Rubber belt conveyor used in coal, mine, metallurgy,power plant, harbon, cement industry. ... belt conveyor Used range: Rubber belt conveyor used in coal, mine, metallurgy,power plant, harbon, cement, chemical ... (st630 to st2000N/mm.layer).Certificates of belt conveyor machinery GB, CEMA, ISO. ZB, Special Service for ... on) Under-pit explosion-proof belt conveyor machinery for coal mining industrial use