Shandong TongDuoBao mechanical equipment Co., Ltd. is the first scientific research development and production large-scale sales company in China. Our company covers an area of 15000 square meters and our factory building covers an area of 10000 square meters. Our company is divided into three branch companies: One company specializes in concrete pump rubber hose fittings for concrete pumps (sandblasting hose,spray hose,concrete pump hose),The size are 2",2.5",3",4",5",6",length can be 1 to 12 meters, Two layers and four layers steel wire reinforced, We can produce according to your requirments.The second company specializes in producing concrete pump pipeline fittings,common concrete pump pipe,wear-resisting concrete pump pipe, double layer quench hard pipelines (Straight Pipes, Elbow Pipes and Reducer Pipes), HBT30~80 and all kinds of pumps ( Straight pipes, Elbow pipes and Reducer pipes) and various pipes of cards, rubber rings, rubber hoses, cleaning balls, cleaning cylinders, cleaning pistons, pump fittings, pistons, cutting rings, and seal components. Our third company specializes in construction equipment. Concrete pump,concrete placing boom,concrete mixer etc.Hope to establish more further cooperation with your company and warmly welcome to visit our company.