... our ProductsCasting ProcessSand Casting,Precision Casting,Investment CastingCasting MaterialHigh Strength Alloy Steel ,Alloy SteelASTM A148 135-125, 115 ... processingForging ProcessHammer Forging,Pressure Forging,Dropped ForgingForging MaterialHigh Strength Alloy Steel,Alloy Steel40CrNiMo,34CrNiMo,42CrMo,35CrMoCarbon Steel: ... reply! brass components : pipe coupling/metal rings/machine components