T/GZHG 018-2020 Active Group standards

T/GZHG 018-2020 Communication Enhanced Polyvinyl Chloride Single-hole Square Double-wall Corrugated Pipe with Phosphate Slag Reinforcement

Publish Date: 2020-10-13 Implement Date: 2020-10-13 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 018-2020

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Communication equipment

ICS Name: Plastic Composite

Publish Date: 2020-10-13

Implement Date: 2020-10-13

Scope

Main Technical Content: 5. Technical Requirements 5.1 Color: The color of the pipes is generally uncolored, or agreed upon by both parties. The color should be uniform and consistent. 5.2 Appearance: The inner and outer walls of the pipes should be smooth and flat, without bubbles, cracks, depressions, protrusions, discoloration lines, or obvious impurities. The cross-section of the sleeve should be cut evenly, without cracks or burrs, and perpendicular to the pipe axis. 5.3 Structural Dimensions and Length: The typical dimensions of the phosphogypsum-reinforced PVC single-hole square double-wall corrugated pipes for telecommunications are shown in Table 1. Table 1: Dimensions of Phosphogypsum-Reinforced PVC Single-Hole Square Double-Wall Corrugated Pipes for Telecommunications Unit: mm Specification Dn (W × H) Nominal inner diameter Dn Width W Laminated wall thickness e Basic Dimension Limit Deviation 100 (123 × 123) 100 + 2 123 + 2 1.8 + 0.25 5.4 Bending: The phosphogypsum-reinforced PVC single-hole square double-wall corrugated pipes for telecommunications are not allowed to have an "S"-shaped bend. The bending in the same direction should not exceed 0.5%. 5.5 Physical and Mechanical Performance Requirements: The physical and mechanical performance of the phosphogypsum-reinforced PVC single-hole square double-wall corrugated pipes for telecommunications should meet the requirements specified in Table 2. Table 2: Physical and Mechanical Performance Requirements of Phosphogypsum-Reinforced PVC Single-Hole Square Double-Wall Corrugated Pipes for Telecommunications No. Item Unit Performance Requirements 1 Drop hammer impact test /(0 ± 1) °C, 2h, no cracking in the samples 2 Pipe stiffness kN/m2 S1: ≥ 1500 S2: ≥ 2000 3 Clamp drop test — No damage or cracks in the samples 4 Longitudinal shrinkage rate % (Maintained at 150 ± 2 °C for 60min, cooled to room temperature; no delamination, cracking