[go: up one dir, main page]

CN110544559A - Logging packaging pipe cable and preparation method thereof - Google Patents

Logging packaging pipe cable and preparation method thereof Download PDF

Info

Publication number
CN110544559A
CN110544559A CN201910924753.4A CN201910924753A CN110544559A CN 110544559 A CN110544559 A CN 110544559A CN 201910924753 A CN201910924753 A CN 201910924753A CN 110544559 A CN110544559 A CN 110544559A
Authority
CN
China
Prior art keywords
cable
pipe
packaging
well logging
equipment
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
Application number
CN201910924753.4A
Other languages
Chinese (zh)
Other versions
CN110544559B (en
Inventor
段建良
刘志坤
董健
刘祥
林越青
万玉石
刘佳俊
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.)
Xinda Kechuang (tangshan) Petroleum Equipment Co Ltd
Original Assignee
Xinda Kechuang (tangshan) Petroleum Equipment Co Ltd
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 Xinda Kechuang (tangshan) Petroleum Equipment Co Ltd filed Critical Xinda Kechuang (tangshan) Petroleum Equipment Co Ltd
Priority to CN201910924753.4A priority Critical patent/CN110544559B/en
Publication of CN110544559A publication Critical patent/CN110544559A/en
Application granted granted Critical
Publication of CN110544559B publication Critical patent/CN110544559B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00Communication cables or conductors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00Apparatus or processes specially adapted for manufacturing conductors or cables
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/0016Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22Sheathing; Armouring; Screening; Applying other protective layers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/24Sheathing; Armouring; Screening; Applying other protective layers by extrusion
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/2806Protection against damage caused by corrosion
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/40Insulated conductors or cables characterised by their form with arrangements for facilitating mounting or securing

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a well logging packaging pipe cable and a preparation method thereof, wherein the well logging packaging pipe cable comprises a packaging layer, a protection pipe, a filling layer and a cable which are sequentially arranged from outside to inside; the cross section of the packaging layer is polygonal; the manufacturing method of the logging packaging pipe cable mainly comprises two steps of processing and forming of a protection pipe, cable laying and processing of a packaging layer. The protective tube has the advantages of simple structure, low manufacturing cost and reasonable production process, the corrosion resistance of the protective tube is improved by the packaging layer, the cross section of the protective tube is polygonal, the contact and the grabbing of a well logging cable pushing machine are facilitated, the protective tube has higher yield load, and the overall compression resistance and tensile resistance are improved.

