DP Cast – Investment CastingAt DP Cast, we pour a wide range of alloys, including plain carbon and low-alloy steels, stainless steels, and non-ferrous alloys, such as aluminum, bronze and ...Aluminum Camlock Couplings Type-DP 5" Dust Plug Die Casting.100% Titanium "Deep Pressed" Frames with Zirconium ring inserts. Corrosion proof and braid friendly!