T/GZHG 001-2019 Active Group standards

T/GZHG 001-2019 Modified Polyvinyl Chloride (MCMP) for Electricity and Communication - Square Double-Wall Corrugated Pipe

Publish Date: 2019-02-25 Implement Date: 2019-03-25 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 001-2019

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Plastic profiles

ICS Name: Building accessories

Publish Date: 2019-02-25

Implement Date: 2019-03-25

Scope

Main Technical Content: 5 Technical Requirements 5.1 Raw Material Requirements (MCMP) The materials used for square pipes are multi-component modified polyvinyl chloride resins, which are extruded into new composite reinforced pipes meeting the requirements of this standard. The modified materials must not contain plasticizers, and the content of fillers 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 negotiation between the supplier and the buyer, and the color should be uniform and consistent. 5.2.1.2 Appearance (MCMP) The inner and outer walls of the square pipes shall not have bubbles, cracks, obvious impurities, decomposition discoloration lines, or irregular ripples. The inner wall should be smooth and flat. 5.2.1.3 Dimensions and Tolerances The dimensions and tolerances shall comply with Table 1. The length is generally 6.2m, but can be determined by negotiation between the supplier and the buyer. The length of the (MCMP) square pipes shall include the length of the round pipe joints, and the maximum negative deviation in length shall be 0.5% of the length. 5.3 Technical Performance 5.3.1 The technical performance of the (MCMP) square pipes shall comply with Table 2. Table 2: Technical Performance Requirements for Modified Polyvinyl Chloride (MCMP) Square Double-Wall Corrugated Pipes Item Unit Technical Indicator Test Method Density kg/m3 ≤1500 6.3 Vicat Softening Temperature ℃ ≥93 6.4 Oven Test - No delamination or cracks 6.5 Flat Test - Compressed until the inner walls of the pipe contact each other, the sample shall not show cracking, delamination, or peeling 6.6 Anti-external pressure load performance N/200mm S1≥4000, S2≥5500 6.7 Impact Test - Pass at -10/10 6.8 Flammability OI% ≥32 6.9.1 Flammability rating - V-0, extinguishes immediately upo