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