T/ZZB 2570-2021 (English Version) PDF

Scope: This document specifies the terms and definitions, symbols and abbreviations, basic requirements, pipe classification, structural types and connection methods, technical requirements, inspection methods, inspection rules, and signs for polypropylene (PP) wrapped structural wall pipes for underground drainage and sewage. , transportation and storage, quality commitment. This document is applicable to winding structural wall pipes and pipe fittings (or solid wall pipe fittings) made of polypropylene (PP) resin as the main raw material, polymer material (generally polypropylene) as the auxiliary support structure, and processed by winding molding. ). This document applies to polypropylene (PP) wound structural wall pipes for pressureless buried drainage and sewage treatment with a long-term use temperature not exceeding 45°C. Taking into account the chemical resistance and temperature resistance of the material, it can also be used for pressureless buried industrial drainage and sewage pipes.

T/ZZB 2570-2021 history

2021 T/ZZB 2570-2021 Polypropylene (PP) spirally enwound structural-wall pipes for underground drainage and sewerage