JIS K 6333:1999

This Standard specifies the requirements for rubber hoses (including twin hoses) for welding, cutting and allied processes and for low pressure (limited to the hoses for maximum working pressure up to 1 MPa and with nominal diameter less than or equal to 6.3 mm) and intermediate pressure (the hoses for maximum working pressure up to 2MPa and with all nominal diameters).This Standard shall not be applied to plastic hoses. Different colours and markings shall be specified for identification of the gas used.