T/GZHG 024-2022 Nanomodified High Density Polyethylene (MUHDPE) Bi-wave Fiber Reinforced Bored Geotextile Pipes

Scope

Main Technical Content: 5. Technical Requirements 5.1 Color (MUHDPE): The colors of the inner and outer layers of the double-peak reinforced pipe should be uniform and consistent, typically green, which can be agreed upon by both the supplier and the buyer. 5.2 Appearance (MUHDPE): The inner and outer walls of the double-peak reinforced pipe should be smooth and flat, without air 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 is generally 6 meters, which can also be agreed upon by both the supplier and the buyer. The length of the pipe should include the length of the socket part. There should be no negative deviation in the length of the pipe. 5.4 Dimensions (MUHDPE): The dimensions of the double-peak reinforced pipe meet the requirements of Table 1. Table 1 (MUHDPE) Dimensions of 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 3.0 300 294 2.5 6.9 5.0 400 392 3.0 7.7 6.0 500 490 3.5 8.5 4.0 600 588 4.0 9.6 10.0 4.0 800 785 4.5 11.8 12.0 5.5 1000 985 6.5 14.0 6.0 1200 1185 8.0 16.2 6.0 1500 1485 17.8 6.0 5.5 Classification (MUHDPE): Double-peak reinforced pipes are classified according to their 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 Propert

Development Information

Related Standards