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supply fire hose coupling according to your requirements 1. nominal diameter: 40mm,50mm,65mm,75mm
2. working pressure:12bar,16bar ....
3. type: American type coupling, German type coupling,British type coupling
4. material : aluminum,brass
5. size: 1",1.5",2",2.5",3",4"
6.other: chromeplate
Machino Coupling (Al material)