CN107489832A - A kind of tensile force type pipe joint and connection method and purposes - Google Patents

A kind of tensile force type pipe joint and connection method and purposes Download PDF

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Publication number
CN107489832A
CN107489832A CN201710708293.2A CN201710708293A CN107489832A CN 107489832 A CN107489832 A CN 107489832A CN 201710708293 A CN201710708293 A CN 201710708293A CN 107489832 A CN107489832 A CN 107489832A
Authority
CN
China
Prior art keywords
nut
hole
connecting leg
pipe joint
fittings body
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.)
Pending
Application number
CN201710708293.2A
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Chinese (zh)
Inventor
王奎东
陆建忠
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.)
HAIYAN PIPE MEMBER MANUFACTURING Co Ltd
Original Assignee
HAIYAN PIPE MEMBER MANUFACTURING 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 HAIYAN PIPE MEMBER MANUFACTURING Co Ltd filed Critical HAIYAN PIPE MEMBER MANUFACTURING Co Ltd
Priority to CN201710708293.2A priority Critical patent/CN107489832A/en
Publication of CN107489832A publication Critical patent/CN107489832A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/06Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/065Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends the wedging action being effected by means of a ring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/06Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/07Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends adapted for use in socket or sleeve connections

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

The present invention provides a kind of tensile force type pipe joint and connection method and purposes, and the tensile force type pipe joint includes fittings body, nut, sealing ring and pulling sleeve, and its simple in construction, good airproof performance, anti-pull-out force are high.Suitable for the Large Diameter Pipeline sheet-metal duct that outer tube diameter is 145 225mm, wall thickness is 1.5 2.5mm, welding, without flange;Employ pulling sleeve, the front end of pulling sleeve is with a circle seam, pulling sleeve is being connected the incision of outer diameter tube by the displacement of taper lock tieholen under the conditions of the inner cone of nut to complete pulling force loop port, to prevent the pull-off by connecting leg road of pipe joint, forms the sealing pipeline of medium conveying.

