NF T54-927*NF EN ISO 13263:2017 Thermoplastics piping systems for non-pressure underground drainage and sewerage - Thermoplastics fittings - Test method for impact strength
2017NF T54-927*NF EN ISO 13263:2017 Thermoplastics piping systems for non-pressure underground drainage and sewerage - Thermoplastics fittings - Test method for impact strength