FIELD: plastic pipes.
SUBSTANCE: in biplastic pipe with inner layer made of thermoplast, outer layer made of glass plastic and grooves made on outer surface of inner layer, depth of grooves h is determined by formula h>Δα·Δt·din, where Δα is difference in coefficients of linear thermal expansion of materials of inner and outer layers; Δt is difference in maximum and minimum temperatures of transferred medium; din is outer diameter of inner layer.
EFFECT: improved strength and operation reliability of biplastic pipe.
3 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| BIPLASTIC PIPE | 2002 |
|
RU2248493C2 |
| METHOD FOR MANUFACTURE OF BIPLASTIC PIPES | 2004 |
|
RU2271930C2 |
| PLASTIC PIPE | 2004 |
|
RU2269713C2 |
| PLASTIC PIPE | 2003 |
|
RU2269712C2 |
| METHOD AND DEVICE FOR JOINING PIPES | 2004 |
|
RU2260734C1 |
| DEVICE FOR JOINING METALLIC AND PLASTIC PIPES | 2004 |
|
RU2272213C2 |
| BIPLASTIC PIPE | 2004 |
|
RU2263243C1 |
| HEAT EXCHANGE PIPE | 2002 |
|
RU2231007C2 |
| METHOD OF MAKING LAMINATED PIPES FROM POLYMER MATERIALS | 0 |
|
SU1659217A1 |
