T/GZHG 024-2021 Nano-modified High Density Polyethylene (MUHDPE) Double-wave Peak Enhanced Buried Sewer Pipe

Scope

Main Technical Specifications: 5.1 Color (MUHDPE): The colors of the inner and outer layers of the double-peak reinforced pipe (MUHDPE) should be uniform and consistent, typically green, which can be agreed upon by both the supplier and the purchaser. 5.2 Appearance (MUHDPE): The inner and outer walls of the double-peak reinforced pipe (MUHDPE) should be smooth and flat, with no bubbles, cracks, obvious scratches, indentations, or discoloration lines. Ventilation grooves are not allowed. The end face of the sleeve should be cut flat and perpendicular to the axis. 5.3 Length (MUHDPE): The length of the double-peak reinforced pipe (MUHDPE) is typically 6 meters, but can be agreed upon by both the supplier and the purchaser. The length of the pipe should include the part of the socket. The length of the pipe should not have negative deviations. 5.4 Dimensions (MUHDPE): The dimensions of the double-peak reinforced pipe (MUHDPE) meet the requirements of Table 1. Table 1 (MUHDPE) Dimensions of the Double-Peak Reinforced Pipe Unit: mm Nominal inner diameter DN/ID Minimum average inner diameter dim, min Minimum laminated wall thickness e1min Minimum joint length Amin Minimum "U"-shaped groove depth Hmin Minimum socket wall thickness e2min 200 195 2.0 6.0 3.0 400 392 3.0 7.0 500 490 3.5 8.5 4.0 600 588 4.0 7.5 1000 985 6.0 14.0 6.0 1500 1485 17.8 6.0 5.5 Classification (MUHDPE): The double-peak reinforced pipe (MUHDPE) is classified according to its ring stiffness, as shown in Table 2. Table 2 Nominal ring stiffness grade SN8 SN10 SN12.5 SN16 Ring stiffness/(kN/m2) 8 10 12.5 16 5.6.1 The physical and mechanical properties of nano-modified high-density polyethylene materials should meet the requirements of Table 3. Table 3 Material Physical and Mechanical Properties Serial Number Item Unit Indicator Test Method 1 Tensile Strength MPa ≥ 226.4 4.4

Development Information

Related Standards