scope:

This International Standard specifies requirements for six types of rubber hose for compressed air as follows: Type A - Industrial air hose for a maximum working pressure of 1,0 MPa (10 bar). Type B - Air hose for mining and construction work and maximum working pressure of 1,0 MPa (10 bar). Type B1 - Air hose for mining, other than coal mining, and construction work, maximum working pressure of 1,0 MPa (10 bar) and having good oil resistance. Type C - Air hose for mining and construction work and maximum working pressure of 1,6 MPa (16 bar). Type D - Air hose for mining and construction work and maximum working pressure of 2,5 MPa (25 bar). Type D1 - Air hose for mining, other than coal mining, and construction work, maximum working pressure of 2,5 MPa (25 bar) and having good oil resistance. For Type A hoses, the ratios of proof and minimum burst pressures to design working pressure are in accordance with ISO 7751 Service Type No. 3. For Type B, B1, C, D and D1 hoses the ratios of proof and minimum burst pressures to design working pressure are in accordance with ISO 7751 Service Type No. 4.