This standard applies to the design, construction and acceptance of liquid epoxy coating inner anti-corrosion layer of steel pipelines with medium such as crude oil, natural gas and water and medium temperature not exceeding 100 degrees Celsius. SY/T 0457-2000 Technical Standard for Internal Anti-corrosion Layer of Liquid Epoxy Coating for Steel PipelinesSY/T0457-2000 Standard download decompression password: www.bzxz.net
This standard applies to the design, construction and acceptance of liquid epoxy coating inner anti-corrosion layer of steel pipelines with medium such as crude oil, natural gas and water and medium temperature not exceeding 100 degrees Celsius.

ICS 23.040.10;87.020
Registration No.: 8133--2001
Petroleum and Natural Gas Industry Standard of the People's Republic of China P
SY/T 0457--2000
Technical standard of liquid epoxyinternal coating for steel pipeline2000 - 12-12 Issued
State Administration of Petroleum and Chemical Industry
2001- 06 - 01 Implementation
Grade and structure of anticorrosion coating
Steel pipes and pipe fittings
4 Coating process
Coating preparation
Inner surface pretreatment
Pipe end pretreatment
Steel pipe coating
Pipe fitting coating
5 Quality inspection
Quality inspection during production
5.2 Delivery inspection
6 Repair of anticorrosion coating
Marking, storage and transportation
7.3 Transportation
On-site supplement
Safety,
Health and environmental protection.
Delivery information
Appendix A
Test method for solid content of solvent-free anticorrosive coatings. Explanation of terms
Appendix Technical standard for internal anticorrosion layer of liquid epoxy coatings for steel pipelines. Explanation of clauses
Standard of the People's Republic of China for the petroleum and natural gas industry Technical standard for internal anticorrosion layer of liquid epoxy coatings for steel pipelines
Iechnical stardard of liquid epoxyinternal ccatirig for steef pipelineSY/T 0457---2000
Editor: Daqing Petroleum Management High Construction Materials Company Anticorrosive Pipeline FactoryApproval Department: State Petroleum and Chemical Industry Bureau Petroleum Industry Press
State Petroleum and Chemical Industry Bureau Document
State Petrochemical Zhengfa (2000) No. 445
Notice on Approval of 52 Petroleum and Natural Gas Industry Standards including "Regulations on Inspection of Shallow Water Petroleum Facilities"China National Petroleum Corporation, China National Petroleum and Chemical Corporation, China National Offshore Oil Corporation, Oil and Gas Industry Standardization Technical Committee: The draft of 52 petroleum and natural gas industry standards including "Regulations on Inspection of Shallow Water Petroleum Facilities" submitted by China National Petroleum Corporation, China National Petroleum and Chemical Corporation, China National Offshore Oil Corporation, Oil and Gas Industry Standardization Technical Committee has been approved by us and is now released. The name and number of the standard are as follows:
Strength standard:
Standard number
1.SY 6300---2000
2.SY 6501 --2000
3.SY 6502--2000
4. SY 6503 : -2000
5.5Y 6504--2000
6.SY 6505
7.SY 6506 200
Standard Name
Inspection Regulations for Shallow Sea Oil Facilities
Safety Regulations for Radioactive and Explosive Articles in Shallow Sea Oil Operations
Safety Management Regulations for Escape and Lifesaving Equipment for Personnel in Shallow Sea Oil Operations
Specifications for the Use of Combustible Gas Detection Alarms
Safety Regulations for Sulfide Oxygen Protection in Shallow Sea Oil OperationsColoring Regulations for Shallow Sea Shishan Facilities
Safety Production Management Regulations for Dry Gas Transportation of Sour Gas Recommended Standard:
No. Standard Code
8. SY^r 5059--2000
9.SY/T 5103--2000
10.SY/I 5150--2000
I1.SY/T 5208---2000
12.SY/T 5216-2000
13.SY/T 5236-2000
14.SY/T 5274--2000
15.SY/1 5276--2000
16.SY/T 5287-2000
17.$ Y/I
18.SY/T 5641--2000
19.SY/T 5877---2000
Standard name
Combination of simple tube oil pump with pump barrel
(Replace SY/T5059--91)
Detector combined flexible cable
(Replace SY/I5103-91)
Graded cementing device
(Replace SY/T5150--94)
Main lifting equipment for oil repair and maintenance
(Replace SY 5208--91,
SY 5209-91
SY 5210---91)
Conventional coring tool
(Replace SY/T 5216--94
SY 5413-91)
Oil pumping hook
(Replace SY5236--91)
Resin coated sand
