FIELD: construction.
SUBSTANCE: method comprises applying a protecting cover on the inner side of butted pipes. The protecting cover made of a roller is applied before welding and contains a mixture of metal protector with adhesive agent, a mixture of atactic polypropylene with heptane. The mixture contains (in mass %): 40-75 of metal protector, 5-10 of atactic polypropylene, and 10-50 of heptane.
EFFECT: enhanced reliability of protecting welds.
4 cl
| Title | Year | Author | Number |
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RU2397404C1 |
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RU2410217C2 |
| METHOD FOR ENAMELING INNER SURFACES OF PIPES FOR MANUFACTURE AND MOUNTING OF PIPELINES BY WELDING | 1991 |
|
RU2053313C1 |
| PROCEDURE OF APPLICATION OF COATING ON PIPE WITH BEAD WELD | 2007 |
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RU2424254C2 |
| METHOD OF CORROSION PROTECTION OF PIPE LINE WELDED JOINT | 1995 |
|
RU2103592C1 |
