- GB/T 5645-2008
- 扩口式压力表管接头
- 2008-05-06
- 2008-11-01
- GB/T 5644-2008
- 扩口式过板弯通管接头
- 2008-05-06
- 2008-11-01
- GB/T 5643-2008
- 扩口式过板直通管接头
- 2008-05-06
- 2008-11-01
- GB/T 5642-2008
- 扩口式焊接管接头
- 2008-05-06
- 2008-11-01
- GB/T 5641-2008
- 扩口式四通管接头
- 2008-05-06
- 2008-11-01
- GB/T 5639-2008
- 扩口式三通管接头
- 2008-05-06
- 2008-11-01
- GB/T 5638-2008
- 扩口式组合三通管接头
- 2008-05-06
- 2008-11-01
- GB/T 5637-2008
- 扩口式可调向端弯通三通管接头
- 2008-05-06
- 2008-11-01
- GB/T 5635-2008
- 扩口式锥螺纹三通管接头
- 2008-05-06
- 2008-11-01
- GB/T 5634-2008
- 扩口式组合弯通三通管接头
- 2008-05-06
- 2008-11-01
- GB/T 5633-2008
- 扩口式可调向端三通管接头
- 2008-05-06
- 2008-11-01
- GB/T 5632-2008
- 扩口式组合弯通管接头
- 2008-05-06
- 2008-11-01
- GB/T 5631-2008
- 扩口式可调向端弯通管接头
- 2008-05-06
- 2008-11-01
- GB/T 5630-2008
- 扩口式弯通管接头
- 2008-05-06
- 2008-11-01
- GB/T 5629-2008
- 扩口式锥螺纹弯通管接头
- 2008-05-06
- 2008-11-01
- GB/T 5628-2008
- 扩口式直通管接头
- 2008-05-06
- 2008-11-01
- GB/T 5627-2008
- 扩口式锥螺纹长管接头
- 2008-05-06
- 2008-11-01