PH20499A - Method of prestressing a tubular apparatus - Google Patents
Method of prestressing a tubular apparatusInfo
- Publication number
- PH20499A PH20499A PH29463A PH29463A PH20499A PH 20499 A PH20499 A PH 20499A PH 29463 A PH29463 A PH 29463A PH 29463 A PH29463 A PH 29463A PH 20499 A PH20499 A PH 20499A
- Authority
- PH
- Philippines
- Prior art keywords
- tubular
- stretched
- prestressing
- heated
- beyond
- 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)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Meat, Egg Or Seafood Products (AREA)
- Thermal Insulation (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Supports For Pipes And Cables (AREA)
- Load-Engaging Elements For Cranes (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 |
---|---|
PH20499A true PH20499A (en) | 1987-01-21 |
Family
ID=23636667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PH29463A PH20499A (en) | 1982-08-31 | 1983-08-29 | Method of prestressing a tubular apparatus |
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 JP JP58154259A patent/JPS6018877B2/en not_active Expired
- 1983-08-25 BR BR8304591A patent/BR8304591A/en unknown
- 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 DE DE8383305014T patent/DE3367539D1/en not_active Expired
- 1983-08-31 EP EP83305014A patent/EP0104789B1/en not_active Expired
- 1983-08-31 TR TR21779A patent/TR21779A/en unknown
- 1983-08-31 AT AT83305014T patent/ATE23461T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
TR21779A (en) | 1985-07-08 |
JPS6018877B2 (en) | 1985-05-13 |
CA1202578A (en) | 1986-04-01 |
EP0104789A1 (en) | 1984-04-04 |
ATE23461T1 (en) | 1986-11-15 |
EP0104789B1 (en) | 1986-11-12 |
KR840005678A (en) | 1984-11-16 |
IN162701B (en) | 1988-07-02 |
BR8304591A (en) | 1984-04-03 |
DE3367539D1 (en) | 1987-01-02 |
JPS5986791A (en) | 1984-05-19 |
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