... Heat treatment:harden temper Surface treatment:shotblasting Forged and machined universal joint: Material:stainless steel, carbon steel,iron,copper,and so ... 160T to 1250T, 2)CNC lathes ,40sets 3)CNC Machining center 3sets 2.ISO 9001-2000 certificated 3.Export to:United ... ,so that we can quote our most competitive offer back. universal joint