... Year) Concrete Pump Pipe Flange, Concrete Pump Pipe Clamp and Forging Part Product Line Concrete Pump Pipe Flange 200,000 Pieces / Year, Concrete Pump Pipe Clamp 60,000 Pieces ... / Year, Forging Part 1,500,000 Pieces / Year Concrete Pump Pipe Flange 100,000 Pieces;Concrete Pump Pipe Clamp ...