... friction coefficient 3.Long lifetime 3.40/33mm With Silicon HDPE pipes1.As a company listed in Singapore , ATON Innovation Group ... doors, telecommunication ducts, PE fuel gas, etc.2.Specifications of HDPE pipes1Sizes32/26mm, Φ40/33mm, Φ46/38mm. Φ60/50mm2Low Friction CoefficientStatic ... 0.25, Silicon layer, can keep smooth permanently. the cable or fiber cable can be blown to over 2000m long in one ...