fire hose coupling
1.Size : 1",1.5",1.75",2",2.5",3",4",5", and nominal diameter is 80mm,100mm
2.Type: storz, john morris, French, Gost, Spanish, American others are available
3.Material : aluminum or brass
4.Work pressure: 16Bar
5.Strength pressure:24Bar
6.Applicable media: water, foam