... the Diameter:89, 108,133,159 Specially for coal and mining used rollers supplied ISO, CE,GB L=200~1400mm About us ... China(mainland), and all of our products have been successfully used in more than 10 countries in the world in the ... steel, Q235. Diameters: 89, 108, 133, 159mmLength: 200 to 3400mm Used in the steel industry, harbor, coal industry, power industry, mine ...