high pressure wire spiral hose 1.One to four steel wire spiral layers 2.ID: 1/4-4'' 3.ISO9001 4.Many attributes are optional a)It is made of internal rubber ,middle rubber ,2,4 or 6 layers of wire-wood,and external rubber . b) it is used in aerospace, petroleum chemical industry, mining electronics, mechanical shipbuilding, medical and health, light and electron, energy construction and so on. ...