Alloy steel bars, rods, shapes and sections; hollow drill bars and rods, of alloy or non-alloy steel

722810 Steel, alloy; bars and rods, of high speed steel 722820 Steel, alloy; bars and rods, of silico-manganese steel 722830 Steel, alloy; bars and rods, hot-rolled, hot-drawn or extruded 722840 Steel, alloy; bars and rods, forged 722850 Steel, alloy; bars and rods, cold-formed or cold-finished 722860 Steel, alloy; bars and rods n.e.c. in heading no. 7228 722870 Steel, alloy; angles, shapes and sections 722880 Steel, alloy or non-alloy; hollow drill bars and rods