CN201954125U - Steel-based three-layer composite steel pipe - Google Patents

Steel-based three-layer composite steel pipe Download PDF

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Publication number
CN201954125U
CN201954125U CN2011201835378U CN201120183537U CN201954125U CN 201954125 U CN201954125 U CN 201954125U CN 2011201835378 U CN2011201835378 U CN 2011201835378U CN 201120183537 U CN201120183537 U CN 201120183537U CN 201954125 U CN201954125 U CN 201954125U
Authority
CN
China
Prior art keywords
welding
steel
layer
arc welding
resin layer
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 - Fee Related
Application number
CN2011201835378U
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Chinese (zh)
Inventor
韦再生
梁启山
李友胜
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.)
SHANGHAI YUEYUECHAO STEEL TUBE CO Ltd
Original Assignee
SHANGHAI YUEYUECHAO STEEL TUBE 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 SHANGHAI YUEYUECHAO STEEL TUBE CO Ltd filed Critical SHANGHAI YUEYUECHAO STEEL TUBE CO Ltd
Priority to CN2011201835378U priority Critical patent/CN201954125U/en
Application granted granted Critical
Publication of CN201954125U publication Critical patent/CN201954125U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a steel-based three-layer composite steel pipe, which includes a base layer made of steel Q345B having a low alloy structure, an inner acid-resisting rustproof layer made of austenitic stainless steel 00Cr19Ni10 and arranged on the inner surface of the base layer, and an outer acid-resisting rustproof layer made of austenitic stainless steel 1Cr18Ni9Ti and arranged on the outer surface of the base layer; the joints of the base layer, the inner acid-resisting rustproof layer and the outer acid-resisting rustproof layer are connected through welding; and a first joint of the base layer utilizes submerged-arc welding used low alloy steel welding wire H08D and wire sintered flux SJ101G for welding, a second joint of the inner acid-resisting rustproof layer utilizes submerged-arc welding used stainless steel welding wire CHW-308L and submerged-arc welding used fused flux CHF 260 for welding, and a third joint of the outer acid-resisting rustproof layer utilizes submerged-arc welding used stainless steel welding wire ER 308 and submerged-arc welding used fused flux CHF 260 for welding. The steel-based three-layer composite steel pipe has the benefits that the joints are prevented from the phenomena of hardening crack and separation, and the safety service life of a pipeline can be prolonged.

Description

Three layers of composite steel tube of base steel
Technical field
The utility model relates to a kind of composite steel tube, relates in particular to the structure of this composite steel tube joint.
Background technique
Carry the acidic fluid medium to require very high to the acidproof alkali resistance of its inner and outer surface with steel pipe in the seabed.
Steel pipe mostly is by increasing the surface anticorrosion layer and improves its acidproof alkali resistance in the prior art.But in increasing the anticorrosive coat process, can there be joint applying condition of poor, phenomenons such as anticorrosive coat sclerosis cracking, disengaging may takes place, greatly the working life of the safety coefficient of the pipeline of Jiang Diing and shortening pipeline during pipeline is taken.
Summary of the invention
The utility model technical issues that need to address have provided three layers of composite steel tube of a kind of base steel, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: material be low-alloy structural steel Q345B basic unit, base layer interior surface, material be Austenitic Stainless Steel 00Cr19Ni10 interior acidproof resin layer and base layer exterior surface, material is the outer acidproof resin layer of Austenitic Stainless Steel 1Cr18Ni9Ti; The joint of described basic unit and inside and outside acidproof resin layer is by being welded to connect; Described first junction point that is welded as between the basic unit uses second junction point between low alloy steel welding wire used for submerged arc welding H08D and pipeline agglomerated flux SJ101G welding, the interior acidproof resin layer to use the 3rd junction point between used for submerged arc welding stainless steel welding stick CHW-308L and used for submerged arc welding fused flux CHF260 welding and the outer acidproof resin layer to use used for submerged arc welding stainless steel welding stick ER308 and used for submerged arc welding fused flux CHF260 welding.
Compared with prior art, the beneficial effects of the utility model are: make the joint can not produce the phenomenon of sclerosis cracking, disengaging, can improve the safe operating life of pipeline.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As seen from Figure 1: the utility model comprises: material be low-alloy structural steel Q345B basic unit 2, base layer interior surface, material be Austenitic Stainless Steel 00Cr19Ni10 interior acidproof resin layer 3 and base layer exterior surface, material is the outer acidproof resin layer 1 of Austenitic Stainless Steel 1Cr18Ni9Ti; The joint of described basic unit 2 and inside and outside acidproof resin layer is by being welded to connect; Described first junction point 5 that is welded as between the basic unit 2 uses second junction point 6 between low alloy steel welding wire used for submerged arc welding H08D and pipeline agglomerated flux SJ101G welding, the interior acidproof resin layer 3 to use the 3rd junction point 4 between used for submerged arc welding stainless steel welding stick CHW-308L and used for submerged arc welding fused flux CHF260 welding and the outer acidproof resin layer 1 to use used for submerged arc welding stainless steel welding stick ER308 and used for submerged arc welding fused flux CHF260 welding.
The thickness of described basic unit 2 is between 8~25mm, and the thickness of interior acidproof resin layer 3 is between 1.2~1.8mm, and the thickness of outer acidproof resin layer 1 is between 1.2~1.8mm.
The low-alloy structural steel Q345B that adopts in the utility model, Austenitic Stainless Steel 00Cr19Ni10, Austenitic Stainless Steel 1Cr18Ni9Ti, low alloy steel welding wire used for submerged arc welding H08D and pipeline agglomerated flux SJ101G, used for submerged arc welding stainless steel welding stick CHW-308L and used for submerged arc welding fused flux CHF260 and used for submerged arc welding stainless steel welding stick ER308 and used for submerged arc welding fused flux CHF260 can both find corresponding product on the technical manual in this field.
Three layers of composite steel tube of base steel of the present utility model be with base steel (be labeled as 2, material is Q345B) outer, (be labeled as 1, material is 1Cr18Ni9Ti to interior acidproof resin layer; Be labeled as 3, material is 00Cr19Ni10) the composite material steel plate is after milling limit, edges of boards pre-bending, O forming, and prewelding GMAW locatees joint close, and SAW is astute and able in carrying out again (is labeled as 4, use wlding ER308+CHF260) and outer SAW is astute and able (is labeled as 5, use wlding H08D+SJ101G; Be labeled as 6, use wlding CHW-308L+CHF260), the sizing that eliminates stress then, check etc. guarantees that welded joint and steel pipe apparent size reach customer requirements.
In manufacture process, need the basic unit to product, multiple layer, the stretching of transition layer weld seam, bending, impact property, hardness, multiple layer advances with the adhesive strength of basic unit and the acidproof alkali resistant antirust ability of multiple layer carries out verification experimental verification, to reach line pipe relevant criterion and client's technical requirements.
Steel pipe groundwork thickness 8~25mm of the present utility model, multiple layer thickness is generally 1.2~1.8mm, can be according to requirement for anticorrosion and User Agreement adjustment.Use the pipeline of this product, by same service life the Thickness Design than conventional line can reduce greatly, can reach more than 70 years working life.