Description

Logging packaging pipe cable and preparation method thereof
Technical Field
The invention relates to the field of logging cables, in particular to a logging packaging pipe cable and a preparation method thereof.
Background
The logging cable can be used for logging, perforating, coring and other operations of various oil wells and gas wells, can also be used for aspects such as water conservancy hydrological measurement, coal field geological exploration, geothermal logging and the like, and is a connecting wire for bearing connection and measurement data transmission between a ground system and an underground instrument.
working condition is comparatively abominable among the current oil well operating mode, often is in the environment of corrosive medium such as high temperature, high pressure and oiliness gas to receive the restriction in the narrow and small space of oil well sleeve pipe, often the cable bends or corrosion damage in the installation, to the logging cable that length reaches kilometer even ten thousand meters, how improve the resistance to compression, tensile and the corrosion resistance of logging cable, be one and wait for the problem of solving urgently.
Disclosure of Invention
The invention aims to provide a logging packaging pipe cable and a preparation method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention discloses a well logging packaging pipe cable which comprises a packaging layer, a protection pipe and a cable which are sequentially arranged from outside to inside; the cross section of the packaging layer is polygonal.
further, the packaging layer is made of thermoplastic vulcanized rubber TPV materials.
Further, the protection pipe is made of 825 steel pipe materials.
Furthermore, the cable comprises an outer protective layer, an insulating layer and a wire core which are sequentially arranged from outside to inside.
Furthermore, the outer protective layer is made of polypropylene PP material.
Further, the insulating layer is made of Fluorinated Ethylene Propylene (FEP) materials.
A method for manufacturing the logging package tube cable comprises the following steps:
Step one, processing and forming a protection pipe and laying a cable: placing a steel coil raw material for producing the protection tube on steel band coiling equipment, placing the coiled and coiled cable on cable coiling equipment, and processing the starting end of the steel coil raw material into a whole set of the protection tube provided with the cable after sequentially passing through steel tube primary forming equipment, cable coiling equipment, steel tube laser welding equipment, nondestructive inspection equipment, steel tube drawing equipment and traction equipment; the protective pipe is coiled and wound under the action of a pipe cable coiling device so as to be used in the next procedure;
Step two, processing the packaging layer: placing the protection pipe to be packaged on a pipe cable coiling device, and sequentially passing the starting end of the protection pipe through a steel pipe straightening device, a steel pipe preheating device, a packaging extrusion device, a cooling device and a traction device to form a packaging layer; and the packaging tube cable is curled and coiled under the action of the coiling equipment.
Further, the steel coil raw material for producing the protection tube is subjected to alkaline hot water degreasing treatment.
Furthermore, the steel pipe preheating device comprises an air heater and a preheating pipeline which are communicated through a pipeline, two ends of the preheating pipeline are connected with plugs in a sealing mode, and the middle of each plug is provided with a pipe passing hole.
further, a die sleeve extrusion port of the packaging extrusion equipment for producing the packaging layer is set to be polygonal.
compared with the prior art, the invention has the beneficial technical effects that:
the protective tube has the advantages of simple structure, low manufacturing cost and reasonable production process, the corrosion resistance of the protective tube is improved by the packaging layer, the cross section of the protective tube is polygonal, the contact and the grabbing of a well logging cable pushing machine are facilitated, the protective tube has higher yield load, and the overall compression resistance and tensile resistance are improved.
Drawings
The invention is further illustrated in the following description with reference to the drawings.
FIG. 1 is a schematic diagram of a logging package umbilical of the present invention;
FIG. 2 is a schematic view of the production process of the protection tube forming and cable laying according to the present invention;
FIG. 3 is a schematic view of the process flow of the packaging layer of the present invention;
FIG. 4 is a schematic structural view of the steel pipe preheating apparatus of the present invention;
FIG. 5 is a schematic view of an extrusion process of the extrusion type extrusion grinding tool of the present invention;
FIG. 6 is a cross-sectional view of a die sleeve of an extruded abrasive article of the present invention;
FIG. 7 is a left side view of a die sleeve of an extruded abrasive article of the present invention;
FIG. 8 is a cross-sectional view of a mold core of the extruded abrasive article of the present invention;
Fig. 9 is a right side view of the die core of the die-type extrusion die of the present invention.
Description of reference numerals: 1. a packaging layer; 2. protecting the tube; 3. a cable; 301. an outer jacket; 302. an insulating layer; 303. a wire core; 4. a hot air blower; 5. preheating a pipeline; 6. a plug; 7. through the tube hole.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 to 9, the present embodiment discloses a well logging package tube cable, which includes a package layer 1, a protection tube 2, and a cable 3, which are sequentially arranged from outside to inside. The protective tube 2 is protected by the packaging layer 1, the corrosion resistance of the protective tube 2 is improved, the protective tube 2 has higher yield load, and the overall compression resistance and tensile resistance are improved. The cross section design of encapsulation layer 1 increases area of contact for the polygon, makes things convenient for the logging cable to impel the machine contact to snatch, makes that the pipe cable can be better fix on the machine.
In the present embodiment, the cross section of the encapsulation layer 1 is rectangular, and the encapsulation layer 1 is made of thermoplastic vulcanizate TPV material. The protection tube 2 is made of 825 steel tube material. The cable 3 is used for connecting instrument equipment transmission signal in the pit, and the cable 3 includes outer jacket 301, insulating layer 302 and sinle silk 303 that outside-in set gradually. In this embodiment, the outer sheath 301 is made of polypropylene PP. The insulating layer 302 is made of fluorinated ethylene propylene copolymer FEP material. The outer protective layer 301 can perform the protection functions of insulation, flame retardance, corrosion prevention, fixation and the like on the cladding. The production of the cable 3 is carried out by means of a cable extruder, which is conventional and can be carried out completely by the person skilled in the art.
