T/GZHG 029-2022 Active Group standards

T/GZHG 029-2022 Modified Polystyrene PVC Bubble Pipe with Slit-shaped Corrugated Wall for Power and Communication Applications using Water-free Gypsum

Publish Date: 2022-05-09 Implement Date: 2022-05-09 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 029-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Plastic Composite

Publish Date: 2022-05-09

Implement Date: 2022-05-09

Scope

Main Technical Content: 4.4 Raw Material Requirements: - The addition of anhydrous phosphogypsum in modified polyvinyl chloride shall not be less than 8% by mass, and the fineness shall be 800 meshes. The performance of anhydrous phosphogypsum shall comply with the requirements of T/GZHG 026-2020. 4.5 Appearance: - The colors of the inner and outer layers of the pipe shall be uniform and consistent, typically orange. The colors can be agreed upon by both parties. The inner and outer walls of the pipe shall be smooth and flat, without air bubbles, cracks, obvious scratches, indentations, or discoloration lines. Ventilation grooves are not allowed. The end face of the casing shall be cut flat and perpendicular to the axis. 4.6 Performance Indicators: - The physical properties of the pipe shall comply with the requirements in Table 3. Table 3: Physical Properties of Pipe Item Technical Specifications Density/kg/m3 ≤1550 Vicat Softening Temperature/°C ≥80 Oven Test: No delamination or cracking Flat Test: Compression deformation of 40% of the outer diameter, and the sample shall not show cracking, delamination, or peeling External Pressure Load Performance/N/200mm S1≥3500 S2≥5500 Fall Hammer Impact Test: 10/10 Pass Volume Resistivity/Ω·m ≥1×1011 Static Friction Coefficient ≤0.35 Connection Sealing (0.01MPa water pressure, maintained for 30 minutes at 20°C): No leakage 5. Test Methods 5.1 Conditioning and Test Environment: - The samples shall be conditioned and tested at a temperature of (23±2)°C and a relative humidity of (50±2)% for no less than 24 hours. 5.2 Appearance and Dimension Measurement: 5.2.1 Appearance: Follow the provisions in DL/T 802.4-2007, Sections 4.2.1 and 4.2.2. 5.2.2 Dimensions: Measure the inner diameter, socket joints, wall thickness, square tube width, and tube length according to GB/T 8806-2008. 5.3 Density: Follow the provisions in GB/T 1033.1-2008, Section A. 5.4 Vicat Softening T