SY/T 0442-1997 Technical standard for fusion-bonded epoxy powder coating of steel pipes
Some standard content:
Technical standard of internal coating of fusion bonded cpoxy for steel pipelineSY/T 044297
Editor: China National Petroleum Corporation Engineering Technology Research InstituteApproval Department: China National Petroleum Corporation Petroleum Industry Press
1998 Beijing
Structure of fusion-bonded epoxy powder internal coating
Fusion-bonded epoxy powder coating
Application process
Surface pretreatment of steel pipes
Application of internal coating
Quality inspection
Quality inspection of coating process
Factory inspection and type inspection of internally coated steel pipesRepair, recoating and repainting of internal coating
Marking, stacking and lifting
Sanitation, safety and environmental protection
Installation requirements of internally coated steel pipes
General provisionswww.bzxz.net
Packing of internal coating·
Delivery documents
Appendix A
Appendix Appendix B
Appendix C
Appendix D
Test method for impact strength of coating
Test method for adhesion of coating
Test method for bending resistance of coating·
Explanation of standard words and terms
Explanation of clauses in the technical standard for internal fusion-bonded epoxy powder coating of steel pipelines·
China National Petroleum Corporation document
[97] CNPC Technical Supervision No. 698
Notice on the approval and release of three standards and five oil and gas industry standards including "Technical Standard for External Fusion-bonded Epoxy Powder Coating of Steel Pipelines"
To all relevant units: The three standards and five oil and gas industry standards (draft) including "Technical Standard for External Fusion-bonded Epoxy Powder Coating of Steel Pipelines" have been reviewed and approved and are now approved as oil and gas industry standards for release.
The numbers and names of various industry standards are as follows: No.
SY/T 0315-97
SY/T 0316-97
SYT 031797
SY/T 040797
Technical Standard for External Coating of Fusion-bonded Epoxy Powder for Steel Pipe
Recommended Practice for On-site Inspection of New Line Pipe
Building Code for Saline Soil Areas
Specification for Surface Preparation of Steel Materials before Painting (Replacing SYI4007-86
SY /T 041997
SYT 0420-97
SY 042297
SY 7 T 0442--97
SY / T 0448-97
SY /T 0449-97
SY/T 045097
SY 0466-97
SY /T 05151997
SY/T 5020--1997
SY/T 52121997
Specification for the manufacture, installation and acceptance of water jacket heating furnaces for oil fields (replacing SYJ4019-
Technical standard for petroleum asphalt anticorrosion layer of buried steel pipelines (replacing SYJ4020-88.
SYJ 8-84)
Specification for the construction and acceptance of oil field gathering and transportation pipelines
(replacing SYJ4022-88,SYJ4009
86, SY 406193
Technical standard for internal coating of fused epoxy powder for steel pipelines (replacing SYJ4042-89)
Construction and acceptance specification for steel pressure vessels for oil and gas processing in oil fields (replacing SYJ4048
Construction and acceptance specification for steel atmospheric pressure vessels for oil and gas fields (replacing SYJ4049-91)
Seismic design specification for buried steel pipelines for oil (gas) transportation (replacing SYJ4050-91)
Construction and acceptance specification for natural gas gathering and transportation pipelines (replacing SY4066-93,
SY/T 4082-95)
Oil and gas separator specification (replacing SY7515
Tapered cylindrical thread for drilling pumps (replacing
SY 502080. SY 502I-80)
Beam pumping unit quality classification (replacing
SY 5212-87)
16SYT 5332 1997
SY 7T 5455-: 1997
SY7T 5595
SY /T 5599-1997
SY/T 56751997
SYT 5788.21997
SYT 61871997
SY /T 62851997
SY /T 62861997
SY T 6287----1997
SY/T 6288-1997
SY /T 6289--1997
SY /T 6290--1997
SY / T 6291--1997
SY 7 T 6292----1997
SY 7 T 6293-1997
SY T 6294--1997
Technical specification for onshore two-dimensional seismic exploration data processing (replaces SY5332-92)
Technical specification for onshore three-dimensional seismic exploration data acquisition (replaces SY5455-92)
Oilfield chains and sprockets (replaces SY /T 559593)
Specification for the compilation of geological maps for oil and gas exploration well completion (replaces SY559993))
Specification for the compilation of geological summary reports for oil and gas exploration well completion (replaces SY/T5675)
Specification for oil and gas exploration and gas logging (replaces SY/T 5788,293)
Use and scrap conditions of 190 series diesel engines for oil drilling rigs
Evaluation methods for oil and gas reservoirs
Detailed description methods for carbonate reservoirs
Determination methods for oil well production index
Selection methods for drill pipes and drill chains
Technical specifications for exploration by continuous electromagnetic profiling