As shown in fig. 2 to 3, a method for manufacturing the above-mentioned logging package umbilical includes the following steps:
Step one, processing and forming a protection pipe and laying a cable: placing a steel coil raw material for producing the protection tube 2 on a steel band coiling device, placing a curled and coiled cable 3 on a cable coiling device, and processing a whole set of the protection tube 2 provided with the cable 3 after the initial end of the steel coil raw material sequentially passes through a steel tube primary forming device, a cable coiling device, a steel tube laser welding device, a nondestructive inspection device, a steel tube drawing device and a steel tube traction device; the protection pipe 2 is coiled and wound under the action of the pipe cable coiling equipment to be used in the next process.
the steel band is processed into the U type behind the preliminary former of steel pipe, and protection tube 2 is put into through the opening of U type to cable 3, need pass through a leading wheel putting into the in-process, and this leading wheel pushes down cable 3 and makes its bottom surface that is close to cable pillar 2, high temperature damage cable 3 when avoiding laser welding. The steel belt, cable and pipe cable reeling equipment is used for placing raw materials, semi-finished products and reeling or unreeling the materials. The laser welding apparatus is used to weld the butt joint gap of the protection pipe 2. The protection tube 2 after welding is subjected to nondestructive testing by eddy current for nondestructive testing. The drawing apparatus draws the protective tube 2 to a desired size using a die of a certain specification, and the force required for the drawing is provided by a drawing wheel device. The steel pipe pulling device provides a pulling force for advancing the protection pipe 2.
After the preliminary shaping of protection tube 2, its initiating terminal changes through steel pipe drawing equipment back pipe diameter, and at this moment, equipment is shut down and will be put into preliminary fashioned protection tube 2 with 3 initiating terminals of cable, and manual cable 3 of always carrying forward is pushed up at protection tube 2 shrink position department until the initiating terminal of cable 3, and the shrink position of protection tube 2 plays the effect of pressing from both sides tight cable 3, and equipment start this moment, and cable 3 is along with the protection tube 2 forward motion of drawing.
step two, processing the packaging layer: the method comprises the steps of placing a protection pipe 2 to be packaged on a pipe cable reeling device, enabling the starting end of the protection pipe 2 to sequentially pass through a steel pipe straightening device, a steel pipe preheating device, a packaging extrusion device, a cooling device and a pipe cable traction device to form a packaging layer 1, and curling and rolling the packaging pipe cable under the action of the reeling device.
it should be noted that the steel pipe straightening device adjusts the coiled pipe cable into a horizontal straight line through the upper and lower rollers. The packaging extrusion equipment heats thermoplastic vulcanized rubber TPV material particles, and the raw materials are melted and fused into sol after being heated to a corresponding temperature, so that the plasticity is strong. The protective tube 2 is passed through an extrusion device to form the encapsulation layer 1. The protection tube 2 is packaged and extruded and then enters a cold water tank for cooling, solidifying and molding. In this embodiment, the cold water tank is a cooling device. In this embodiment, the steel tube primary forming device is a stainless steel tube machine manufactured by Guangdong Yangcheng mechanical science and technology GmbH, and the laser welding device is Shenzhen Union win laser sharps GmbH. The above production devices are all in the prior art, and those skilled in the art can purchase existing devices from the market, which is not described again.
As shown in fig. 4, the steel tube preheating device comprises an air heater 4 and a preheating pipeline 5 which are communicated through a pipeline, wherein two ends of the preheating pipeline 5 are hermetically connected with plugs 6, the middle part of each plug 6 is provided with a pipe passing hole 7, the protection pipe 2 penetrates through the pipe passing hole 7, and the air heater 4 continuously blows hot air into the preheating pipeline 5 to preheat the naked protection pipe 2.
As shown in fig. 5 and 9, the packaging extrusion device adopts a wire and cable extruder, and the extrusion die adopts a squeeze type extrusion grinding tool. The extrusion type extrusion grinding tool comprises a die sleeve and a die core which are used in a matched mode, the die sleeve and the die core belong to the prior art, the whole structure of the extrusion type extrusion grinding tool is the same as that of the extrusion type extrusion grinding tool on the market, and the difference is that an extrusion opening of the die sleeve is a polygon so that the cross section of an encapsulation layer 1 is extruded and then the polygon is formed. In this embodiment, the extrusion opening of the die case is rectangular. The packaging layer 1 can be added with pigment during manufacturing so as to distinguish the packaging tube cable during use. In order to further complement and optimize the manufacturing method, the steel coil raw material for producing the protection tube 2 is degreased by alkaline hot water to remove impurities on the surface of the steel strip.
In this embodiment, the technical parameters of a specific type of packaged umbilical are shown in table 1.
Table 1 packaged pipe cable parameter table
setting production parameters:
(1) Production parameters of step one
The steel strip discharging speed is 0.8-1.2 m/min. The cable pay-off speed is 0.8-1.2 m/min. The parameters of the laser welding equipment are outer protective gas flow of 6-10L/min (Ar), inner protective gas flow of 2-4L/min (Ar), power of 800 +/-200W, welding speed of 0.8-1.2 m/min and focal length of 223 mm.
(2) Production parameters of step two
the tape releasing speed of the pipe cable curling equipment is 0.8-1.2 m/min. Speed of the umbilical pulling device the speed of the pay-off of the umbilical crimping device is consistent. The temperature of the steel pipe preheating device was set to 300 ℃.
the above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims (10)