(Replace SY5274-91)
Determination of flexural strength, compressive strength and gas permeability of artificial core for chemical sand control
(Replace SY 5276--91)
Sand blending truck
(Replace SY 5287--91, SY 5441-92)Classification and code of materials for petroleum industry
(Replace SY 5497--92)
190 series natural gas engine for petroleum and natural gas industry (Replace SY5641-93)
Maintenance technical regulations for compensated density logging instrument
(Replace SY1 5877--93)
20.SY /1 6178-2000
21-SY/T 61842000
22.SYT 6479-2000
23.SY/T 64802000
24.SY/T 6481-2000
25.SY/I 64822000
6.SY71 6483--2000
27.SY/1 6484---2000
28.SY/T 64852000
29.SY7T 6486--2000
30.SY71 6487--2000
31:SYT 6488--2000
32.SY1 6489--2000
33.SY7I 6490---2000
34.SY/r 6491-2000
35.SY7F 6492--2000
36.SY/1 6493—20 00
37.SYr 64942000
38.SY/T 64972000
39.SY7T 64992000
40 .SY/T 6507---2000
41.SYT 0323-2000
Specification for processing and interpretation of logging data in water-flooded layers
(1 replaces SY/I6178---1996)
Table structure of oil and gas development database
(replaces SY/T 6184-1996)
24-bit high-precision telemetry seismograph
Seismic detector Part 2
Three-component geophone
High-pressure physical property analyzer for crude oil
Digital transmission cable tester
Data recording format for numerical control tester
Recommended practice for operation, maintenance and troubleshooting of gas lift tester
Design and specification of polymer oil recovery project Technical specification for clay swelling prevention and particle migration prevention in water injection acidification
Recommended practice for liquid carbon dioxide entrainment
Electroacoustic imaging test data processing Specification for interpretation of data from horizontal wells Specification for interpretation of data from horizontal wells
Specification for laboratory measurement of nuclear magnetic resonance parameters of rock samples Specification for perforation test and evaluation of oil swing casing simulation wells Technical specification for calibration device of sonic logging instrument Regulations for value transfer of nuclear logging instrument
Collection and exchange of reliability and maintenance data of equipment in the petroleum and natural gas industry
Directional coupling of oil drilling rigs
Testing of pressure devices
Specification for inspection, maintenance inspection, classification, repair and reconstruction of pressure vessels
Specification for construction and acceptance of glass fiber reinforced thermosetting resin pressure pipelines
42.SY/T 0408--2000
43.SY/T 0429---2000
44.SY/r 0457--2000
45.SY/T 0468--2000
46.SY/1 5271--2000
47.SY/T 5322--2000
48.SY7F 5374--2000www.bzxz.net
49.SY/T 5396--2000
50.SY/T 5437 --2000
51.SY/T 55472000
52.SY7T 6498-2000
Batch machine installation process construction and acceptance specification
(Replaces SY 4008--93)
Petroleum construction project quality inspection and assessment standard Oil and gas pipeline line L engineering
(1 replaces SY 4029-93)
Technical Standard for Internal Anticorrosion Layer of Liquid Epoxy Coating for Steel Pipelines
(Replaces SY/T 4057--93)||tt| |Taiwan Oil Construction Project Quality Inspection and Assessment Standards
Production of Anti-corrosion and Thermal Insulation Steel Pipes
(Replacement of SY/F 4068--93)
·Determination of Stuck Points and Explosive Loosening Methods|| tt||(Replace SY 5271--91)
Casing string strength design method
(Replace SY/ 5322—88)
Use of pre-cementing fluid for oil and gas wells
(Replaces SY/T 5374—91)
On-site inspection and transportation of oil casing
(Replaces SY 5396--91
SY 5577--93)
Basic technical requirements for core sealing fluid for drilling
(Replaces SY 5437-92)
Screw drill Use, maintenance and management
(replace SY 5547—92)
Electronic Multi-point Inclinometer Measurement Procedure
The above standards shall be implemented from June 1, 2001: State Petroleum and Chemical Industry Bureau
December 12, 2000 This standard was compiled by the Construction Materials Department of the Dahuiren Oil Administration Bureau in accordance with the requirements of the "1999 Document No. 1 of the China National Petroleum Corporation Quality and Safety Department". The Public Engineering Technology Research Institute and Daqing Blackbird Co., Ltd. participated in the compilation of the "Technical Specifications for Liquid Epoxy Coating Internal Anti-corrosion Coated Steel Pipes" SY/T405 7-93:
In the process of compiling this standard, the members of the compilation team followed the relevant national policies and guidelines, based on the application of liquid epoxy coating internal anti-corrosion layer technology for steel pipelines in various domestic oil fields. Based on the application of various new epoxy coatings and the development of coating construction technology, we have conducted extensive research on fragrance adjustment and carefully summarized the application of liquid epoxy coatings in design, prefabrication, construction and acceptance over the years. Based on the practical experience of the treatment, and referring to the relevant contents of "Technical Standard for Fusion Bonded Epoxy Powder Internal Coating of Steel Pipeline" SYI0442-97, The content of 4051-93 has been greatly revised to increase the technical performance indicators of epoxy glass flake coatings, add coating technology, production process quality inspection, anti-corrosion layer repair, on-site patching and pipe coating, etc. Many new contents were added to its original clauses, and a document was formed for soliciting opinions. The opinions of relevant units and experts were widely solicited in various ways, and the main contents of the standard were revised and revised. Finally, the standard was issued for the construction of petroleum engineering. The Standardization Committee will review and finalize the draft together with relevant departments.
The main contents of this standard include: general principles, grade and structure of anti-corrosion layer, materials, application engineering, quality inspection, anti-corrosion repair, labeling, storage and transportation, on-site repair, safety, health and environmental protection, delivery of materials, etc. This standard is entrusted by: Daqing Petroleum Administration Bureau Construction Materials Company Anti-corrosion Pipeline This standard is participated by: China National Petroleum Corporation Engineering Technology Research Institute, DAQING BLACKBIRD LIMITED.
The main drafters of this standard are Chen Shouping, Wang Xiuzhang, Liu Qingrui, Fan Jingwu, Zhu Shudong, Zhang Qibin and Han Wenli
This standard is interpreted by the Anti-corrosion Pipeline Factory of the Construction Materials Company of Daqing Petroleum Administration Bureau
1.0.1 To ensure The liquid epoxy coating of steel pipeline has the best anti-corrosion layer, which can reduce the secondary staining of the conveying medium and prolong the service life of the steel pipeline. This standard is formulated. 12 This standard is suitable for conveying medium as raw material, natural gas, water, national price version, temperature Filter no more than 10 steel pipe liquid epoxy coating internal anti-corrosion layer design, application! 1. The design and construction of steel pipelines with liquid epoxy coatings for weatherproofing shall comply with this standard, and shall also comply with the relevant national regulatory standards (models) in force. 2. The grade and structure of the anti-corrosion layer shall be determined by the design department according to the actual needs of the road project. When the anti-corrosion layer structure is used, there should be no less than two layers, and the thickness should comply with the requirements of Table 2.0.1. .0.1
Level and thickness of the internal anti-corrosion layer of the liquid ring without coating Anti-corrosion layer level
Ordinary level
Strong suppression level
Extra-strength level
Lower film Thickness (um)
Note: The thickness of the anti-corrosion layer at the weld shall be 80% of the specified thickness of the anti-corrosion layer of the sub-tube body. 22 If there are other requirements for liquid epoxy coating products, follow the product instructions Good regulations should be implemented, but the government should ensure the design thickness of the anti-corrosion layer. 3 Materials
3.1 Steel pipes and fittings