Auxiliary data formats for onshore three-dimensional seismic exploration
Technical specifications for dynamic measurement of global satellite positioning system for petroleum geophysical exploration
Exploration and oil testing test data interpretation and quality
Exploration and oil testing work specifications
Field sampling specifications for oil and gas exploration well analysis samples
SYT 62951997
SY 7T 7507-1997
SYT 75081997
Reliability prediction method for oil drilling equipment
Determination of water content in natural gas, electrolytic
method (replacement of SY7507-87)
Determination of total sulfur in liquefied petroleum gas in oil and gas fields, oxidation microcoulometry (replacement of
SY 750887)
The above standards shall be implemented on June 1, 1998. China National Petroleum Corporation
December 28, 1997
This standard is a revision of the original "Technical Standard for Powder Coating of Steel Pipelines" edited by the Engineering and Technology Research Institute of China National Petroleum Corporation and co-edited by the No. 1 Oil Construction Company of Shengli Petroleum Administration Bureau in accordance with the requirements of Document No. 52 of (96) Zhongyoujilanzi. ·
During the preparation of this standard, the staff followed the relevant national policies and guidelines: according to the actual needs of promoting and applying epoxy powder internal coating technology for steel pipelines in various parts of the country and oil fields, a relatively extensive investigation and research was conducted, and the practical experience in the hot implementation of the original standard was carefully summarized. In the spirit of approaching international advanced standards, the "Recommended Practice for Primerless Fusion-bonded Epoxy Internal Coatings for Pipelines" APIRPSL7 Second Edition (1988) was used as the main basis, and reference was made to the "Standard for Fusion-bonded Epoxy Coatings for Internal and External Walls of Steel Water Pipelines" AWWAC213-91 in the United States and the "Fusion-bonded Epoxy External Coatings for High-quality Pipelines" CAN/CSA-Z245 in Canada.20-M92 and other related standards, and made a large-scale technical revision of the original standard content, and added some new clauses in the chapters of coating process, quality inspection, repair and recoating, installation requirements, etc. After the draft for comments was formed, the opinions of relevant units and experts were widely solicited in various forms, and the main contents of the standard were repeatedly revised. Finally, the Petroleum Engineering Construction Professional Standardization Committee and relevant departments reviewed and finalized this standard in accordance with the Ministry of Construction's "Engineering Construction Standard Preparation Regulations [96, compiled, divided into 10 chapters and 4 appendices, including general principles, internal coating structure, materials, coating process, quality inspection, repair and recoating, marking, stacking and lifting, hygiene, safety and environmental protection, installation requirements and delivery materials and appendices. Authorized by China National Petroleum Corporation, this standard is interpreted by the Engineering Technology Research Institute of China National Petroleum Corporation. Contact address: No. 40, Jintang Road, Tanggu District, Tianjin; Postal Code: 300451
Editor in Chief of this Standard Unit: China National Petroleum Corporation Engineering and Technology Research Institute. Participating units of this standard: Shengli Petroleum Administration Bureau Oil Construction No. 1 Company. The main drafters of this standard are Yu Tingbin, Zhang Qibin, and Huang Fu. August 1997
1.0.1 This standard is formulated to ensure the quality of steel pipeline fusion epoxy powder coating, reduce secondary pollution of the conveying medium, extend the service life of steel pipelines, and improve the economic benefits of steel pipeline transportation.
1.0.2 This standard is applicable to the design, construction and acceptance of anti-corrosion projects for steel pipelines that use fusion epoxy powder coating as the coating film-forming material: the working temperature is -30-100C, and the steel pipelines that transport various oil products, natural gas, and water supply and drainage. The fusion epoxy powder coating of water supply pipelines must comply with the provisions of the relevant current national health and safety standards. 1. 0.3 The design and construction of the fused epoxy powder inner coating of steel pipelines shall not only comply with the requirements of this standard, but also comply with the provisions of the relevant mandatory standards (specifications) currently in force in the country.