1. a well logging package tube cable which is characterized in that: comprises a packaging layer (1), a protection tube (2) and a cable (3) which are arranged from outside to inside in sequence;
The cross section of the packaging layer (1) is polygonal.
2. the well logging package umbilical of claim 1, wherein: the packaging layer (1) is made of thermoplastic vulcanized rubber TPV material.
3. the well logging package umbilical of claim 1, wherein: the protection pipe (2) is made of 825 steel pipe materials.
4. The well logging package umbilical of claim 1, wherein: the cable (3) comprises an outer protective layer (301), an insulating layer (302) and a wire core (303) which are sequentially arranged from outside to inside.
5. The well logging package umbilical of claim 4, wherein: the outer protective layer (301) is made of a polypropylene (PP) material.
6. The well logging package umbilical of claim 4, wherein: the insulating layer (302) is made of Fluorinated Ethylene Propylene (FEP) copolymer material.
7. A method of making the sealed well logging umbilical of claim 1, comprising the steps of:
Step one, processing and forming a protection pipe and laying a cable: placing a steel coil raw material for producing the protection tube (2) on steel belt coiling equipment, placing the cable (3) which is coiled and coiled on cable coiling equipment, and processing the starting end of the steel coil raw material into a complete set of the protection tube (2) provided with the cable (3) after sequentially passing through steel tube primary forming equipment, cable coiling equipment, steel tube laser welding equipment, nondestructive inspection equipment, steel tube drawing equipment and traction equipment;
The protection pipe (2) is coiled and wound under the action of a pipe cable coiling device so as to be used in the next procedure;
step two, processing the packaging layer: placing the protection pipe (2) to be packaged on a pipe cable coiling device, and sequentially passing the starting end of the protection pipe (2) through a steel pipe straightening device, a steel pipe preheating device, a packaging extrusion device, a cooling device and a traction device to form a packaging layer (1);
And the packaging tube cable is curled and coiled under the action of the coiling equipment.
8. The method of making a well logging package umbilical of claim 7, wherein: the steel coil raw material for producing the protection tube (2) is subjected to alkaline hot water degreasing treatment.
9. the method of making a well logging package umbilical of claim 7, wherein: the steel pipe preheating device comprises an air heater (4) and a preheating pipeline (5) which are communicated through a pipeline, two ends of the preheating pipeline (5) are connected with plugs (6) in a sealing mode, and the middle of each plug (6) is provided with a pipe passing hole (7).
10. The method of making a well logging package umbilical of claim 7, wherein: the die sleeve extrusion port of the packaging extrusion equipment for producing the packaging layer (1) is polygonal.
CN201910924753.4A 2019-09-27 2019-09-27 Logging packaging cable and preparation method thereof Active CN110544559B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910924753.4A CN110544559B (en) 2019-09-27 2019-09-27 Logging packaging cable and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910924753.4A CN110544559B (en) 2019-09-27 2019-09-27 Logging packaging cable and preparation method thereof

