Production method for seamless brass pipe

The invention discloses a production method for a seamless brass pipe, which enables a fusion casting solid brass ingot to be made into a finished product brass pipe sequentially through a peeling extrusion procedure and four extension and anneal procedures, wherein in the peeling extrusion procedure, a gap is reversed between an extrusion die cylinder of an extruder die and an extrusion cushion in the extrusion die cylinder. In the production method for the seamless brass pipe, first the fusion casting solid brass ingot is processed through the peeling extrusion procedure, defects including impurities, slight cracks, oxide layers and the like remaining on the surface of the brass ingot are thoroughly removed, the surface quality of the finished product brass pipe is good, a blank pipe is extended and annealed for multiple times, and average grain size is from 0.15mm to 0.4mm, so that the finished product brass pipe has good physical properties. Compared with the prior art, the seamless brass pipe produced th