Description

A kind of tensile force type pipe joint and connection method and purposes
Technical field
The present invention relates to a kind of pipe joint and connection method and purposes, and in particular to a kind of tensile force type pipe joint and connection side Method and purposes, it is mainly arranged in the pipeline of conveying air, as the pipeline can connect with air compressor.
Background technology
Pipe joint is the fastening means between pipeline and pipeline, is the tie point that can be dismounted between element and pipeline. Indispensable key player is act as in pipe fitting, it is one of two main composition parts of hydraulic pipeline.Pipe joint has Various species, conventional pipe joint can be generally divided into two kinds of hard pipe joint and hose coupling.If according to pipe joint and pipe The connected mode in road is divided, and hard pipe joint has three kinds of flared type, bite type and welded type, and hose coupling is mainly then attaching type glue Pipe joint.
Publication date is on December 8th, 2015, Publication No. CN204879137U Chinese patent, discloses a kind of antiseep Anticorrosive bimetallic transition pipe joint, belong to pipeline welding interconnection technique field.A kind of anticorrosive bimetallic transition conduit of antiseep Joint, it is tubular structure, it is characterised in that in aluminium, aluminium alloy, titanium or titanium alloy including internal transition zone and outer wrap Any noncorroding metal layer (40), axis direction of the transition zone along pipe be followed successively by aluminium-titanium-steel, aluminium alloy-titanium-steel, Titanium-titanium-steel or the cyclic structure superimposion of titanium alloy-titanium-steel material form.The utility model is multiple using explosive welding processing The technology of condensation material, make it have airtightness features, and be processed as meeting by different monometallic flat board metallurgical welds together The transitional connection pipe joint design of requirement of engineering.The utility model effectively prevents weld interface ripple whirlpool cavity seepage to ask Topic, improve the reliability of transition pipe joint high sealing characteristic;The germinating of face crack is effectively prevented, improves fatigability Energy and low-temperature impact resistance;Improve the durability of transit joint;The counterbore of monometallic pipe insertion welding is devised in structure, Have the function that fixed pipe fitting position, be easy to welding procedure.After transit joint welded and installed, it is not necessary to regular maintenance.The pipe connects Head firmly installs, but installs complexity and can not realize dismounting.
It is existing that external diameter can only be accomplished using incision sealing and the caliber of the pipeline of pulling force sealing structure, current maximum 50mm, more than 50mm, the connection of generally use flange or welding, complicated, installation is complicated, operation inconvenience, using inadequate Flexibly.In the case where wall is thin, if caliber is big, in incision sealing and pulling force sealing, when being also not cut into outer wall, tube wall is just It has been deformed that, sealing effectiveness can not be realized.
The content of the invention
It is an object of the invention to overcome above shortcomings in the prior art, and provide a kind of reasonable in design Tensile force type pipe joint and connection method and purposes, its simple in construction, good airproof performance, anti-pull-out force are high.
Technical scheme is used by the present invention solves the above problems:A kind of tensile force type pipe joint, including fittings body, it is described The both ends outer wall of fittings body is provided with external screw thread, and the fittings body is provided at both ends with fittings body through hole, it is characterised in that:Also include Nut, sealing ring and pulling sleeve;The fittings body through hole is connected with No.1 cylindrical hole, and the aperture of the No.1 cylindrical hole is big In fittings body through hole;A circle projection is formed on the middle hole wall of the fittings body through hole;The fittings body is provided with turret head;Institute State nut and be provided with nut through hole, internal thread part that the nut through hole includes being sequentially connected, No. two cylindrical holes, cone lockings Hole;The internal thread part of the nut is provided with internal thread;The aperture of No. two cylindrical holes is more than the aperture of internal thread part, institute The maximum diameter of hole for stating taper lock tieholen is less than the aperture of No. two cylindrical holes, between the taper lock tieholen and No. two cylindrical holes Form a circle boss;The aperture of the taper lock tieholen No. two cylindrical connection ends since with tapering into and by connecting leg The aperture in road is equal;The nut is provided with turret head;The sealing ring and pulling sleeve be sequentially distributed in one end of fittings body and Between nut, sealing ring is arranged in No.1 cylindrical hole;The front end of the pulling sleeve is provided with a circle seam, the pulling sleeve Rear end set it is fluted, groove and the fittings body clamping by sealing ring fix No.1 cylindrical hole in;The fittings body and Nut is connected through a screw thread, and the seam of the pulling sleeve is located at nut and by between the tube wall in connecting leg road, seam and cone locking The hole wall contact in hole, and curve inwardly and compressed by connecting leg road so as to being carried out by connecting leg road under the hole wall effect of taper lock tieholen It is fixed.
