... kinds of forged products include all kinds of drive shaft assembly for Medium & heavy duty ... ..Hardness after Heat Treatment4..Mechanical testing5..Final NDE and Final Dimension CheckQuality Assurance Document:1.Item ... Forging,Rough Machining,Heat Treatment,Mechanical Testing,Final Machining,Polishing,Painting,Electro-Plating,Chemical Plating ... reply! stamping forged part/drive equiment/propeller shaft