PH20499A - Method of prestressing a tubular apparatus - Google Patents

Method of prestressing a tubular apparatus

Info

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
Application number
PH29463A
Inventor
Stuart E Reed
Original Assignee
Babcock & Wilcox Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Babcock & Wilcox Co filed Critical Babcock & Wilcox Co
Publication of PH20499A publication Critical patent/PH20499A/en

Links

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.
PH29463A 1982-08-31 1983-08-29 Method of prestressing a tubular apparatus PH20499A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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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