1.0.1 This standard is formulated with a view to ensuring the quality of liquid epoxy internal coating for steel pipelines, to extending the service life of pipeline and raising the economic benefit.
1.0.2 This standard is applicable to the design, construction and acceptance of liquid epoxy internal coating for steel pipelines conveying crude oil, natural gas and water with medium temperature not higher than 80℃. Internal coating for steel pipelines conveying refined oil may also refer to this standard. This standard specifies the minimum requirements for materials, structures, coating application, quality inspection, repair, recoating, health, safety and environment protection as well as completion documents etc. of liquid epoxy internal coating for steel pipelines.
1.0.3 The design, coating application, construction and acceptance of liquid epoxy internal coating of steel pipelines shall not only meet the requirements of this standard , but also the current relevant national mandatory standards.
1 General
2 Thickness of Internal Coating
3 Materials
3.1 Pipes and Fittings
3.2 Coating
4 Coating Application
4.1 General
4.2 Surface Treatment
4.3 End Finish
4.4 Coating Application
5 Inspection and Testing
5.1 General
5.2 In-line Inspection and Measurement
5.3 Inspection of Finished Products
6 Repair and Recoating
6.1 Repair
6.2 Recoating
6.3 Inspection
7 Marking, Storage and Transportation
7.1 Marking
7.2 Storage
7.3 Transportation
8 Field Joint Coating
9 Health, Safety and Environment Protection
10 Completion Documents
Appendix A Test Methods of Solid Content of Solvent-free Anti-corrosion Coating
Appendix B Test Method for Adhesion Measurement of Internal Anti-corrosion Coating
Explanation of Wording
Normative Standard