Publications (2)

Publication Number Publication Date
CN110544559A true CN110544559A (en) 2019-12-06
CN110544559B CN110544559B (en) 2024-02-23

Family

ID=68714788

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910924753.4A Active CN110544559B (en) 2019-09-27 2019-09-27 Logging packaging cable and preparation method thereof

Country Status (1)

Country Link
CN (1) CN110544559B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111399153A (en) * 2020-05-12 2020-07-10 信达科创(唐山)石油设备有限公司 Logging packaged optical fiber pipe cable and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107516552A (en) * 2017-08-30 2017-12-26 中天科技装备电缆有限公司 A kind of wear-resisting resistance to torsion environment-friendly type cable for charging electric automobiles and its preparation technology
CN108172329A (en) * 2017-12-22 2018-06-15 江苏中天科技股份有限公司 Oil well detection cable and its manufacturing method
CN208637203U (en) * 2018-07-24 2019-03-22 苏州道旺电子科技有限公司 A spring cable for large-section power transmission
CN210200369U (en) * 2019-09-27 2020-03-27 信达科创(唐山)石油设备有限公司 Well logging packaging pipe cable

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107516552A (en) * 2017-08-30 2017-12-26 中天科技装备电缆有限公司 A kind of wear-resisting resistance to torsion environment-friendly type cable for charging electric automobiles and its preparation technology
CN108172329A (en) * 2017-12-22 2018-06-15 江苏中天科技股份有限公司 Oil well detection cable and its manufacturing method
CN208637203U (en) * 2018-07-24 2019-03-22 苏州道旺电子科技有限公司 A spring cable for large-section power transmission
CN210200369U (en) * 2019-09-27 2020-03-27 信达科创(唐山)石油设备有限公司 Well logging packaging pipe cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111399153A (en) * 2020-05-12 2020-07-10 信达科创(唐山)石油设备有限公司 Logging packaged optical fiber pipe cable and preparation method thereof

Also Published As

Publication number Publication date
CN110544559B (en) 2024-02-23

Similar Documents

Publication Publication Date Title
CN111485830A (en) Packaging pipe cable with identification mark and preparation method thereof
CN105448395B (en) The extra large cable joint and its online Transition Technology of a kind of different sheathed structures
CN106848990B (en) A kind of docking calculation of 10kV twisted polyethylene cables
US7954518B2 (en) Tear cord for jacketed tube
US10001614B2 (en) Hybrid fiber optic and graphene cable
US7581565B1 (en) Tear cord for jacketed tube
CN110544560B (en) Multifunctional logging packaging cable and preparation method thereof
CN111399153A (en) Logging packaged optical fiber pipe cable and preparation method thereof
CN210200369U (en) Well logging packaging pipe cable
CN110544559A (en) Logging packaging pipe cable and preparation method thereof
CN210200370U (en) Multifunctional logging packaging pipe cable
KR20070116838A (en) Method and apparatus for manufacturing optical cable and optical cable manufactured thereby
US10205308B2 (en) Method for removing a cable core from a cable sheath
CN212642619U (en) Packaging pipe cable with identification mark
CN100494465C (en) Annealing process and equipment used in the production of copper-clad aluminum or copper-clad aluminum-magnesium wire
CN109176035B (en) Special processing equipment for ultra-long thermocouple
CN212229256U (en) Well logging packaging optical fiber pipe cable
JPS584105A (en) Cable manufacturing method
CN205140617U (en) Apparatus for producing of flexible fireproof cable
CN105042208B (en) Multiple tube and its moulding process
CN205582592U (en) Rubber sheath cable head water blocking device
EP2755211A1 (en) Method and arrangement of crosslinking or vulcanizing an elongate element
CN215343748U (en) Packaged pipe cable with color identification band
FI73807B (en) FOERFARANDE FOER KONTINUERLIG FRAMSTAELLNING AV VAERMEISOLERADE LEDNINGSROER.
CN109300602B (en) Pre-buried composite pipe cable and manufacturing method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant