BS EN 1277:2004 Plastics piping systems - Thermoplastics piping systems for buried non-pressure applications - Test methods for leaktightness of elastomeric sealing ring type joints
2004BS EN 1277:2004 Plastics piping systems - Thermoplastics piping systems for buried non-pressure applications - Test methods for leaktightness of elastomeric sealing ring type joints
2004BS EN 1277:2003 Plastics piping systems - Thermoplastics piping systems for buried non-pressure applications - Test methods for leaktightness of elastomeric sealing ring type joints
1996BS EN 1053:1996 Plastics piping systems - Thermoplastics piping systems for non-pressure applications - Test methods for watertightness
1989BS 2782-11 Method 1112A:1989 Methods of testing plastics. Thermoplastics pipes, fittings and valves. Leaktightness of thermoplastics pipes and fittings for non-pressure applications