... Length: from 3000mm to 5800mm Materials: jis scm440,sae 4140,aisi 4140,42crmo, scm435,4135,35crmo,13crmo44, 12cr1mov ,15crmo,scm415,16crmo44 ... vehicle, aircraft, missile,weapons,railways,bridge,pressure vessel, machine tool,gears in gearbox, gear shaft, cam, worm, claw clutch ... ProductsOur products mainly cover special steel,including stainless steel, tool steel, die steel,bearing steel,etc. And in ...