High Speed Steel Round Bar 1)Diameter:8mm-32mm ... Staircase, Railing ,petroleum, chemical industry, electric power, boiler, high temperature resistant, low temperature resistant, and also apply to beam,Bridges,transmission tower ... Application: Be used for making all kind of drills High Speed Steel Round Bar:1)Diameter:8mm-32mm2)Length ... 10, Mn 0.45, P0.030, S0.030, Cr 7.10,W 0.50, Mo2.10, V 1.80Annealed ...