T/GZHG 013-2022 Nanomodified High Density Polyethylene (MUHDPE) Alloy Sewer Pipe

Scope

Main Technical Content: 5. Technical Requirements 5.1 The colors of the inner and outer layers of the color-coated pipes shall be uniform and consistent, with the color generally being green, which can be agreed upon by both the supplier and the purchaser. 5.2 The appearance of the nano-modified high-density polyethylene (MUHDPE) alloy drainage pipes should be smooth and flat, with no air bubbles, cracks, obvious scratches, depressions, or discoloration lines. Ventilation grooves are not allowed. The end face of the casing should be cut flat and perpendicular to the axis. 5.3 Length The length of the nano-modified high-density polyethylene (MUHDPE) alloy drainage pipes is generally 6m, which can also be agreed upon by both the supplier and the purchaser. The length of the casing should include the length of the socket. The length tolerance is ±0.5% of the total length. 5.4 Dimensions The dimensions of the pipes shall comply with Table 1, and the minimum average inner diameter of the socket shall not be less than the maximum average outer diameter of the pipes. **Table 1: Pipe Dimensions** Unit: mm **Inner Diameter** **Nominal Size (DN/ID)** **Minimum Average Inner Diameter (dim, min)** **Minimum Laminated Wall Thickness (emin)** **Minimum Joint Length (Amin)** **Socket Wall Thickness (e)** **2200** **195** **2.060** **2.5** **300** **294** **2.569** **3.0** **400** **392** **3.077** **500** **490** **3.585** **6.0** **1200** **1185** **8.0** **1626.0** **1500** **1485** **17.0** **22.0** **2000** **1985** **16.0** **240.0** **5.5** **Environmental Rigidity Grade** The MUHDPE alloy drainage pipes are classified according to their environmental rigidity, as shown in Table 2. **Table 2: Environmental Rigidity Grade of MUHDPE Alloy Drainage Pipes** Grade (SN8) SN10 SN12.5 SN16 SN20 Environmental Rigidity/(kN/m2) (8) 10 12.5 16 20 **5.6 Physical and Mecha

Development Information

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