T/GZHG 015-2022 Active Group standards

T/GZHG 015-2022 Modified Polyvinyl Chloride (MPVC-H) hexagonal structure wall pipe for power and communication cable protection

Publish Date: 2022-01-05 Implement Date: 2022-01-05 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/GZHG 015-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Electrician's materials and general parts

ICS Name: Chemical production

Publish Date: 2022-01-05

Implement Date: 2022-01-05

Scope

Main Technical Content: 5. Technical Requirements 5.1 Raw Material Requirements The main raw materials used in the production of pipe materials should be PVC resin. Other materials may be added to improve the performance of the pipes, but the content of PVC resin (by mass) should be more than 80%. No plasticizers may be added, and the content of fillers should 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 can be determined by negotiation between the supplier and the buyer. The color should be uniform and consistent. 5.2.1.2 Appearance (MPVC-H) The hexagonal pipes should not have bubbles, cracks, obvious impurities, discoloration lines, or irregular ripples on their inner and outer walls. The inner wall should be smooth and flat. 5.2.1.3 Dimensions and Tolerances The dimensions and tolerances should comply with Table 1. The length is generally 6.2m, but it can be agreed upon by the supplier and the buyer. There should be no negative deviation in length. 5.2.2 Technical Performance (MPVC-H) The physical and mechanical properties of the hexagonal pipes should comply with Table 2. Table 2 (MPVC-H) Physical and Mechanical Properties of Hexagonal Pipes Unit Technical Indicator Test Method Density kg/m3 ≤1500 6.3 Vicat Softening Temperature ℃ ≥80 6.4 Oven Test—No delamination or cracks 6.5 Flat Test—The sample should not show cracking, delamination, or peeling 6.6 Ring Stiffness SN32 kN/m2 ≥326 6.7 SN40 ≥40 6.8 Flat Hammer Impact Test—Pass with 10/10 6.9 Flame Retardant Class—V-0, no drip 6.10 Volume Resistivity Ω·m ≥1×1011 6.11 Static Friction Coefficient ≤0.35 6.12 Sealing Performance of Connections 0.01 MPa water pressure, maintained for 30 minutes at 20°C, no leakage or seepage at the joints 6.3 Test Methods 6.1 Sample Preparation, Quantity Requirements, and St