... CE,ISO,BV,SGS,IKA 2.Material:steel,rubber,plastic,hdpe 3.Roller sample availabe We can also offer solutions ... Sprial roller MaterialCarbon Steel,Stainless steel,Plastic,Nylon,Rubber,Ceramic,HDPE,UHMPE,Polyurethane and so on SpecificationDiameter:50mm-219mm Length: ... coefficient, waterproof, effective sealing system,(2).High accurate steel pipes ensure the rollers with low vibration and noise.(3).Multi ...