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Do you know plastic drain Board on material requirements

Plastic drain Board on material requires that you understand? Not clear it doesn't matter, that with small series to learn about the following article!

1, use of plastic drainage plate tensile index plundered included Board 1.7N/mm2; filters are 0.44N/mm2;

2, plastic drainage plate elongation between 2% and 10%, must comply with the standards;

3, its resistance to tearing up more than 300N (actual SPB-1 membrane tear as 1340N);

4, low permeability of water is greater than or equal to 10-3mL/s;

5, its resistance to deformation and soil determine the membrane permeability coefficient not less than 4.2x10-4cm/s.

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