Preferably, nut of the present invention is locking nut.
Preferably, sealing ring of the present invention is single sealing ring or Double seal ring.
Preferably, the front end of the seam of the present invention is acute angle shape.
Preferably, between angular range is 10 ° -30 ° between two buses in cone locking hole axle section of the present invention.
Preferably, the pore diameter range of fittings body through hole of the present invention is 6-200mm.
Preferably, the aperture of fittings body through hole of the present invention and the minimum-value aperture of taper lock tieholen are equal.
Preferably, the external diameter of the present invention by connecting leg road is 145-225mm, wall thickness 1.5-2.5mm.
A kind of the characteristics of connection method of tensile force type pipe joint, is:Use described tensile force type pipe joint, the connection The step of method, is as follows:It is 145-225mm, wall thickness 1.5-2.5mm by the external diameter in connecting leg road, by the external diameter and wall thickness in connecting leg road The ratio between reach 100:1, nut through hole, pulling sleeve, sealing ring and fittings body are passed through by connecting leg road, both sides are first placed in by connecting leg road At the both ends of connector, both without using welding, also connected without using flange, only by turn nut fix sealing ring and Pulling sleeve;The displacement of the taper lock tieholen of nut, seam curve inwardly compression by connecting leg under the hole wall effect of taper lock tieholen The outer wall in road, it is indeformable by the inwall in connecting leg road, so as to being fixed and being sealed by connecting leg road, prevent pulling out by connecting leg road It is de-.
A kind of purposes of tensile force type pipe joint, its feature are:Using described tensile force type pipe joint, due to by connecting leg road External diameter and the ratio between wall thickness reach 100:1, during to being fixed and being sealed by connecting leg road, by the wall in connecting leg road by Easily it is deformed to pressure, the ingenious cooperation of the invention by nut and pulling sleeve, only by rotating nut, you can realize To the function of being fixed and sealed by the outer wall in connecting leg road, can ensure that it is indeformable by the inwall in connecting leg road, without welding and In the case of being connected without using flange, it is possible to realize being fixed and being sealed by connecting leg road to Large Diameter Pipeline and thin pipe wall Effect, to those skilled in the art, reality pipeline connection on there is breakthrough meaning, be advantageous to Large Diameter Pipeline with The pipeline connection of thin pipe wall is more convenient and flexible.
The present invention compared with prior art, has advantages below and effect:It is 145-225mm, wall thickness suitable for outer tube diameter For 1.5-2.5mm Large Diameter Pipeline sheet-metal duct, welding, without flange;Pulling sleeve is employed, the front end of pulling sleeve is with a circle Seam, pulling sleeve complete pulling force loop port outside by connecting leg road under the conditions of the inner cone of nut by the displacement of taper lock tieholen The incision in footpath, to prevent the pull-off by connecting leg road of pipe joint, the sealing pipeline of medium conveying is formed, its simple in construction, sealing Reliably, anti-pull-out force is high, widely applicable.O-ring seals are formula of filling a vacancy, and can play reliable sealing function, the tolerance of O-ring seals The reliability of O-ring seals is not influenceed;Incision set is that resistance to plucking takes off part, prevents pipeline pull-off.And 45 degree of angles of the invention turn half tooth Incision can be achieved.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the cross section structure diagram of fittings body of the embodiment of the present invention.
Fig. 3 is the side structure schematic view of fittings body of the embodiment of the present invention.
Fig. 4 is the cross section structure diagram of nut of the embodiment of the present invention.
Fig. 5 is the side structure schematic view of nut of the embodiment of the present invention.
Fig. 6 is the cross section structure diagram of pulling sleeve of the embodiment of the present invention.
Fig. 7 is the side structure schematic view of pulling sleeve of the embodiment of the present invention.
Fig. 8 is the cross section structure diagram of list sealing ring of the embodiment of the present invention.
Fig. 9 is the side structure schematic view of list sealing ring of the embodiment of the present invention.
Figure 10 is the cross section structure diagram of Double seal ring of the embodiment of the present invention.
Figure 11 is the side structure schematic view of Double seal ring of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is described in further detail by embodiment, and following examples are to this hair Bright explanation and the invention is not limited in following examples.
