To provide a coated steel pipe in which a leakage test of the coated steel pipe can be easily performed and which is capable of more easily and positively mounting testing ports thereto than before.
In the coated steel pipe 1, band-like members 8 and 9 each covering both ends in the pipe axial direction of coating members 3 to 7 for coating the outer face of a steel pipe 2 are provided annularly in the circumferential direction of the steel pipe 2, and spaces T1 and T2 formed between the inner face of the band-like members 8 and 9, and the outer face of the steel pipe 2, and spaces S1 to S5 formed between the outer face of the steel pipe 2 and the inner faces of the coating members 3 to 7 are communicated. The testing ports 10 and 11 for performing the leakage test of the coated steel pipe 1 are provided on the outer face of the band-like members 8 and 9 so that each communicates with the spaces T1 and T2.
KAWAI YASUHIRO
IWAMI HIROSHI
TACHIBANA YUICHI
| JP2007147308A | 2007-06-14 | |||
| JPH09122919A | 1997-05-13 | |||
| JPH09122743A | 1997-05-13 | |||
| JPS60175627U | 1985-11-21 | |||
| JP2004131843A | 2004-04-30 | |||
| JPH0313352U | 1991-02-12 | |||
| JP2001353521A | 2001-12-25 | |||
| JPH11179552A | 1999-07-06 |
Tetsuo Kanamoto
Miaki Kametani
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