... in coal,mine,steel,cement,harbor heavy duty rubber rollers Introduction to our company:Products we can manufacture: ... Roller TypeCarrying,Impact,Return,Friction,Tapered,Guide,Spiral,Comb and so onMaterialCarbon steel, stainless steel,nylon,plastic,ceramic, ... and water testsStart and run resistance testsIdler Roller Components:Our Factory Photos:Our products used in the world heavy duty rubber rollers ...