T/CPPIA 15-2022 Cross-linked polyethylene (PE-X) pipes for hot and cold water applications

Scope

Scope: This document specifies the use conditions, materials, product classification, requirements, inspection rules, and marking, packaging, transportation, and storage of cross-linked polyethylene (PE-X) pipes for cold and hot water, and describes the corresponding test methods. It also defines related terms and definitions, symbols, and abbreviations. This document applies to the design, production, inspection, sales, and assembly of cross-linked polyethylene (PE-X) pipes (hereinafter referred to as "pipes") for cold and hot water in building water supply and drainage systems (including industrial and civil cold and hot water, drinking water, and heating systems). Main technical content: 8.1 Color: The color of the pipes is generally uncolored, and other colors can be determined by mutual agreement between the supplier and the buyer. For barrier pipes, the colors of the barrier layer and adhesive should be visibly different from those of the PE-X material. If colorants are added to the barrier layer and adhesive layer, they should not affect the performance of the barrier layer and adhesive layer. 8.2 Appearance: The surface color of the pipes should be uniform and consistent, without obvious color differences. The inner and outer surfaces of the pipes should be smooth, flat, and clean, without obvious scratches, depressions, bubbles, impurities, or other surface defects that affect the performance of the product. The ends of the pipes should be cut flat and perpendicular to the axis. 8.3 Specifications and dimensions 8.3.1 The specifications of the pipes are represented by the pipe series S, the nominal outer diameter dn, and the nominal wall thickness en. Example: Pipe series S5, nominal outer diameter 32 mm, and nominal wall thickness 2.9 mm are represented as: S5 dn 32 × en 2.9. 8.3.2 The nominal outer diameter, average outer diameter, and the nominal wall thickness corresponding to the pipe series S (excluding the thickness of the barrier layer and adhesiv

Development Information

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