T/GZHG 028-2021 Polyvinyl chloride (modified anhydrous calcium sulfate) W-type drainage pipe

Scope

Main technical content: The inner and outer layers of the color pipe should be uniform in color, and the color should be determined through consultation between the supplier and the buyer. 2. The appearance of the pipe should not have bubbles, cracks, discoloration lines, obvious impurities, or irregular ripples on the inner and outer walls. The inner wall of the pipe should be smooth, and the end face of the pipe should be flat and perpendicular to the axis. The inner and outer walls of the pipe in the wave trough area should be tightly welded and should not show any loosening. 3. Specifications and dimensions: The length of the pipe is generally 6 meters, but it can also be determined through consultation between the supplier and the buyer. The length of the pipe (L) and the effective length (L1) are shown in Figure 1. The length of the pipe is not allowed to have negative deviations.

Development Information

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