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This European Standard specifies requirements for rubber hoses, including twin hoses and fluxed fuel gas hoses for welding, cutting and allied processes. The term "allied processes" means, in particular, heating, brazing and metallization. This standard specifies requirements for rubber hoses for normal duty up to 2 MPa (20 bar) and light duty [limited to hoses for maximum operating pressure up to 1 MPa (10 bar) and with nominal bore less than or equal to 6,3 mm]. This standard pertains to hoses operated at temperatures - 20 °C to + 60 °C. Thermoplastic hoses specified in EN 1327 are excluded from this standard. Different colours and markings are specified for identification of the gas. NOTE If hoses for liquefied petrol gases are used without regulators the use of light duty rubber hoses is not allowed. This standard applies to hoses used in: -- gas welding and cutting; -- arc welding under the protection of an inert or active gas; -- processes allied to welding and cutting; and assembled according to EN 1256. Hose connections for the manufacture of hose lines see EN 560. This standard does not apply to hoses used for high pressure acetylene [more than 0,15 MPa (1,5 bar)].