3.1.1 Steel pipes and fittings shall comply with the provisions of the current national standards for steel pipes and fittings. Except when required by the user, all steel pipes and fittings shall be inspected for appearance and dimensional deviation. Appearance and dimensional deviation shall comply with the relevant national standards or the requirements of the manufacturer. 3.1.2 Steel and copper parts shall be certified by the manufacturer and the inspection report shall be issued by the manufacturer. If you have any doubts about the order, Nanjin Oxygen will conduct targeted mechanical property inspection and chemical composition analysis. Analysis or damage inspection, only those that pass the inspection can be used. 3.2 Coatings || tt || 3, 2, 1 Epoxy coatings refer to two-component liquid coatings with epoxy resin as the main molding material, liquid cyclopentane resin anti-corrosion The performance indicators of coatings (excluding epoxy glass flake coatings) shall comply with the provisions of Table 3.2.11. The performance indicators of epoxy glass flake anti-corrosion coatings shall comply with Table 2-2. The chemical performance indicators of liquid epoxy coating anti-corrosion layers shall comply with Table 3.2.11. It should comply with the provisions of Table 3.2.1-3 and Table 3.2.1-1
Performance index of liquid epoxy resin anticorrosive coating
Viscosity (coating + viscometer
25r:21t)(-)
2m (gm)
Performance index
Organic solvent ionization and solvent ionization test method
(G13.11723-- 1993
1(1 :6100+5.100 43377 1724-- 1479 (1989)SY7T 6498-2000
Construction and acceptance specification for batch machine installation
(Replace SY 4008--93)
Petroleum construction project quality inspection and assessment standard Oil and gas pipeline line engineering
(Replace SY 4029--93)
Technical standard for internal anticorrosion layer of liquid epoxy coating for steel pipeline
(Replace SY/T 4057--93)
Taiwan oil construction project quality inspection and assessment standard
Manufacture of anticorrosion and heat-insulating steel pipe
(Replace SY/F 4068--93)
·Determination of card point and explosive loosening method
(Replace SY 5271--91)
Casing string strength design method
(Replace SY/ 5322-88)
Use of pre-fluid for cementing oil and gas wells
(Replaces SY/T 5374-91)
On-site inspection and transportation of oil casing
(Replaces SY 5396--91
SY 5577--93)
Basic technical requirements for sealing fluid for drilling coring
(Replaces SY 5437-92)
Use, maintenance and management of screw drilling tools
(Replaces SY 5547-92)
Electronic multi-point inclinometer measurement procedures
The above standards shall be implemented from June 1, 2001: State Bureau of Petroleum and Chemical Industry
December 12, 2000
This standard is based on the requirements of the "1999 Document No. 1 of the Quality and Safety Department of China National Petroleum Corporation, and is edited by the Construction Materials Department of the Daqing Oil Administration Bureau and the China National Petroleum Corporation Engineering Technology Research Institute and Daqing Blackbird Co., Ltd. to modify the "Technical Specifications for Liquid Epoxy Coating Internal Anti-corrosion Coated Steel Pipes" SY/T405 7-93: During the preparation of this standard, the members of the preparation team followed the relevant national policies and guidelines, based on the application of liquid epoxy coating internal anti-corrosion layer technology for steel pipelines in various domestic oil fields, combined with the emergence of various new types of epoxy coatings and the development of coating construction technology, conducted extensive research, carefully summarized the practical experience of liquid epoxy coating internal anti-corrosion layer in design, prefabrication, construction and acceptance over the years, and referred to the relevant contents of "Technical Standard for Fusion Bonded Epoxy Powder Internal Coating of Steel Pipeline" SYI0442-97, and made a revision of the standard. The content of 4051-93 has been greatly revised. The technical performance indicators of epoxy glass flake coatings have been added, and the coating process, production process quality inspection, anti-corrosion layer repair, on-site patching and pipe fittings coating have been added. Many new contents have also been added to the original clauses, and a document has been formed for soliciting opinions. The opinions of relevant units and experts have been widely solicited in various ways, and the main contents of the standard have been revised and revised. Finally, the Petroleum Engineering Construction Professional Standardization Committee will review and finalize it together with relevant departments.
The main contents of this standard are: general principles, the grade and structure of the anti-corrosion layer, materials, route design, quality inspection, anti-riot repair, marking, storage and transportation, on-site patching, safety, health and environmental protection, and handover materials. This standard is compiled by: Daqing Petroleum Administration Bureau Construction Materials Company Anti-corrosion Pipeline This standard is compiled by: China National Petroleum Corporation Engineering Technology Research Institute, Daqing Blackbird Co., Ltd.
The main drafters of this standard are Chen Shouping, Wang Xiuzhang, Liu Qingrui, Fan Jingwu, Zhu Shudong, Zhang Qibin and Han Wenli.
This standard is interpreted by the Anti-corrosion Pipeline Factory of Construction Materials Company of Daqing Petroleum Administration Bureau.
1.0.1 In order to ensure the highest quality of the inner anti-corrosion layer of liquid epoxy coatings for steel pipelines, reduce the secondary staining of the conveying medium and extend the service life of steel pipelines, this standard is formulated. 12 This standard is suitable for the design of the inner anti-corrosion layer of liquid epoxy coatings for steel pipelines with the conveying medium being natural gas and water, and the temperature filtration rate not exceeding 10. Acceptance
1 The design and construction of liquid epoxy coatings for steel pipelines shall comply with this standard and shall also comply with the current provisions of the relevant national regulatory standards (models)
2 Grade and structure of anti-corrosion layer
2.0.1 The grade and structure of the anti-corrosion layer of liquid epoxy coatings shall be determined by the design department according to the actual needs of the project. When there are no special provisions in the design, the anti-corrosion layer structure shall be no less than two layers, and the thickness shall comply with the provisions of Table 2.0.1. Table 2 .0.1
Level and thickness of the internal anti-corrosion layer of the liquid ring without coating Level of anti-corrosion layer
Ordinary level
Strong level
Extra-strength level
Lower film thickness (um)
Note: The thickness of the anti-corrosion layer at the weld shall be 80% of the specified thickness of the anti-corrosion layer of the tube body. 22 When there are other provisions for liquid epoxy coating products, they shall be implemented in accordance with the provisions in the product instructions, but the design thickness of the anti-corrosion layer shall not be guaranteed. 3 Materials
3.1 Steel pipes and fittings
3.1.1 Steel pipes and fittings shall comply with the provisions of the current national standards for steel pipes and fittings. Except when required by the user, all steel pipes and fittings shall be inspected for appearance and dimensional deviation. Their appearance and dimensional deviation shall comply with the provisions of relevant national standards or the requirements of the manufacturer.
3.1.2 Steel and fittings shall have the manufacturer's quality certificate and inspection report. If there is any doubt about the quality certificate and inspection report, the manufacturer shall conduct targeted mechanical property inspection and chemical composition analysis. Analysis or damage inspection, only those that pass the inspection can be used. 3.2 Coatings
3.2.1 Epoxy coatings refer to two-component liquid coatings with epoxy resin as the main molding material. The performance indicators of liquid epoxy resin anti-corrosion coatings (excluding epoxy glass flake coatings) shall comply with the provisions of Table 3.2.11, the performance indicators of epoxy glass flake anti-corrosion coatings shall comply with Table 2-2, and the chemical performance indicators of liquid epoxy coating anti-corrosion layers shall comply with the provisions of Table 3.2.1-3, Table 3.2.1-1
Performance index of liquid epoxy resin anticorrosive coating
Viscosity (coating + viscometer
25r:21t)(-)
2m (gm)
Performance index
Organic solvent optical flow
Test method
(G13.11723-- 1993
1(1 :6100+5. 100 43377 1724-- 1479 (1989)SY7T 6498-2000
Construction and acceptance specification for batch machine installation
(Replace SY 4008--93)
Petroleum construction project quality inspection and assessment standard Oil and gas pipeline line engineering
(Replace SY 4029--93)
Technical standard for internal anticorrosion layer of liquid epoxy coating for steel pipeline
(Replace SY/T 4057--93)
Taiwan oil construction project quality inspection and assessment standard
Manufacture of anticorrosion and heat-insulating steel pipe
(Replace SY/F 4068--93)
·Determination of card point and explosive loosening method
(Replace SY 5271--91)
Casing string strength design method
(Replace SY/ 5322-88)
Use of pre-fluid for cementing oil and gas wells
(Replaces SY/T 5374-91)
On-site inspection and transportation of oil casing
(Replaces SY 5396--91
SY 5577--93)
Basic technical requirements for sealing fluid for drilling coring
(Replaces SY 5437-92)
Use, maintenance and management of screw drilling tools
(Replaces SY 5547-92)
Electronic multi-point inclinometer measurement procedures
The above standards shall be implemented from June 1, 2001: State Bureau of Petroleum and Chemical Industry
December 12, 2000
This standard is based on the requirements of the "1999 Document No. 1 of the Quality and Safety Department of China National Petroleum Corporation, and is edited by the Construction Materials Department of the Daqing Oil Administration Bureau and the China National Petroleum Corporation Engineering Technology Research Institute and Daqing Blackbird Co., Ltd. to modify the "Technical Specifications for Liquid Epoxy Coating Internal Anti-corrosion Coated Steel Pipes" SY/T405 7-93: During the preparation of this standard, the members of the preparation team followed the relevant national policies and guidelines, based on the application of liquid epoxy coating internal anti-corrosion layer technology for steel pipelines in various domestic oil fields, combined with the emergence of various new types of epoxy coatings and the development of coating construction technology, conducted extensive research, carefully summarized the practical experience of liquid epoxy coating internal anti-corrosion layer in design, prefabrication, construction and acceptance over the years, and referred to the relevant contents of "Technical Standard for Fusion Bonded Epoxy Powder Internal Coating of Steel Pipeline" SYI0442-97, and made a revision of the standard. The content of 4051-93 has been greatly revised. The technical performance indicators of epoxy glass flake coatings have been added, and the coating process, production process quality inspection, anti-corrosion layer repair, on-site patching and pipe fittings coating have been added. Many new contents have also been added to the original clauses, and a document has been formed for soliciting opinions. The opinions of relevant units and experts have been widely solicited in various ways, and the main contents of the standard have been revised and revised. Finally, the Petroleum Engineering Construction Professional Standardization Committee will review and finalize it together with relevant departments.
The main contents of this standard are: general principles, the grade and structure of the anti-corrosion layer, materials, route design, quality inspection, anti-riot repair, marking, storage and transportation, on-site patching, safety, health and environmental protection, and handover materials. This standard is compiled by: Daqing Petroleum Administration Bureau Construction Materials Company Anti-corrosion Pipeline This standard is compiled by: China National Petroleum Corporation Engineering Technology Research Institute, Daqing Blackbird Co., Ltd.
The main drafters of this standard are Chen Shouping, Wang Xiuzhang, Liu Qingrui, Fan Jingwu, Zhu Shudong, Zhang Qibin and Han Wenli.
This standard is interpreted by the Anti-corrosion Pipeline Factory of Construction Materials Company of Daqing Petroleum Administration Bureau.
1.0.1 In order to ensure the highest quality of the inner anti-corrosion layer of liquid epoxy coatings for steel pipelines, reduce the secondary staining of the conveying medium and extend the service life of steel pipelines, this standard is formulated. 12 This standard is suitable for the design of the inner anti-corrosion layer of liquid epoxy coatings for steel pipelines with the conveying medium being natural gas and water, and the temperature filtration rate not exceeding 10. Acceptance
1 The design and construction of liquid epoxy coatings for steel pipelines shall comply with this standard and shall also comply with the current provisions of the relevant national regulatory standards (models)
2 Grade and structure of anti-corrosion layer
2.0.1 The grade and structure of the anti-corrosion layer of liquid epoxy coatings shall be determined by the design department according to the actual needs of the project. When there are no special provisions in the design, the anti-corrosion layer structure shall be no less than two layers, and the thickness shall comply with the provisions of Table 2.0.1. Table 2 .0.1
Level and thickness of the internal anti-corrosion layer of the liquid ring without coating Level of anti-corrosion layer
Ordinary level
Strong level
Extra-strength level
Lower film thickness (um)
Note: The thickness of the anti-corrosion layer at the weld shall be 80% of the specified thickness of the anti-corrosion layer of the tube body. 22 When there are other provisions for liquid epoxy coating products, they shall be implemented in accordance with the provisions in the product instructions, but the design thickness of the anti-corrosion layer shall not be guaranteed. 3 Materials
3.1 Steel pipes and fittings
3.1.1 Steel pipes and fittings shall comply with the provisions of the current national standards for steel pipes and fittings. Except when required by the user, all steel pipes and fittings shall be inspected for appearance and dimensional deviation. Their appearance and dimensional deviation shall comply with the provisions of relevant national standards or the requirements of the manufacturer.
3.1.2 Steel and fittings shall have the manufacturer's quality certificate and inspection report. If there is any doubt about the quality certificate and inspection report, the manufacturer shall conduct targeted mechanical property inspection and chemical composition analysis. Analysis or damage inspection, only those that pass the inspection can be used. 3.2 Coatings
3.2.1 Epoxy coatings refer to two-component liquid coatings with epoxy resin as the main molding material. The performance indicators of liquid epoxy resin anti-corrosion coatings (excluding epoxy glass flake coatings) shall comply with the provisions of Table 3.2.11, the performance indicators of epoxy glass flake anti-corrosion coatings shall comply with the provisions of Table 2-2, and the chemical performance indicators of liquid epoxy coating anti-corrosion layers shall comply with the provisions of Table 3.2.1-3, Table 3.2.1-1
Performance index of liquid epoxy resin anticorrosive coating
Viscosity (coating + viscometer
25r:21t)(-)
2m (gm)
Performance index
Organic solvent optical flow
Test method
(G13.11723-- 1993
1(1 :6100+5. 100 43377 1724-- 1479 (1989)1 This standard is formulated to ensure the best quality of the inner anti-corrosion layer of liquid epoxy coatings for steel pipelines, reduce the secondary staining of the conveying medium and extend the service life of the steel pipeline. 12 This standard is suitable for the design and application of the inner anti-corrosion layer of liquid epoxy coatings for steel pipelines with the conveying medium being natural gas and water with a temperature filtration rate of not more than 10%.
1 The design and application of liquid epoxy coatings for steel pipelines with positive corrosion risk shall comply with this standard, and shall not be in accordance with the current provisions of the relevant national regulatory standards (models).
2 The grade and structure of the anti-corrosion layer
2.0.1 The grade and structure of the anti-corrosion layer of liquid epoxy coatings shall be determined by the design department according to the actual needs of the project. When there are no special provisions in the design, the anti-corrosion layer structure shall be no less than two layers, and the thickness shall comply with the provisions of Table 2.0.1. Table 2 .0.1
Level and thickness of the internal anti-corrosion layer of the liquid ring without coating Level of anti-corrosion layer
Ordinary level
Strong level
Extra-strength level
Lower film thickness (um)
Note: The thickness of the anti-corrosion layer at the weld shall be 80% of the specified thickness of the anti-corrosion layer of the tube body. 22 When there are other provisions for liquid epoxy coating products, they shall be implemented in accordance with the provisions in the product instructions, but the design thickness of the anti-corrosion layer shall not be guaranteed. 3 Materials
3.1 Steel pipes and fittings
3.1.1 Steel pipes and fittings shall comply with the provisions of the current national standards for steel pipes and fittings. Except when required by the user, all steel pipes and fittings shall be inspected for appearance and dimensional deviation. Their appearance and dimensional deviation shall comply with the provisions of relevant national standards or the requirements of the manufacturer.
