... duty,middle-sized and heavy-duty. ISO,CE. Carbon steel About us We are manufacture in China ( ... belt conveyor machineryUsed range: Rubber belt conveyor used in coal, mine, metallurgy,power plant, harbon, cement, ... At least 5 times paintings.Absolutly rust-resistant.Mterials: Carbon steel, Q235. Rubber belt. Belt materials(4 kinds ... , shippment. explosion-proof belt conveyor machinery for coal mining use