| 摘要 |
An elbow is provided to facilitate exchange and repair work for the elbow by forming a ceramic layer in a pipe having an opening and on an inner wall of a cover. An elbow comprises a pipe(100) having an opening, and a cover(200) to open/close the opening. The pipe includes an iron layer, an adhesive layer, and a ceramic layer. The iron layer is formed at an outermost portion of the pipe and the ceramic layer is formed on an inner wall of the iron layer. The adhesive layer is interposed between the ceramic layer and the iron layer. The pipe includes two linear pipe sections and a bending section(121) formed between the two linear pipe sections. Protrusions(111) are formed at an outer surface of the linear pipe sections, respectively. |
