GB1436128A - Testing of tubular material - Google Patents

Testing of tubular material

Info

Publication number
GB1436128A
GB1436128A GB1721573A GB1721573A GB1436128A GB 1436128 A GB1436128 A GB 1436128A GB 1721573 A GB1721573 A GB 1721573A GB 1721573 A GB1721573 A GB 1721573A GB 1436128 A GB1436128 A GB 1436128A
Authority
GB
United Kingdom
Prior art keywords
tube
ballooning
pressure
occur
indicate
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
GB1721573A
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.)
Uponor Wirsbo AB
Original Assignee
Wirsbo Bruks AB
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 Wirsbo Bruks AB filed Critical Wirsbo Bruks AB
Priority to GB1721573A priority Critical patent/GB1436128A/en
Priority to DE19742416950 priority patent/DE2416950A1/en
Priority to FR7412467A priority patent/FR2225742B3/fr
Priority to SE7404775A priority patent/SE406809B/en
Publication of GB1436128A publication Critical patent/GB1436128A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2846—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for tubes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

1436128 Testing plastics tubing WIRSBO BRUKS AB 28 March 1974 [10 April 1973] 17215/73 Heading G1S Plastics tubing 10 hot from extrusion apparatus is moved through seals 3, 5 in a heating chamber 1 placed under vacuum by a suction hose 12 and regulating valve 11 so that any break or disconformity in the tube allows air to be drawn from the interior of the tube or along the outer surface into the vacuum chamber, thereby causing an increase in pressure which is shown on a meter 4. Major changes or ballooning of the tube due to pressure differential indicate for example either a substantial reduction in wall thickness permitting ballooning to occur, or a reduction in cross-linking forces thus permitting ballooning to occur by virtue of the more thermoplastic nature of the material. These effects may be enhanced by supplying gas under pressure to the inside of the tube. A second inlet 23 comprises a pressure switch 8 connected to an electric alarm circuit or relay (not shown). Automatic marking or indicating means may be provided to indicate the area of the fault.
GB1721573A 1973-04-10 1973-04-10 Testing of tubular material Expired GB1436128A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB1721573A GB1436128A (en) 1973-04-10 1973-04-10 Testing of tubular material
DE19742416950 DE2416950A1 (en) 1973-04-10 1974-04-08 METHOD AND DEVICE FOR TESTING PIPES
FR7412467A FR2225742B3 (en) 1973-04-10 1974-04-09
SE7404775A SE406809B (en) 1973-04-10 1974-04-09 METHOD AND DEVICE TO TEST THE UNIFORMITY OF A ROLL LENGTH OF POLYMER MATERIAL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1721573A GB1436128A (en) 1973-04-10 1973-04-10 Testing of tubular material

Publications (1)

Publication Number Publication Date
GB1436128A true GB1436128A (en) 1976-05-19

Family

ID=10091252

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1721573A Expired GB1436128A (en) 1973-04-10 1973-04-10 Testing of tubular material

Country Status (4)

Country Link
DE (1) DE2416950A1 (en)
FR (1) FR2225742B3 (en)
GB (1) GB1436128A (en)
SE (1) SE406809B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222687A (en) * 1988-09-13 1990-03-14 Giuseppe Bonfiglioli A method and apparatus for testing and/or verifying the tightness of filled and hermetically sealed containers
EP1109003A2 (en) * 1999-12-02 2001-06-20 Josef Messmann GmbH Method and device for the leak testing of porous pipes and the like
CN102853976A (en) * 2012-09-28 2013-01-02 武汉钢铁(集团)公司 Online leakage detection method and device thereof for heat treatment furnace radiant tube
CN103206943A (en) * 2012-01-17 2013-07-17 宝山钢铁股份有限公司 Method and device for detecting radiant tube deformation outside furnace

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222687A (en) * 1988-09-13 1990-03-14 Giuseppe Bonfiglioli A method and apparatus for testing and/or verifying the tightness of filled and hermetically sealed containers
EP1109003A2 (en) * 1999-12-02 2001-06-20 Josef Messmann GmbH Method and device for the leak testing of porous pipes and the like
EP1109003A3 (en) * 1999-12-02 2001-11-21 Josef Messmann GmbH Method and device for the leak testing of porous pipes and the like
CN103206943A (en) * 2012-01-17 2013-07-17 宝山钢铁股份有限公司 Method and device for detecting radiant tube deformation outside furnace
CN102853976A (en) * 2012-09-28 2013-01-02 武汉钢铁(集团)公司 Online leakage detection method and device thereof for heat treatment furnace radiant tube
CN102853976B (en) * 2012-09-28 2014-12-10 武汉钢铁(集团)公司 Online leakage detection method and device thereof for heat treatment furnace radiant tube

Also Published As

Publication number Publication date
FR2225742A1 (en) 1974-11-08
FR2225742B3 (en) 1977-02-11
SE406809B (en) 1979-02-26
DE2416950A1 (en) 1974-10-24

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee