Midland Industries - Brass Fittings, Valves, Hose Clamps and Accessories for Hose, Pipe and Tube., Consolidate your vendor base with Midland Industries brass fittings for tube, pipe, and hose. Cast Fittings and Nipples in brass, bronze, stainless steel, black and galvanized steel and malleable iron. Ball valves, check valves, gate valves, and strainers in brass, bronze, stainless steel, steel, and plastic. Pneumatic quick disconnects. Plus pneumatic, hose, truck and auto accessories as well as our line of hydraulic adapters.