Embodiment.
Referring to Fig. 1 to Figure 11, the tensile force type pipe joint in the present embodiment includes fittings body 1, nut 4, sealing ring 2 and pulling force Set 3.
The both ends outer wall of the present embodiment center tap body 1 is provided with external screw thread 12, and the both ends of the fittings body 1 are additionally provided with and connect Head body through hole 6.Fittings body through hole 6 is connected with No.1 cylindrical hole 7, and the aperture of the No.1 cylindrical hole 7 leads to more than fittings body Hole 6.Turret head 9 is provided with fittings body 1 and nut 4, for spanner erection joint body 1, nut 4 and pipeline 5.Fittings body leads to A circle projection 17 is formed on the middle hole wall in hole 6, projection 17 plays a part of targeted duct 5.
Nut 4 in the present embodiment is locking nut.Nut 4 is provided with nut through hole, and nut through hole includes being sequentially connected Internal thread part 14, No. two cylindrical holes 15, taper lock tieholens 8.Internal thread 13 is provided with internal thread part 14.No. two cylinders The aperture in hole 15 is more than the aperture of internal thread part 14, and the maximum diameter of hole of taper lock tieholen 8 is less than the aperture of No. two cylindrical holes 15, A circle boss 16 is formed between taper lock tieholen 8 and No. two cylindrical holes 15.The aperture of taper lock tieholen 8 from No. two cylinders The connection end in hole 15 starts to taper into equal with by the aperture in connecting leg road 5.It is 145-225mm by the external diameter in connecting leg road 5, wall Thickness is 1.5-2.5mm, and wall thickness accepted value is 2mm.
Sealing ring 2 and pulling sleeve 3 in the present embodiment are sequentially distributed between one end of fittings body 1 and nut 4, sealing ring 2 can be that single sealing ring can also be Double seal ring.Sealing ring 2 is arranged in No.1 cylindrical hole 7.The front end of pulling sleeve 3 is set A circle seam 10 is equipped with, the front end of seam 10 is acute angle shape.The rear end setting fluted 11 of pulling sleeve 3, groove 11 and fittings body 1 Clamping fixes sealing ring 2 in No.1 cylindrical hole 7.Fittings body 1 and nut 4 are connected through a screw thread, the seam of the pulling sleeve 3 10 in nut 4 and by between the tube wall in connecting leg road 5, and seam 10 contacts with the hole wall of taper lock tieholen 8, and in taper lock tieholen 8 Hole wall effect under curve inwardly.
Between angular range is 10 ° -30 ° between taper lock tieholen 8 shaft section, two buses in the present embodiment.Fittings body The aperture of through hole 6 and the minimum-value aperture of taper lock tieholen 8 are equal.
A kind of connection method of tensile force type pipe joint, step are as follows:By connecting leg road 5 through nut through hole, pulling sleeve 3, close Seal 2, fittings body 1, both sides are first fixed on the both ends of connector 1 by connecting leg road 5, then turn nut 4, fix sealing ring 2 With pulling sleeve 3;With the displacement of the taper lock tieholen 8 of nut 4, seam 10 is inwardly curved under the hole wall effect of taper lock tieholen 8 Song is compressed by connecting leg road so as to being fixed and being sealed by connecting leg road, to prevent the pull-off by connecting leg road of pipe joint.This hair Bright 45 degree of angles turn half tooth and incision can be achieved.
The purposes of tensile force type pipe joint of the present invention is:Using described tensile force type pipe joint, due to by the outer of connecting leg road The ratio between footpath and wall thickness reach 100:1, during to being fixed and being sealed by connecting leg road, pressed by the wall in connecting leg road Power is easily deformed, the ingenious cooperation of the invention by nut and pulling sleeve, only by rotating nut, you can is realized to quilt The function that the outer wall in connecting leg road is fixed and sealed, can ensure that it is indeformable by the inwall in connecting leg road, without welding and need not In the case of being connected using flange, it is possible to realize the effect for being fixed and being sealed by connecting leg road to Large Diameter Pipeline and thin pipe wall Fruit, to those skilled in the art, there is breakthrough meaning in the pipeline connection of reality, be advantageous to Large Diameter Pipeline and thin The pipeline connection of tube wall is more convenient and flexible.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components, it is named Title etc. can be different, and the above content described in this specification is only to structure example explanation of the present invention.It is all according to The equivalence changes or simple change done according to the construction described in inventional idea of the present invention, feature and principle, are included in this hair In the protection domain of bright patent.Those skilled in the art can do various to described specific embodiment The modification of various kinds or supplement are substituted using similar mode, without departing from structure of the invention or surmount present claims Scope defined in book, protection scope of the present invention all should be belonged to.