2 Uncoated structure of fused epoxy powder
The fused epoxy powder inner coating of steel pipelines shall be a single-layer one-time film-forming anti-corrosion structure 2.0.2 The thickness of the fused epoxy powder inner coating of steel pipelines shall comply with the design regulations of the pipeline project. When there are no regulations in the design, it can be selected according to the requirements of the use of the pipeline in accordance with the provisions of Table 2.0.2.
Table 2.0.2 Thickness regulations of fused epoxy powder inner coating of steel pipelines Use requirements of pipelines
Drag reduction pipelines
Anti-corrosion pipelines
Ordinary grade
Reinforced grade
Inner coating thickness (1)
3 Materials
3.1 Steel pipe
3.1.1 Hot-rolled or cold-drawn seamless steel pipes of high-quality carbon structural steel and low-alloy structural steel coated with fusion-bonded epoxy powder inner coating shall comply with the provisions of GB/T8163 "Seamless Steel Pipes for Conveying Fluids".
3.1.2 The coating manufacturer shall inspect the appearance and dimensional deviation of the inner and outer walls of each steel pipe, and the appearance and dimensional deviation shall comply with the provisions of GB/T8163. 3.2 Fusion-bonded epoxy powder coating
3.2.1 The manufacturer of fusion-bonded epoxy powder coating shall provide relevant technical information such as product manual, factory certificate and quality certificate. 3.2.2 The fusion-bonded epoxy powder coating provided by the manufacturer shall be well packaged and marked with the product model, production date, batch number and validity period. The coating manufacturer shall use the fused epoxy powder coating recommended by the manufacturer. 3.2.3 The quality indicators of fused epoxy powder coating for internal coating of steel pipelines shall comply with the requirements of Table 3.2.3.
Density (g, cm\)
Particle size distribution (%)
Non-volatile matter content (%)
Amination time (s)
Quality index of fusion bonded epoxy powder coating
Quality index
Uniform color, no agglomeration
≥150mm not more than 3.0
>250um not more than 0.2
≤ 180(180℃)
≤ 120(200℃)
s 60230℃)
Test method
CB/I44721984
GE/ 1 65541986
GB/T65541986
GB/T 6554—1986
Horizontal fluidity (mm)
Magnetic content (%)
Note: The standards cited in the table are as follows:
Quality indicators
22- 28
Continued Table 3.2.3
Test methods
GB/ T 6554—1986
GB T 2482—1986
GB/T4472—1984 Determination of density and relative density of chemical products: GB/T6554—1986 Test method for electrical insulation sensitive powder CB/T 2482-1986 Determination method of magnetic content of abrasives. The laboratory specimens without coating of fused epoxy powder shall meet the following requirements: 3.2.4
1 The specimens are made of low-carbon steel plates, and their quantity and dimensions shall meet the requirements of the cabinet item inspection method, and each item shall not be less than 2 pieces. 2 The surface of the specimen shall be sandblasted, and the rust removal level shall reach the Sa2- level specified in "Surface Rust Level and Rust Removal Level of Steel Materials Before Coating" GB/T8923-1988. The surface anchor depth shall be adapted to the coating thickness: the minimum shall not be less than 2
3 The laboratory coated specimens shall be coated according to the coating process recommended by the manufacturer of fused epoxy powder coatings, and the coating thickness shall comply with the anti-corrosion design of pipeline engineering or the provisions of Table 2.0.2 of this standard.
4 The quality indicators of fused epoxy powder coating shall comply with the provisions of Table 3.2.4. Quality indicators of uncoated fusion-bonded epoxy powder
Impact strength (J)
Abrasion resistance (1000g, 1000 rpm)
Quality indicators
Surface flatness, uniform color and brightness, no bubbles, cracks, shrinkage holes, slight skin-like patterns are allowed
Test method
Appendix A
GB/T 176819791. The manufacturer of fused epoxy powder coatings shall provide relevant technical information such as product manual, factory certificate and quality certificate. 3.2.2 The fused epoxy powder coatings provided by the manufacturer shall be packed in good condition and marked with product model, production date, batch number and validity period. The coating manufacturer shall stock the fused epoxy powder coatings recommended by the manufacturer. 3.2.3 The quality index of fused epoxy powder coatings for internal coating of steel pipelines shall comply with the provisions of Table 3.2.3.
