T/GZHG 022-2021 Modified Phosphate Gypsum Reinforced Hard PVC Drainage and Sewer Pipe Material

Scope

Main Technical Content: 6.1 Color: The color of the pipe should preferably be green, and the color of the pipe should be uniform and consistent. If there are special color requirements, they shall be determined through consultation between the supplier and the buyer. 6.2 Appearance: The inner and outer walls of the pipe should be smooth, and there should be no bubbles, cracks, depressions, or discoloration lines. The ends of the pipe should be cut flat and should be perpendicular to the axis. 6.3 Specifications and Dimensions 6.3.1 Length: The length of the pipe is generally 4m, 6m, 9m, or 12m. If there are special requirements, they shall be determined through consultation between the supplier and the buyer. The pipe length is shown in Figure 1. Negative deviations are not allowed. Note: L – Pipe length; L1 – Effective length; dn – Nominal outer diameter. Figure 1: Pipe length 6.3.2 Average Outer Diameter: The average outer diameter (dem) should comply with the provisions of Table 3. Table 3: Average Outer Diameter and Wall Thickness Unit: Nominal outer diameter (dn), mm Average Outer Diameter (dem), mm Wall Thickness, mm SN2 SN4 SN8 SN12.5 SN16 min. max. emin. emmax. emin. emmax. emin. emmax. 110 110.01 103.2 3.2 3.8 4.0 4.6 4.7 5.4 5.6 6.6 7.1 200 200.0 200.5 3.9 4.5 4.9 5.6 5.9 6.7 7.8 250 250.0 250.5 4.9 5.6 6.7 7.8 315 315.0 315.6 7.0 7.9 8.7 10.4 11.7 12.7 14.2 13.6 (355) 355.0 355.7 7.0 7.9 8.9 11.0 11.7 13.1 14.3 16.0 15.3 17.1 (450) 450.0 450.8 8.8 9.9 11.0 12.3 13.2 14.6 16.3 17.9 19.9 19.1 21.3 306 300.0 300.1 12.3 13.8 15.4 17.2 18.4 205.2 225.0 241.0 (710) 710.0 710.8 12.3 13.8 15.4 17.2 18.4 205.2

Development Information

Related Standards