CN201964048U - Steel-based double-layer composite steel pipe - Google Patents

Steel-based double-layer composite steel pipe Download PDF

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Publication number
CN201964048U
CN201964048U CN201120183540XU CN201120183540U CN201964048U CN 201964048 U CN201964048 U CN 201964048U CN 201120183540X U CN201120183540X U CN 201120183540XU CN 201120183540 U CN201120183540 U CN 201120183540U CN 201964048 U CN201964048 U CN 201964048U
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CN
China
Prior art keywords
welding
steel
arc welding
layer
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
CN201120183540XU
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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 CN201120183540XU priority Critical patent/CN201964048U/en
Application granted granted Critical
Publication of CN201964048U publication Critical patent/CN201964048U/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 double-layer composite steel pipe, which comprises a substrate made of carbon structural steel Q235B and an acid-resistant anti-rust layer which is made of austenite stainless steel 0Cr18Ni9Ti and is positioned on the inner surface of the substrate, wherein the joints of the substrate and the acid-resistant anti-rust layer are connected by welding; and the welding is that: the first joint between the substrate and the acid-resistant anti-rust layer is welded by using a stainless steel welding wire CHG-326, and the second joint between substrates is welded by using a carbon steel welding wire H08MnA for submerge-arc welding and a sintered flux SJ101 for submerge-arc welding, and the third joint between acid-resistant anti-rust layers is welded by using a stainless welding wire CHW-308 for submerge-arc welding and a sintered flux CHF601 for submerge-arc welding. The steel-based double-layer composite steel pipe has the advantages that: the phenomena of hardening, cracking and detachment at the joints are avoided, and the safe service life of a pipeline can be prolonged.

Description

Base steel two-layer compound steel pipe
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 very high to its internal surface acid resistance and antirust requirement with steel pipe.
Steel pipe mostly is by increasing the internal surface anticorrosive coat and improves its acid 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 a kind of base steel two-layer compound steel pipe, 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 structural carbon steel Q235B basic unit and base layer interior surface, material is the acidproof resin layer of Austenitic stainless steel 0Cr18Ni9Ti; The joint of described basic unit and acidproof resin layer is by being welded to connect; Described first junction point that is welded as between basic unit and the acidproof resin layer uses second junction point between stainless steel welding stick CHG-316 welding, the basic unit to use the 3rd junction point between used for submerged arc welding carbon steel welding wire H08MnA and used for submerged arc welding agglomerated flux SJ101 welding and the acidproof resin layer to use used for submerged arc welding stainless steel welding stick CHW-308 and used for submerged arc welding agglomerated flux CHF601 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: material be structural carbon steel Q235B basic unit 1 and base layer interior surface, material is the acidproof resin layer 2 of Austenitic stainless steel 0Cr18Ni9Ti; The joint of described basic unit 1 and acidproof resin layer 2 is by being welded to connect; Described first junction point 4 that is welded as between basic unit 1 and the acidproof resin layer 2 uses second junction point 3 between stainless steel welding stick CHG-316 welding, the basic unit 1 to use the 3rd junction point 5 between used for submerged arc welding carbon steel welding wire H08MnA and used for submerged arc welding agglomerated flux SJ101 welding and the acidproof resin layer 2 to use used for submerged arc welding stainless steel welding stick CHW-308 and used for submerged arc welding agglomerated flux CHF601 welding.
Described basic unit 1 thickness is between 6.4~20mm, and acidproof resin layer 2 thickness are between 1~2mm.
Structural carbon steel Q235B, Austenitic stainless steel 0Cr18Ni9Ti, stainless steel welding stick CHG-316, used for submerged arc welding carbon steel welding wire H08MnA and used for submerged arc welding agglomerated flux SJ101 that the utility model adopts and used for submerged arc welding stainless steel welding stick CHW-308 and used for submerged arc welding agglomerated flux CHF601 have corresponding product on the technical manual in this field.
Base steel two-layer compound steel pipe of the present utility model, be with the acidproof resin layer of base steel (1 layer of material is Q235B) (2 layers of material are 0Cr18Ni9Ti) composite material steel plate after milling limit, edges of boards pre-bending, O forming, prewelding GMAW location joint close (is labeled as 4, use welding wire CHG-316), SAW is astute and able in carrying out again (is labeled as 5, use wlding CHW-308+CHF601) and outer SAW is astute and able (is labeled as 3, use wlding H08MnA+SJ101), the sizing that eliminates stress then, check wait 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 relevant tube line standard and client's technical requirements.
Steel pipe groundwork thickness 6.4~20mm of the present utility model, multiple layer thickness is generally 1~2mm; 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 50 years working life.

Claims (2)

1. base steel two-layer compound steel pipe is characterized in that comprising: material be structural carbon steel Q235B basic unit and base layer interior surface, material is the acidproof resin layer of Austenitic stainless steel 0Cr18Ni9Ti; The joint of described basic unit and acidproof resin layer is by being welded to connect; Described first junction point that is welded as between basic unit and the acidproof resin layer uses second junction point between stainless steel welding stick CHG-316 welding, the basic unit to use the 3rd junction point between used for submerged arc welding carbon steel welding wire H08MnA and used for submerged arc welding agglomerated flux SJ101 welding and the acidproof resin layer to use used for submerged arc welding stainless steel welding stick CHW-308 and used for submerged arc welding agglomerated flux CHF601 welding.
2. base steel two-layer compound steel pipe according to claim 1 is characterized in that: described groundwork thickness is between 6.4~20mm, and acidproof resin layer thickness is between 1~2mm.
CN201120183540XU 2011-06-01 2011-06-01 Steel-based double-layer composite steel pipe Expired - Fee Related CN201964048U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201120183540XU CN201964048U (en) 2011-06-01 2011-06-01 Steel-based double-layer composite steel pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201120183540XU CN201964048U (en) 2011-06-01 2011-06-01 Steel-based double-layer composite steel pipe

Publications (1)

Publication Number Publication Date
CN201964048U true CN201964048U (en) 2011-09-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201120183540XU Expired - Fee Related CN201964048U (en) 2011-06-01 2011-06-01 Steel-based double-layer composite steel pipe

Country Status (1)

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CN (1) CN201964048U (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102615405A (en) * 2012-04-12 2012-08-01 太原重工股份有限公司 Welding method of stainless steel composite plates
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
CN103028631A (en) * 2012-11-27 2013-04-10 浙江金洲管道工业有限公司 Manufacture process of thin-wall spiral composite steel pipe
CN104801820A (en) * 2014-08-14 2015-07-29 江苏绿叶锅炉有限公司 TP347H tube and 1 Cr18Ni9Ti tube row welding technology
CN105059469A (en) * 2015-07-13 2015-11-18 苏州金业船用机械厂 High-toughness anti-rust steel plate for ship
CN108857122A (en) * 2018-07-19 2018-11-23 湖南三泰新材料股份有限公司 A kind of welding method of bimetallic composite reinforcing steel bar interface
CN108890076A (en) * 2018-07-24 2018-11-27 中国石油天然气集团有限公司 A kind of boxing method of corrosion resistant alloy inner liner compound pipe

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102615405A (en) * 2012-04-12 2012-08-01 太原重工股份有限公司 Welding method of stainless steel composite plates
CN102615405B (en) * 2012-04-12 2014-06-18 太原重工股份有限公司 Welding method of stainless steel composite plates
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
CN103028631A (en) * 2012-11-27 2013-04-10 浙江金洲管道工业有限公司 Manufacture process of thin-wall spiral composite steel pipe
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
CN104801820A (en) * 2014-08-14 2015-07-29 江苏绿叶锅炉有限公司 TP347H tube and 1 Cr18Ni9Ti tube row welding technology
CN105059469A (en) * 2015-07-13 2015-11-18 苏州金业船用机械厂 High-toughness anti-rust steel plate for ship
CN108857122A (en) * 2018-07-19 2018-11-23 湖南三泰新材料股份有限公司 A kind of welding method of bimetallic composite reinforcing steel bar interface
CN108890076A (en) * 2018-07-24 2018-11-27 中国石油天然气集团有限公司 A kind of boxing method of corrosion resistant alloy inner liner compound pipe

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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: 20110907

Termination date: 20160601