Density (g, cm\)
Particle size distribution (%)
Non-volatile matter content (%)
Amination time (s)
Quality index of fusion bonded epoxy powder coating
Quality index
Uniform color, no agglomeration
≥150mm not more than 3.0
>250um not more than 0.2
≤ 180(180℃)
≤ 120(200℃)
s 60230℃)
Test method
CB/I44721984
GE/ 1 65541986
GB/T65541986
GB/T 6554—1986
Horizontal fluidity (mm)
Magnetic content (%)
Note: The standards cited in the table are as follows:
Quality indicators
22- 28
Continued Table 3.2.3
Test methods
GB/ T 6554—1986
GB T 2482—1986
GB/T4472—1984 Determination of density and relative density of chemical products: GB/T6554—1986 Test method for electrical insulation sensitive powder CB/T 2482-1986 Determination method of magnetic content of abrasives. The laboratory specimens without coating of fused epoxy powder shall meet the following requirements: 3.2.4
1 The specimens are made of low-carbon steel plates, and their quantity and dimensions shall meet the requirements of the cabinet item inspection method, and each item shall not be less than 2 pieces. 2 The surface of the specimen shall be sandblasted, and the rust removal level shall reach the Sa2- level specified in "Surface Rust Level and Rust Removal Level of Steel Materials Before Coating" GB/T8923-1988. The surface anchor depth shall be adapted to the coating thickness: the minimum shall not be less than 2
3 The laboratory coated specimens shall be coated according to the coating process recommended by the manufacturer of fused epoxy powder coatings, and the coating thickness shall comply with the anti-corrosion design of pipeline engineering or the provisions of Table 2.0.2 of this standard.
4 The quality indicators of fused epoxy powder coating shall comply with the provisions of Table 3.2.4. Quality indicators of uncoated fusion-bonded epoxy powder
Impact strength (J)
Abrasion resistance (1000g, 1000 rpm)
Quality indicators
Surface flatness, uniform color and brightness, no bubbles, cracks, shrinkage holes, slight skin-like patterns are allowed
Test method
Appendix A
GB/T 176819791. The manufacturer of fused epoxy powder coatings shall provide relevant technical information such as product manual, factory certificate and quality certificate. 3.2.2 The fused epoxy powder coatings provided by the manufacturer shall be packed in good condition and marked with product model, production date, batch number and validity period. The coating manufacturer shall stock the fused epoxy powder coatings recommended by the manufacturer. 3.2.3 The quality index of fused epoxy powder coatings for internal coating of steel pipelines shall comply with the provisions of Table 3.2.3.
Density (g, cm\)
Particle size distribution (%)
Non-volatile matter content (%)
Amination time (s)
Quality index of fusion bonded epoxy powder coating
Quality index
Uniform color, no agglomeration
≥150mm not more than 3.0
>250um not more than 0.2
≤ 180(180℃)
≤ 120(200℃)
s 60230℃)
Test method
CB/I44721984
GE/ 1 65541986
GB/T65541986
GB/T 6554—1986
Horizontal fluidity (mm)
Magnetic content (%)
Note: The standards cited in the table are as follows:
Quality indicators
22- 28
Continued Table 3.2.3
Test methods
GB/ T 6554—1986
GB T 2482—1986
GB/T4472—1984 Determination of density and relative density of chemical products: GB/T6554—1986 Test method for electrical insulation sensitive powder CB/T 2482-1986 Determination method of magnetic content of abrasives. The laboratory specimens without coating of fused epoxy powder shall meet the following requirements: 3.2.4
1 The specimens are made of low-carbon steel plates, and their quantity and dimensions shall meet the requirements of the cabinet item inspection method, and each item shall not be less than 2 pieces. 2 The surface of the specimen shall be sandblasted, and the rust removal level shall reach the Sa2- level specified in "Surface Rust Level and Rust Removal Level of Steel Materials Before Coating" GB/T8923-1988. The surface anchor depth shall be adapted to the coating thickness: the minimum shall not be less than 2
3 The laboratory coated specimens shall be coated according to the coating process recommended by the manufacturer of fused epoxy powder coatings, and the coating thickness shall comply with the anti-corrosion design of pipeline engineering or the provisions of Table 2.0.2 of this standard.
4 The quality indicators of fused epoxy powder coating shall comply with the provisions of Table 3.2.4. Quality indicators of uncoated fusion-bonded epoxy powder
Impact strength (J)
Abrasion resistance (1000g, 1000 rpm)
Quality indicators
Surface flatness, uniform color and brightness, no bubbles, cracks, shrinkage holes, slight skin-like patterns are allowed
Test method
Appendix A
GB/T 17681979
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