Claims (2)

1. three layers of composite steel tube of a base steel is characterized in that comprising: material be low-alloy structural steel Q345B basic unit, base layer interior surface, material be Austenitic Stainless Steel 00Cr19Ni10 interior acidproof resin layer and base layer exterior surface, material is the outer acidproof resin layer of Austenitic Stainless Steel 1Cr18Ni9Ti; The joint of described basic unit and inside and outside acidproof resin layer is by being welded to connect; Described first junction point that is welded as between the basic unit uses second junction point between low alloy steel welding wire used for submerged arc welding H08D and pipeline agglomerated flux SJ101G welding, the interior acidproof resin layer to use the 3rd junction point between used for submerged arc welding stainless steel welding stick CHW-308L and used for submerged arc welding fused flux CHF260 welding and the outer acidproof resin layer to use used for submerged arc welding stainless steel welding stick ER308 and used for submerged arc welding fused flux CHF260 welding.
2. three layers of composite steel tube of base steel according to claim 1 is characterized in that: the thickness of described basic unit is between 8~25mm, and the thickness of interior acidproof resin layer is between 1.2~1.8mm, and the thickness of outer acidproof resin layer is between 1.2~1.8mm.
CN2011201835378U 2011-06-01 2011-06-01 Steel-based three-layer composite steel pipe Expired - Fee Related CN201954125U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011201835378U CN201954125U (en) 2011-06-01 2011-06-01 Steel-based three-layer composite steel pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011201835378U CN201954125U (en) 2011-06-01 2011-06-01 Steel-based three-layer composite steel pipe

Publications (1)

Publication Number Publication Date
CN201954125U true CN201954125U (en) 2011-08-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011201835378U Expired - Fee Related CN201954125U (en) 2011-06-01 2011-06-01 Steel-based three-layer composite steel pipe

Country Status (1)

Country Link
CN (1) CN201954125U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102889434A (en) * 2012-10-24 2013-01-23 浙江金洲管道工业有限公司 Stainless steel compound welding steel pipe and manufacturing method thereof
CN102962563A (en) * 2012-11-27 2013-03-13 浙江金洲管道工业有限公司 Welding process for thin-walled composite steel pipe for pressure container
CN110076526A (en) * 2019-05-10 2019-08-02 绿华投资有限公司 A kind of composite steel tube manufacture technique of three layers of stainless steel and carbon steel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102889434A (en) * 2012-10-24 2013-01-23 浙江金洲管道工业有限公司 Stainless steel compound welding steel pipe and manufacturing method thereof
CN102889434B (en) * 2012-10-24 2015-01-21 浙江金洲管道工业有限公司 Stainless steel compound welding steel pipe and manufacturing method thereof
CN102962563A (en) * 2012-11-27 2013-03-13 浙江金洲管道工业有限公司 Welding process for thin-walled composite steel pipe for pressure container
CN102962563B (en) * 2012-11-27 2015-03-25 浙江金洲管道工业有限公司 Welding process for thin-walled composite steel pipe for pressure container
CN110076526A (en) * 2019-05-10 2019-08-02 绿华投资有限公司 A kind of composite steel tube manufacture technique of three layers of stainless steel and carbon steel

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110831

Termination date: 20160601