We produce wind power shafts, transmission shafts,ship shafts, gear shafts, crank shafts, shafts up to iameter ≤ 20m;Unit weight ≤ 250 tons Material:34CrMo6, 42CrMo4, 34CrniMo6, 36CrNiMo4,13CrMo, 9CrMo, A105, S355J, or as per required.