Production and Application of Pretensioned Concrete Wall Pipe Piling Sheet

In this paper proposing that pretensioning method prestressed reinforced concret precast pipe piling sheet has great market. Analysing the process of pipe piling sheet members periphery and flange. Pointing out processing method of flange precasted semifinished methods to defermine on sheet's guality and cost, comparing with quality and cost of the current three technology producting flange precast semifinished mentals, to reveal socience basis of direct casting precast semifinished mentals of trangential residual tensile stress. The proposals of estiminating residual tensile stress are put forward.