... S235JR; 4.Shaft material: Deep drawn steel C45(DIN). Name: belt conveyor return idler Features: (1)Tube:carbon steel tube S235JR/ seamless steel ... , ISO, BV, SGS, IKA, ETC.Standards :GB, ISO, CEMA, DIN, JIS, ETC.Application:Coal industry, power industry, cement industry, harbor, metallurgy ...