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  4. Testing method and judging specification...

Testing method and judging specification of threading corrugated pipe size

Testing method and judging specification of threading corrugated pipe size

This article introduces the detection method and judgment specification of the corrugated pipe specification and size, which is suitable for the general detection of the size of the general plastic corrugated pipe to ensure the accuracy of the inspection results of the corrugated pipe specification and size.

corrugated pipe specification and size inspection need tools: scissors, aperture gauge, vernier caliper (accuracy 0.01mm), steel tape measure.

corrugated pipe specification and size detection steps:

1. Take three samples at each random inspection, and the length of each sample is 12-15 times the outer diameter of the corresponding specifications;

2. First measure the bending radius: bend three samples separately, measure the bending radius with a steel tape measure, and calculate the average bending radius of the three samples;

3. Then measure the inner diameter: use an aperture gauge for inner diameter measurement, take 4 different sections for each sample to measure, and calculate the average value of the inner diameter of 12 sections of 3 samples;

4. Final measurement of outer diameter: 0.01mm precision vernier caliper is used for outer diameter measurement. Each sample is measured at 4 points, and the average value of the outer diameter of 12 points of 3 samples is calculated.

corrugated pipe specification size inspection result judgment specification:

If the average value of the bending radius, the average value of the inner diameter and the average value of the outer diameter meet the following three requirements at the same time, it is judged as qualified, otherwise it is judged as unqualified.

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