BS ISO 13267:2022 Thermoplastics piping systems for non - pressure underground drainage and sewerage — Thermoplastics inspection chamber and manhole bases — Test methods for buckling resistance
1970BS ISO 13267:2022 Thermoplastics piping systems for non - pressure underground drainage and sewerage — Thermoplastics inspection chamber and manhole bases — Test methods for buckling resistance
2010BS ISO 13267:2010 Thermoplastics piping systems for non-pressure underground drainage and sewerage - Thermoplastics inspection chamber and manhole bases - Test methods for buckling resistance