Double wall corrugated pipe
A technology of double-wall bellows and bellows, which is applied to pipes, hoses, pipes/pipe joints/fittings, etc., can solve problems such as waste of social resources, failure of ring stiffness and ring flexibility to meet the standard requirements, and delays in construction schedules, etc.
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[0024] A HDPE double-wall corrugated pipe, the pipe wall of the corrugated pipe is composed of inner and outer two-layer structure, characterized in that:
[0025] The parts by weight of each component of the composition raw material of its every layer structure are:
[0026] outer layer
[0027] HDPE high-density polyethylene resin 50-80 parts
[0028] Special reinforcement masterbatch 15-30 parts
[0029] 10-25 copies of special modified masterbatch
[0030] Hygroscopic masterbatch 2-5 parts
[0031] Color masterbatch 1-3 parts
[0032] inner layer
[0033] HDPE high-density polyethylene resin 50-80 parts
[0034] Metallocene linear low density polyethylene 15-30 parts
[0035] 20-45 copies of special modified masterbatch
[0036] Hygroscopic masterbatch 1-3 parts
[0037] Color masterbatch 1-3 parts.
[0038] The double-wall corrugated pipe is characterized in that: the melt index of the high-density polyethylene resin used in the outer layer structure is between ...
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