... :carbon steel 3certificate:ISO9001:2008 4Quick delivery,wide application High tensile steel shaftFeature1)Material:iron,steel.stainless steel,carbon steel,HSS ... ,polishing,galvanized,electroplating,spraying3)processing machine:CNC lathe,grinding machine,milliing machine,drilling machine,wire-cutting machine,CNC bending machine.4)testing machine:caliper,digital height gauge,roughness ...