IN162701B - - Google Patents
Info
- Publication number
- IN162701B IN162701B IN1046/CAL/83A IN1046CA1983A IN162701B IN 162701 B IN162701 B IN 162701B IN 1046CA1983 A IN1046CA1983 A IN 1046CA1983A IN 162701 B IN162701 B IN 162701B
- Authority
- IN
- India
- Prior art keywords
- tubular
- stretched
- heated
- beyond
- yield point
- Prior art date
Links
- 238000010438 heat treatment Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/154—Making multi-wall tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/003—Insulating arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Meat, Egg Or Seafood Products (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Thermal Insulation (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Supports For Pipes And Cables (AREA)
- Processing Of Meat And Fish (AREA)
- Earth Drilling (AREA)
- Packages (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
A tubular apparatus is assembled from inner and outer tubes or tubulars (14,12) which are connected at spaced locations (16,18) along their length. After heat treatment and other processing steps, either the inner or outer tube (14,12) is heated to reduce its yield strength and then stretched beyond its yield point but not beyond the yield point of the other tubular. The heat source is removed so that the stretched state is maintained. The tubular apparatus is thus prestressed with the inner tubular (14) under compressive prestressing when the inner tubular (14) has been heated and stretched, and the inner tubular (14) under tensile prestressing when the outer tubular (12) has been heated and stretched.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US41329082A | 1982-08-31 | 1982-08-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
IN162701B true IN162701B (en) | 1988-07-02 |
Family
ID=23636667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IN1046/CAL/83A IN162701B (en) | 1982-08-31 | 1983-08-29 |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0104789B1 (en) |
JP (1) | JPS6018877B2 (en) |
KR (1) | KR840005678A (en) |
AT (1) | ATE23461T1 (en) |
BR (1) | BR8304591A (en) |
CA (1) | CA1202578A (en) |
DE (1) | DE3367539D1 (en) |
IN (1) | IN162701B (en) |
PH (1) | PH20499A (en) |
TR (1) | TR21779A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0192785A1 (en) * | 1985-01-31 | 1986-09-03 | Bruno Dipl.-Ing. Zay | Process for industrially making prestressed and pre-insulated sleeves for pipes |
DE3605039A1 (en) * | 1986-02-18 | 1986-12-11 | Zay, Bruno, Dipl.-Ing., 4030 Ratingen | METHOD FOR THE PRODUCTION OF STEEL SHEATHING SHEETS AND THEIR LAYING IN PLASTIC SHEATHING TUBE SYSTEMS |
RU2707768C1 (en) * | 2018-12-05 | 2019-11-29 | Акционерное общество "Уральский научно-технологический комплекс" | Method of applying polyurethane coating on fuel tanks |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3511282A (en) * | 1966-02-07 | 1970-05-12 | Continental Oil Co | Prestressed conduit for heated fluids |
US3397745A (en) * | 1966-03-08 | 1968-08-20 | Carl Owens | Vacuum-insulated steam-injection system for oil wells |
US3574357A (en) * | 1969-02-27 | 1971-04-13 | Grupul Ind Pentru Foray Si Ext | Thermal insulating tubing |
US3693665A (en) * | 1970-01-28 | 1972-09-26 | Shell Oil Co | Pipeline for the transport of cold liquids |
US4130301A (en) * | 1975-01-27 | 1978-12-19 | General Electric Company | Double-walled well casing structure |
US4340245A (en) * | 1980-07-24 | 1982-07-20 | Conoco Inc. | Insulated prestressed conduit string for heated fluids |
-
1983
- 1983-08-25 BR BR8304591A patent/BR8304591A/en unknown
- 1983-08-25 JP JP58154259A patent/JPS6018877B2/en not_active Expired
- 1983-08-26 CA CA000435504A patent/CA1202578A/en not_active Expired
- 1983-08-29 IN IN1046/CAL/83A patent/IN162701B/en unknown
- 1983-08-29 PH PH29463A patent/PH20499A/en unknown
- 1983-08-30 KR KR1019830004062A patent/KR840005678A/en not_active Application Discontinuation
- 1983-08-31 TR TR21779A patent/TR21779A/en unknown
- 1983-08-31 AT AT83305014T patent/ATE23461T1/en not_active IP Right Cessation
- 1983-08-31 DE DE8383305014T patent/DE3367539D1/en not_active Expired
- 1983-08-31 EP EP83305014A patent/EP0104789B1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
TR21779A (en) | 1985-07-08 |
EP0104789B1 (en) | 1986-11-12 |
PH20499A (en) | 1987-01-21 |
EP0104789A1 (en) | 1984-04-04 |
JPS5986791A (en) | 1984-05-19 |
CA1202578A (en) | 1986-04-01 |
KR840005678A (en) | 1984-11-16 |
JPS6018877B2 (en) | 1985-05-13 |
DE3367539D1 (en) | 1987-01-02 |
ATE23461T1 (en) | 1986-11-15 |
BR8304591A (en) | 1984-04-03 |
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