This Malaysian Standard specifies the properties and performance requirements for flexible plastics tubing and hoses up to a nominal bore of 12.5 mm for use with commercial propane and butane and their mixtures thereof in the vapour phase in appliances, in environments between a minimum ambient temperature of -30 °C and a maximum ambient temperature of +60 °C. The tests detailed in this standard are also applicable to tubing and hoses which form part of an assembly, such as that used for connecting a cylinder to a regulator. NOTE. Flexible plastics tubing and hoses conforming to this standard may be used where contact with appliances having a maximum surface temperature of 90 °C may occur. This standard does not apply to rubber tubing and hoses. Refer to MS 773 Specification for flexible rubber tubing and hose for use in LPG vapour phase and LPG/air installations. This standard does not apply to hoses for welding purposes.