... Co., Ltd. mainly produce and export concrete pump spare parts for PUTZMEISTER,SCHWING and so on.. Products include steel reducers, boom ... twin wall pipe, twin wall elbow, clamps, fabric braid hose, wire braid hose, hose stems and ferrules, gaskets, clean out balls, weld on ends ... special parts according to your requirement or sample or drawings for you. Because we have a strict quality control system, ...