Metal Forging MachineryChina AISI 4340 (34CrNiMo6, 1.6582) Forged/Forging Crankshafts/Eccentric Shafts/Crank Shafts, Find details about China AISI 4340 Forged Crankshafts, AISI 4340 Forging Eccentric Shafts from AISI 4340 (34CrNiMo6, 1.6582) Forged/Forging Crankshafts/Eccentric Shafts/Crank Shafts