T/GZHG 003-2022 High-strength Polyvinyl Chloride Alloy (GHFB) Cable Protection Conduit

Scope

Main Technical Content: 5. Technical Requirements 5.1 Raw Material Requirements The materials used for high-strength polyvinyl chloride alloy (GHFB) cable protection conduits are made from modified polyvinyl chloride alloy resins, which are extruded into pipes that meet the requirements of this document for new composite reinforced pipes. No plasticizers may be added to the modified materials, and the filler content shall not exceed 5%. 5.2 Product Requirements 5.2.1 Color, Appearance, and Dimensions 5.2.1.1 Color The color of the pipes is generally orange. Other colors shall be determined by mutual agreement between the supplier and the purchaser, and the color should be uniform and consistent. 5.2.1.2 Appearance The inner and outer surfaces of high-strength polyvinyl chloride alloy (GHFB) cable protection solid-wall pipes should be smooth, without obvious scratches, indentations, impurities, decomposition discoloration lines, or uneven coloring. The inner and outer walls of high-strength polyvinyl chloride alloy (GHFB) cable protection double-wall corrugated pipes should not have bubbles, cracks, obvious impurities, decomposition discoloration lines, or irregular corrugations. The inner wall should be smooth and flat. 5.2.1.3 Dimensions The dimensional tolerances of high-strength polyvinyl chloride alloy (GHFB) cable protection conduits shall comply with Tables 3 and 4. Table 3 Nominal inner diameter Allowable deviation (mm) Nominal inner diameter Allowable deviation (mm) Inner diameter of socket Allowable deviation (mm) 100 + 0.6 - 0.1 + 0.6 - 0.1 150 + 0.7 - 0.1 + 0.7 - 0.1 175 + 0.8 - 0.1 + 0.8 - 0.1 200 + 0.9 - 0.2 + 0.9 - 0.2 225 + 1.0 - 0.3 + 1.0 - 0.3 250 + 1.1 - 0.3 + 1.1 - 0.3 Table 4 Allowable deviation of pipe wall thickness Unit: mm Pipe thickness Nominal inner diameter Allowable deviation (mm) t < 6.0 + 0.60 6.0 ≤ t < 7.0 + 0.70 7.0 ≤ t < 8.0 + 0.8 - 0.1 8.0 ≤ t < 10.0 + 0.9 - 0.1

Development Information

Related Standards