FIELD: pipeline engineering.
SUBSTANCE: heat insulated pipe comprises inner layer made of polyethylene of low or high pressure, 7.5-15-mm foam polyethylene second layer applied on the first layer, 1-4 sheets or belt made of foam polyethylene and applied on the second layer, and polyethylene shell with transverse corrugations whose inner surface of lesser diameter is in a contact with the surface defined by the outer polyethylene sheets or belt.
EFFECT: enhanced reliability and prolonged service life.
4 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| THERMAL-INSULATED PIPE FOR HEATING AND/OR WATER-SUPPLY SYSTEMS OF BUILDING AND STRUCTURES | 2006 |
|
RU2326291C1 |
| DEVICE FOR BUTT-JOINT WATERPROOFING | 2002 |
|
RU2210658C1 |
| END CAP FOR TECHNOLOGICAL HOLE IN HEAT INSULATION LINING | 2001 |
|
RU2188917C1 |
| WET SEAL FOR BUTT JOINTS | 2001 |
|
RU2188911C1 |
| SHAFT PACKAGE | 2001 |
|
RU2182201C1 |
| WET SEAL FOR BUTT JOINTS | 2001 |
|
RU2188913C1 |
| GUIDING PROFILE | 2001 |
|
RU2188926C1 |
| ANTIFRICTION COAT FOR GUIDE PROFILE | 2001 |
|
RU2188927C1 |
| SHAPED SECTION OF SEWER PIPE-LINE | 2001 |
|
RU2180382C1 |
| WET SEAL FOR BUTT JOINTS | 2001 |
|
RU2188912C1 |
