DX Metal Co., Ltd. is the first factory to use the centrifugal casting method making the high strength anti-abrasion concrete pumping pipe for concrete pump truck in China. We have advanced production machines and high precision test equipments for centrifugal casting the chrome carbide liners. The hardness of the chrome carbide liner is more than HRA75. The thickness of the anti-abrasion layer are 3mm for boom pipe and 5mm for deck pipe, the thickness of the steel shell are 2mm for boom pipe & 2.7mm for deck pipe. Totally thickness of twin wall pipes are 5mm (3+2) for boom pipe & 7.7mm (5+2.7) for deck pipe. The weight per meter are 16.7kg for boom pipe & 24kg for deck pipe. This process completely solves the problem of frequent plugging of the common twin wall pipe in the process of operation, and greatly improves the service life. The average service life of our concrete pumping pipe is more than 80000 cubic meters.