The invention discloses a production process of a
metal corrugated
pipe. The process comprises the steps of (1), wave plate
punching and rolling press deforming; (2), shotblasting; (3),
welding; (5),
heat treating; (6),
graphite annulus embedding (7),
graphite annulus picking; (8), trimming; and (9),
polishing. The process of the present invention is suitable for the
metal welding corrugated
pipe of single layer or multi layer wave plate, and is mainly characterized in that after the shotblasting is adopted, the wave plate produces a certain micro deforming, the fatigue lifetime is increased, and the breakage and the fracture damage of the corrugated
pipe during the operation process can be reduced; simultaneously the
welding process method of the invention improves the
weld strength of the corrugated pipe, and reduces the oxidation of the corrugated pipe when being welded; the
heat treating process method of the invention reduces the oxidation of the corrugated pipe when the
heat treating is performed, and makes the elastic property be steady. The welding and the heat treating process methods of the invention reduce the elasticity losing, the breakage and fracture damage of the corrugated pipe during the operation process.