We can manufacture the rollers/idlers of dia from 89mm-219mm, length from 190mm-3400mm, which are used in the steel industry, harbor, coal industry, power industry, cement industry, etc. And, we have passed CE certification and ISO9001:2008. 
The rollers/idler are made from high precision welding pipes and seamless tubes, steel plates and the body of the roller/idler and the bearing are welded as an integrated one by extrusion and guarantee welding, which make the rollers/idler resistance. Long lifetime. The seal of our rollers/idler are labyrinth seal, which make the rollers/idler waterproof and dustproof. 
Besides, we can produce these rollers/idlers according to the Buyer's requirement.