... manganese steel and bardend steel.b60M1012.892.51500Mainly used for threading of petroleum pipe, also used for fine machining ofhardened steel ... ,etc. 2.Tungsten carbide wear parts:carbide rollers,carbide gauge,tungsten carbides inserts,carbide roll collar,carbide plug gauge,etc. ii.Tungsten carbide products:carbide board,Bars,etc ...