| 摘要 |
A bent pipe for use in piping arrangement for transporting materials conaining solids, the bent pipe being prepared by subjecting to high-frequency bending work a straight blank pipe prepared by centrifugal casting and having a plurality of layers. The straight blank pipe comprises an outer layer made of a steel having high weldability, an inner layer made of a high Cr cast iron containing at least Cr in an amount of 10 to 35 wt.% and having high wear resistance, and a barrier layer formed between the outer layer and the inner layer for preventing an alloy component of each of the inner layer and the outer layer from diffusing into the other layer, the outer layer, the barrier layer and the inner layer being metallurgically joined. |