3.1.2 Steel and fittings shall have the manufacturer's quality certificate and inspection report. If there is any doubt about the quality certificate and inspection report, the manufacturer shall conduct targeted mechanical property inspection and chemical composition analysis. Analysis or damage inspection, only those that pass the inspection can be used. 3.2 Coatings
3.2.1 Epoxy coatings refer to two-component liquid coatings with epoxy resin as the main molding material. The performance indicators of liquid epoxy resin anti-corrosion coatings (excluding epoxy glass flake coatings) shall comply with the provisions of Table 3.2.11, the performance indicators of epoxy glass flake anti-corrosion coatings shall comply with the provisions of Table 2-2, and the chemical performance indicators of liquid epoxy coating anti-corrosion layers shall comply with the provisions of Table 3.2.1-3, Table 3.2.1-1
Performance index of liquid epoxy resin anticorrosive coating
Viscosity (coating + viscometer
25r:21t)(-)
2m (gm)
Performance index
Organic solvent optical flow
Test method
(G13.11723-- 1993
1(1 :6100+5. 100 43377 1724-- 1479 (1989)1 This standard is formulated to ensure the best quality of the inner anti-corrosion layer of liquid epoxy coatings for steel pipelines, reduce the secondary staining of the conveying medium and extend the service life of the steel pipeline. 12 This standard is suitable for the design and application of the inner anti-corrosion layer of liquid epoxy coatings for steel pipelines with the conveying medium being natural gas and water with a temperature filtration rate of not more than 10%.
1 The design and application of liquid epoxy coatings for steel pipelines with positive corrosion risk shall comply with this standard, and shall not be in accordance with the current provisions of the relevant national regulatory standards (models).
2 The grade and structure of the anti-corrosion layer
2.0.1 The grade and structure of the anti-corrosion layer of liquid epoxy coatings shall be determined by the design department according to the actual needs of the project. When there are no special provisions in the design, the anti-corrosion layer structure shall be no less than two layers, and the thickness shall comply with the provisions of Table 2.0.1. Table 2 .0.1
Level and thickness of the internal anti-corrosion layer of the liquid ring without coating Level of anti-corrosion layer
Ordinary level
Strong level
Extra-strength level
Lower film thickness (um)
Note: The thickness of the anti-corrosion layer at the weld shall be 80% of the specified thickness of the anti-corrosion layer of the tube body. 22 When there are other provisions for liquid epoxy coating products, they shall be implemented in accordance with the provisions in the product instructions, but the design thickness of the anti-corrosion layer shall not be guaranteed. 3 Materials
3.1 Steel pipes and fittings
3.1.1 Steel pipes and fittings shall comply with the provisions of the current national standards for steel pipes and fittings. Except when required by the user, all steel pipes and fittings shall be inspected for appearance and dimensional deviation. Their appearance and dimensional deviation shall comply with the provisions of relevant national standards or the requirements of the manufacturer.
3.1.2 Steel and fittings shall have the manufacturer's quality certificate and inspection report. If there is any doubt about the quality certificate and inspection report, the manufacturer shall conduct targeted mechanical property inspection and chemical composition analysis. Analysis or damage inspection, only those that pass the inspection can be used. 3.2 Coatings
3.2.1 Epoxy coatings refer to two-component liquid coatings with epoxy resin as the main molding material. The performance indicators of liquid epoxy resin anti-corrosion coatings (excluding epoxy glass flake coatings) shall comply with the provisions of Table 3.2.11, the performance indicators of epoxy glass flake anti-corrosion coatings shall comply with the provisions of Table 2-2, and the chemical performance indicators of liquid epoxy coating anti-corrosion layers shall comply with the provisions of Table 3.2.1-3, Table 3.2.1-1
Performance index of liquid epoxy resin anticorrosive coating
Viscosity (coating + viscometer
25r:21t)(-)
2m (gm)
Performance index
Organic solvent optical flow
Test method
(G13.11723-- 1993
1(1 :6100+5. 100 43377 1724-- 1479 (1989)
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