T/GZHG 003-2019 Active Group standards

T/GZHG 003-2019 Electricity and communication dual-axis oriented polyvinyl chloride (PVC-O) 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 003-2019

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Synthetic materials

ICS Name: Other insulating materials

Publish Date: 2019-02-25

Implement Date: 2019-03-25

Scope

Main Technical Content: 5 Test Methods 5.1 State Adjustment and Test Environment Unless otherwise specified, the specimens shall be subject to state adjustment according to the provisions of GB/T 2918 under the condition of (23±2)°C for no less than 24 hours, and the tests shall be conducted under the same conditions. 5.2 Appearance Inspection Inspect visually with the naked eye, and illuminate the inner wall with a light source if necessary. 5.3 Length Measurement Measure using a measuring tool with an accuracy of not less than 1mm. 5.4 Dimension Measurement 5.4.1 Average Outer Diameter and Limit Deviation Measure the two outer diameters perpendicular to each other on the same cross-section of the specimen according to the provisions of GB/T 8806-2008. The arithmetic mean of the two outer diameters shall be taken as the average outer diameter of the pipe. 5.4.2 Wall Thickness and Limit Deviation Measure according to the provisions of GB/T 8806-2008. 5.5 Bending Test Test according to the provisions of QB/T 2803-2006. 5.6 Physical and Mechanical Properties 5.6.1 Ring Stiffness Conduct the test according to the provisions of GB/T 9647-2015. Complete the measurement within 5 minutes at a test temperature of (23±2)°C. 5.6.2 Flat Test Conduct the test according to the provisions of GB/T 9647-2015. Take three pipes each with a (200±5)mm section as specimens. The two ends of the specimens shall be cut perpendicularly, and the test speed shall be (10±2)mm/min. When the specimens are compressed until the upper and lower walls of the pipe contact each other, immediately unload. The pipe shall not crack or delaminate. 5.6.3 Drop Hammer Impact Test Determine according to the provisions of GB/T 14152-2001. Take 10 specimens with a length of (200±10)mm and place them in a water bath or air bath at (0±1)°C for 2 hours of state adjustment. After state adjustment, the test shall be completed within 10 seconds from the air bath