... machining processingForging ProcessHammer Forging,Pressure Forging,Dropped ForgingForging MaterialHigh Strength Alloy Steel,Alloy Steel40CrNiMo,34CrNiMo,42CrMo,35CrMoCarbon Steel: ... ,Chemical Confirm,Forging,Rough Machining,Heat Treatment,Mechanical Testing,Final Machining,Polishing,Painting,Electro-Plating,Chemical Plating ... reply! brass components : pipe coupling/metal rings/machine components