Claims (9)

1. a kind of tensile force type pipe joint, including fittings body, the both ends outer wall of the fittings body is provided with external screw thread, the fittings body It is provided at both ends with fittings body through hole, it is characterised in that:Also include nut, sealing ring and pulling sleeve;The fittings body through hole connection There is No.1 cylindrical hole, the aperture of the No.1 cylindrical hole is more than fittings body through hole;The middle hole wall of the fittings body through hole It is upper to form a circle projection;The fittings body is provided with turret head;The nut is provided with nut through hole, and the nut through hole includes Internal thread part, No. two cylindrical holes, the taper lock tieholen being sequentially connected;The internal thread part of the nut is provided with internal thread;Institute The aperture for stating No. two cylindrical holes is more than the aperture of internal thread part, and the maximum diameter of hole of the taper lock tieholen is less than No. two cylinders The aperture in hole, a circle boss is formed between the taper lock tieholen and No. two cylindrical holes;The aperture of the taper lock tieholen from Start to taper into No. two cylindrical connection ends and equal by the aperture in connecting leg road;The nut is provided with turret head; The sealing ring and pulling sleeve are sequentially distributed between one end of fittings body and nut, and sealing ring is arranged on No.1 cylindrical hole It is interior;The front end of the pulling sleeve is provided with a circle seam, and the rear end of the pulling sleeve sets fluted, the groove and fittings body Clamping fixes sealing ring in No.1 cylindrical hole;The fittings body and nut are connected through a screw thread, the seam of the pulling sleeve Positioned at nut and by between the tube wall in connecting leg road, seam contacts with the hole wall of taper lock tieholen, and in the hole wall of taper lock tieholen The compression that curved inwardly under effect is by connecting leg road so as to being fixed by connecting leg road.
2. tensile force type pipe joint according to claim 1, it is characterised in that:The nut is locking nut.
3. tensile force type pipe joint according to claim 1, it is characterised in that:The sealing ring is single sealing ring or double density Seal.
4. tensile force type pipe joint according to claim 1, it is characterised in that:The front end of the seam is acute angle shape.
5. tensile force type pipe joint according to claim 1, it is characterised in that:Described two buses in cone locking hole axle section Between angular range be 10 ° -30 ° between.
6. tensile force type pipe joint according to claim 1, it is characterised in that:The pore diameter range of the fittings body through hole is 6- 200mm;And/or the aperture of the fittings body through hole and the minimum-value aperture of taper lock tieholen it is equal.
7. tensile force type pipe joint according to claim 1, it is characterised in that:The external diameter by connecting leg road is 145- 225mm, wall thickness 1.5-2.5mm.
A kind of 8. connection method of tensile force type pipe joint, it is characterised in that:Use such as claim 1~8 any claim institute The tensile force type pipe joint stated, it is as follows the step of the connection method:It is 145-225mm, wall thickness 1.5- by the external diameter in connecting leg road 2.5mm, nut through hole, pulling sleeve, sealing ring and fittings body are passed through by connecting leg road, both sides are first placed at connector by connecting leg road Both ends, both without using welding, also connected without using flange, sealing ring and pulling sleeve fixed only by nut is turned; The displacement of the taper lock tieholen of nut, seam curve inwardly under the hole wall effect of taper lock tieholen and compressed by the outer of connecting leg road Wall, it is indeformable by the inwall in connecting leg road, so as to being fixed and being sealed by connecting leg road, prevent by the pull-off in connecting leg road.
A kind of 9. purposes of tensile force type pipe joint, it is characterised in that:Using as described in claim 1~8 any claim Tensile force type pipe joint, due to reaching 100 by the ratio between the external diameter in connecting leg road and wall thickness:1, when to being fixed and being sealed by connecting leg road During, it is under pressure by the wall in connecting leg road and is easily deformed, passes through the ingenious cooperation of nut and pulling sleeve, Jin Jintong Cross rotating nut, you can realize the function to being fixed and being sealed by the outer wall in connecting leg road, can ensure that by the inwall in connecting leg road It is indeformable, without welding with connect without using flange in the case of, it is possible to realization is connected to Large Diameter Pipeline and thin pipe wall The effect that pipeline is fixed and sealed, be advantageous to Large Diameter Pipeline connected with the pipeline of thin pipe wall it is more convenient and flexible.
CN201710708293.2A 2017-08-17 2017-08-17 A kind of tensile force type pipe joint and connection method and purposes Pending CN107489832A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108246982A (en) * 2017-12-21 2018-07-06 安徽中电气有限公司 A kind of preparation method of slim rich chromium cast iron pipe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2320873Y (en) * 1998-03-11 1999-05-26 江阴市三立特种钢制品有限公司 Pipe joint
CN2660277Y (en) * 2003-07-08 2004-12-01 周晓宇 Pipe connection with axial sliding bush
CN203011654U (en) * 2012-11-29 2013-06-19 重庆气体压缩机厂有限责任公司 Clamp used for pressure test of heat exchange tube
CN205639937U (en) * 2016-05-11 2016-10-12 嘉兴迈思特管件制造有限公司 High leakproofness joint Assembly
CN106015778A (en) * 2016-07-22 2016-10-12 陆子万 Pipe clamping connection device
CN207246606U (en) * 2017-08-17 2018-04-17 海盐管件制造有限公司 Tensile force type pipe fitting

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2320873Y (en) * 1998-03-11 1999-05-26 江阴市三立特种钢制品有限公司 Pipe joint
CN2660277Y (en) * 2003-07-08 2004-12-01 周晓宇 Pipe connection with axial sliding bush
CN203011654U (en) * 2012-11-29 2013-06-19 重庆气体压缩机厂有限责任公司 Clamp used for pressure test of heat exchange tube
CN205639937U (en) * 2016-05-11 2016-10-12 嘉兴迈思特管件制造有限公司 High leakproofness joint Assembly
CN106015778A (en) * 2016-07-22 2016-10-12 陆子万 Pipe clamping connection device
CN207246606U (en) * 2017-08-17 2018-04-17 海盐管件制造有限公司 Tensile force type pipe fitting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108246982A (en) * 2017-12-21 2018-07-06 安徽中电气有限公司 A kind of preparation method of slim rich chromium cast iron pipe

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Application publication date: 20171219