TCVN 6149-4-2009 Thermoplastics pipes, fittings and assemblies for the conveyance of fluids.Determination of the resistance to internal pressure.Part 4: Preparation of assemblies
2009TCVN 6149-4-2009 Thermoplastics pipes, fittings and assemblies for the conveyance of fluids.Determination of the resistance to internal pressure.Part 4: Preparation of assemblies