GB1244920A - A process for making a composite pre-stressed asbestos-cement pipe - Google Patents

A process for making a composite pre-stressed asbestos-cement pipe

Info

Publication number
GB1244920A
GB1244920A GB61422/69A GB6142269A GB1244920A GB 1244920 A GB1244920 A GB 1244920A GB 61422/69 A GB61422/69 A GB 61422/69A GB 6142269 A GB6142269 A GB 6142269A GB 1244920 A GB1244920 A GB 1244920A
Authority
GB
United Kingdom
Prior art keywords
asbestos
cement pipe
coating
pipe body
making
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.)
Expired
Application number
GB61422/69A
Inventor
Pierre Desnos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eternit De Rech S Tech S E R T
Original Assignee
Eternit De Rech S Tech S E R T
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 Eternit De Rech S Tech S E R T filed Critical Eternit De Rech S Tech S E R T
Publication of GB1244920A publication Critical patent/GB1244920A/en
Expired legal-status Critical Current

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
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/06—Coatings characterised by the materials used by cement, concrete, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/70—Methods or machines specially adapted for the production of tubular articles by building-up from preformed elements
    • B28B21/72—Producing multilayer tubes
    • 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
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • 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
    • F16L9/00—Rigid pipes
    • F16L9/08—Rigid pipes of concrete, cement, or asbestos cement, with or without reinforcement

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Laminated Bodies (AREA)

Abstract

1,244,920. Manufacture of prestressed coated asbestos-cement pipe. SOC. ETERNIT DE RECHERCHES TECHNIQUES. 17 Dec., 1969 [24 Dec., 1968], No. 61422/69. Heading F2P. In a process for making a composite prestressed asbestos-cement pipe an asbestos cement pipe body 1 is shrunk by removing its free water content, a coating of material 2 is wound under tension on to the pipe body 1 which is then permitted to expand by regaining a free water content from atmospheric moisture, the expansion causing the coating 2 to exert a compressive force on the pipe body 1. The coating 2 may be metallic or mineral or organic strands embedded in thermosetting resin which are wrapped while tensioned and the tension maintained until the resin hardens. The strands may be of asbestos, carbon fibre, metals, ceramic, cotton, carbon, polymers, polyesters or polyolefines and the resins may be for example phenoplasts, aminoplasts, polyester, ethoxyline, polyurethane.
GB61422/69A 1968-12-24 1969-12-17 A process for making a composite pre-stressed asbestos-cement pipe Expired GB1244920A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR180193A FR1598650A (en) 1968-12-24 1968-12-24

Publications (1)

Publication Number Publication Date
GB1244920A true GB1244920A (en) 1971-09-02

Family

ID=8658922

Family Applications (1)

Application Number Title Priority Date Filing Date
GB61422/69A Expired GB1244920A (en) 1968-12-24 1969-12-17 A process for making a composite pre-stressed asbestos-cement pipe

Country Status (7)

Country Link
BE (1) BE743090A (en)
ES (1) ES372998A1 (en)
FR (1) FR1598650A (en)
GB (1) GB1244920A (en)
LU (1) LU60066A1 (en)
NL (1) NL6919184A (en)
OA (1) OA03186A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112959481B (en) * 2021-02-03 2022-06-21 张家界涵睿新材料科技有限公司 Automatic equipment for culvert pipe production

Also Published As

Publication number Publication date
FR1598650A (en) 1970-07-06
ES372998A1 (en) 1972-03-16
OA03186A (en) 1970-12-15
BE743090A (en) 1970-05-14
LU60066A1 (en) 1970-02-23
NL6919184A (en) 1970-06-26

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