BLACK STEEL COUPLING
| Name： | Full and half black steel merchant coupling |
| Specification： | 1/8"-6" |
| Executive Standard： |
American Standard：ASTM A865 British Standard：BS EN10241 Din Standard：DIN 2999 |
| Name： | Full and half black steel merchant coupling |
| Specification： | 1/8"-6" |
| Executive Standard： |
American Standard：ASTM A865 British Standard：BS EN10241 Din Standard：DIN 2999 |
