PIPE PROVIDED WITH CORROSION PREVENTION LAYER ON THE OUTSIDE SURFACE, PROCESS FOR PRODUCTION OF THE SAME, AND PROCESS FOR PRODUCTION OF ALLOY WIRES TO BE USED FOR CORROSION PREVENTION OF OUTSIDE SURFACE OF THE PIPE

摘要

Disclosed is a pipe made of an iron-base material, having a corrosion prevention layer formed on the surface thereof. The corrosion prevention layer includes a Zn-Sn sprayed coating including Sn in a content of more than 1% by mass and less than 50% by mass and the balance composed of Zn. Alternatively, the corrosion prevention layer includes a Zn-Sn-Mg sprayed coating including Sn in a content of more than 1% by mass and less than 50% by mass, Mg in a content of more than 0.01% by mass and less than 5% by mass and the balance composed of Zn. Preferably, the sprayed coating of the corrosion prevention layer includes at least any one of Ti, Co, Ni and P, and the content of each of these elements is more than 0.00.% by mass and less than 3% by mass.