JPS5633921A - Joint corrosion preventing method of coated steel pipe buried - Google Patents
Joint corrosion preventing method of coated steel pipe buriedInfo
- Publication number
- JPS5633921A JPS5633921A JP10905379A JP10905379A JPS5633921A JP S5633921 A JPS5633921 A JP S5633921A JP 10905379 A JP10905379 A JP 10905379A JP 10905379 A JP10905379 A JP 10905379A JP S5633921 A JPS5633921 A JP S5633921A
- Authority
- JP
- Japan
- Prior art keywords
- coated
- steel pipe
- joint
- sheet
- welding
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
- F16L58/181—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for non-disconnectible pipe joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/18—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using tubular layers or sheathings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/38—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses
- B29C63/42—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses using tubular layers or sheathings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
- F16L13/0254—Welded joints the pipes having an internal or external coating
- F16L13/0272—Welded joints the pipes having an internal or external coating having an external coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0049—Heat shrinkable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
- B29L2009/003—Layered products comprising a metal layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
PURPOSE:To prevent corrosion effectively at the joint buried of a steel pipe coated with a high-grade anticorrosion material by welding the joint after it is coated on the circumference thereof with a heat-shrinking plastic sheet surrounding the beveled section through a backing strip and covered with a waterproof clamping plate to be tied therearound. CONSTITUTION:The joint of a steel pipe is coated with an adiabatic material 5 in the proximity of the beveled section 3 after a backing strip is brought into contact with the circumference thereof which is clear of a coating layer 2 of a high-grade anticorrosion material. The adiabatic material layer is covered with a thermoplastic resin sheet 11 and then, coated with a heat-shrinking resin sheet 8 spreading over both coating layers 2 and 2 of pipes to be connected. To press the resin sheet 8 evenly, it is clamped with a clamping plate 14 in which a high-foaming soft plastic sheet 12 having a concave section 15 is bonded on a steel plate 7 or the like through a low-foaming hard plastic sheet 13. Under such a condition, while a welding is made at the beveled section 3, the sheet 8 is shrinked by the welding heat and adheres to the pipe body and the coating layers with an adhesive coated on the inner surface thereof.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10905379A JPS5633921A (en) | 1979-08-29 | 1979-08-29 | Joint corrosion preventing method of coated steel pipe buried |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10905379A JPS5633921A (en) | 1979-08-29 | 1979-08-29 | Joint corrosion preventing method of coated steel pipe buried |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5633921A true JPS5633921A (en) | 1981-04-04 |
JPS5754286B2 JPS5754286B2 (en) | 1982-11-17 |
Family
ID=14500404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10905379A Granted JPS5633921A (en) | 1979-08-29 | 1979-08-29 | Joint corrosion preventing method of coated steel pipe buried |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5633921A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6245990U (en) * | 1985-09-06 | 1987-03-20 | ||
JPH0273985U (en) * | 1988-11-22 | 1990-06-06 |
-
1979
- 1979-08-29 JP JP10905379A patent/JPS5633921A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5754286B2 (en) | 1982-11-17 |
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