T/GZHG 014-2020 Abolished Group standards

T/GZHG 014-2020 Modified polyvinyl chloride (MPVC) double-walled corrugated pipe for power and communication cable protection

Publish Date: 2020-05-06 Implement Date: 2020-05-06 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Price: $ 20.00

Out of stock

Basic Information

Standard Code: T/GZHG 014-2020

Standard Type: Group standards

Standard Status: Abolished

is_force_gb: no

CCS Name: Electrician's materials and general parts

ICS Name: Plastic Composite

Publish Date: 2020-05-06

Implement Date: 2020-05-06

Scope

Main Technical Content: 5. Technical Requirements 5.1 Raw Material Requirements The materials used for the production of MPVC double-wall corrugated pipes shall be primarily polyvinyl chloride (PVC), which may be supplemented with additives to improve the processing and physical-mechanical properties of the pipes. MBS-modified PVC shall not contain plasticizers, 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 shall generally be orange. Other colors may 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 walls of PVC-M double-wall corrugated pipes shall not have bubbles, cracks, obvious impurities, decomposition discoloration lines, or irregular corrugations. The inner wall shall be smooth and flat. 5.2.1.3 Dimensions and Tolerances The dimensions and tolerances shall comply with Table 1, and the length shall generally be 6.2m, which can be determined by mutual agreement between the supplier and the purchaser. The length shall not have negative deviations. 5.2.2 Technical Performance 5.2.2.1 The physical and mechanical properties of MPVC double-wall corrugated pipes shall comply with Table 2. Table 2: Physical and Mechanical Properties of MPVC Double-Wall Corrugated Pipes Unit Technical Indicator Test Method Density kg/m3 ≤ 1,500 6.3 Vicat Softening Temperature ℃ ≥ 80 6.4 Oven Test - No delamination or cracking 6.5 Flatness Test - The sample shall not show cracking, delamination, or peeling 6.6 Ring Stiffness SN 24kN/m2 ≥ 24 SN 32 ≥ 32 SN 40 ≥ 40 Ring Section Heat Compression Force SN 24kN ≥ 0.35 6.8 SN 32 ≥ 0.5 SN 40 ≥ 0.75 Fall Hammer Impact Test -10/10 Pass 6.9 Flame Retardancy Class - V-0, no dripping. 6.10 Volume Resistivity Ω·m ≥ 1×1011 6.11 Static F