| 摘要 |
There is disclosed an elbow protection cover constituting a bending portion of the protection cover covering insulating material used for insulation of pipes with heat insulating material, wherein the whole curved surface of the above-mentioned cover is integrally fabricated by press drawing of a thin metal plate. There can be provided a high quality elbow protection cover wherein cost performance is good, and high strength and prevention of water leak or the like can be achieved by introducing a mass-production method of elbow protection covers instead of manual operation where board members are joined by soldering or the like.
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