T/GZHG 001-2007 Low-rise building indoor rigid polyvinyl chloride (PVC-U) drainage pipe

Scope

Indoor Hard Polyvinyl Chloride (PVC-U) Drainage Pipes for Low-rise Buildings 1 Scope This standard specifies the materials, technical requirements, test methods, inspection rules, and marking, transportation, and storage for indoor hard polyvinyl chloride (PVC-U) drainage pipes in low-rise buildings. This standard applies to hard PVC-U drainage pipes used indoors in low-rise buildings (less than 27 meters in height). 2 Normative References The following documents are essential for the application of this document. For dated references, only the version dated at the time applies to this document. For undated references, the latest version (including all amendments) applies to this document. GB/T 1033.1 Test Methods for Density and Relative Density of Plastics Vertical shrinkage rate (%) ≤ 5 Tensile yield strength (MPa) ≥ 20 Impact test with a drop hammer (at 0°C ± 2°C) 8/10 pass Lead content (mg/kg) ≤ 1000 5 Test Methods 5.1 Test Conditions Unless otherwise specified in environmental tests or relevant standards, the tests shall be conducted in accordance with the provisions of GB/T 2918, with a state adjustment time of not less than 24 hours. 5.2 Appearance Visual inspection under natural light. 5.3 e) When the national quality supervision authorities require type testing. 6.3.2 Type Testing Items All items in this standard are subject to type testing. 6.4 Judging Rules 6.5.1 Judging of Factory Inspection If any of the inspection items in 4.1, 4.2, and 4.3 do not meet the requirements of Table 4, the batch is deemed unqualified. If the impact test with a drop hammer fails to meet the indicators, double the number of samples from the batch shall be randomly selected for reinspection. If the results of the reinspection are all qualified, the batch is deemed qualified. 6.5.2 Judging of Type Testing If one of the type testing items is unqualified, double the number of samples from the retained samples shall be randomly s

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