T/ZZB 1175-2019 One-step fusion interlocking hollow corrugated polyethylene molded pipe
T/ZZB 1175-2019 One-step fusion interlocking hollow corrugated polyethylene molded pipe
Basic Information
Scope
Main technical content: This standard specifies the terms and definitions, symbols, abbreviations, product grades and markings, basic requirements, structural types and connection methods, technical requirements, test methods, inspection rules, transportation, storage, and quality commitments for one-time molded hot-melt socket-fitting high-density polyethylene hollow-wound pipes. This standard applies to pipes made from polyethylene (PE100 grade) resin as the main raw material, which are molded into square pipes at 220°C, wound by spiral welding, and cast with a die to form a socket in one molding process. The pipes specified in this standard are suitable for long-term working temperatures below 45°C in underground drainage, sewage disposal, and other projects.