FIELD: erection of pipe lines. SUBSTANCE: pipe has sectional protective bushes consisting of inner and outer rings. Inner rings are made from corrosion-resistant metal Whose heat conductivity coefficient is lower as compared with metal of pipe; outer rings project beyond ends of pipe by no more than 2 mm. Outer rings are made from the same as pipe; thickness of wall does not exceed thickness of plastic envelope. EFFECT: facilitated manufacture of pipe. 4 cl, 5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PIPE WITH INTERNAL PLASTIC ENVELOPE | 2000 |
|
RU2171945C1 |
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| PIPE LINED WITH METAL | 2002 |
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| METHOD OF CONNECTION OF THIN-WALLED METAL LINED AND COATED PIPES | 1999 |
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RU2153120C1 |
