I. FBE Coated Steel Pipe Product Introduction
FBE-coated steel pipe is a pipe product in which epoxy powder is sprayed on the outer surface of the steel pipe and then melted and solidified at high temperature to form a dense anti-corrosion layer.
FBE-coated steel pipe offers corrosion resistance, high temperature resistance, impact resistance, and easy installation. It is widely used in oil and gas pipelines, urban water supply pipelines, chemical process pipelines, and station pipelines.
II. Structural classification of FBE-coated steel pipes
i. Single-layer FBE-coated steel pipes
Only one layer of epoxy powder is coated, with a thickness of generally 250–500 μm.
Applicable to medium and low pressure oil and gas pipelines, branch pipelines, and process pipelines with generally low environmental corrosion.
ii. Double-layer FBE-coated steel pipes
Adding a second layer of epoxy powder to the single-layer FBE, the thickness can reach 450–700 μm.
Improving corrosion resistance and high temperature resistance, suitable for high-temperature oil and gas, hot oil, and chemical media pipelines.
III. FBE coated steel pipe implementation standards
| No. | Standard Name | Standard Number | Applicable Scope | Main Content |
|---|---|---|---|---|
| 1 | Canadian Oil & Gas Pipeline Anticorrosion Standard | CSA Z245.20 | Oil and gas transmission pipelines | FBE coating material properties, coating thickness, adhesion, impact resistance, and cathodic disbondment test requirements |
| 2 | AWWA Steel Pipe Anticorrosion Standard | AWWA C213 | Drinking water and industrial water pipelines | Preparation, inspection, and performance requirements for FBE coatings on steel pipe surfaces |
| 3 | ISO Pipeline Anticorrosion Standard | ISO 21809-2 | External anticorrosion coating for steel pipes in oil and gas industry | Technical requirements and testing methods for single or double-layer factory-applied FBE coatings |
| 4 | German Industrial Standard | DIN 30671 | Buried and underwater anticorrosion pipelines | Requirements for FBE coating thickness, adhesion, and aging performance |
| 5 | Chinese Petroleum & Natural Gas Industry Standard | SY/T 0447-2014 | Buried steel pipeline anticorrosion coatings | Material, process, and inspection requirements for single and double-layer FBE coated steel pipes |
| 6 | NACE Standard for Cathodic Protection Systems | NACE RP0394 / SP0394 | FBE coatings used under cathodic protection systems | Guidelines for design and application of FBE coatings under cathodic protection conditions |
| 7 | ASTM Coating Performance Testing Standards | ASTM D4541 / D2794 / D4060 | FBE coating adhesion, impact, and wear resistance | Experimental methods and requirements for testing coating performance |
IV. FBE coated steel pipe application areas and selection reference
FBE coated steel pipes are widely used in oil and gas, chemical, water treatment and municipal engineering due to their strong adhesion, corrosion resistance, high temperature resistance and convenient construction. When selecting a pipe, please refer to the following application scenarios:
i. Oil and gas pipelines
Applicable Scenarios: Branch pipelines, station pipelines, process pipelines, water injection pipelines, and high-temperature, medium- and low-pressure transmission pipelines.
Selection Recommendation: FBE coating is preferred for short-distance pipelines, branch pipelines, or pipelines carrying high-temperature media. For long-distance mainline pipelines, it is recommended to combine 3PE or 3LPP anti-corrosion coating to enhance mechanical protection.
ii. Municipal and industrial water supply pipelines
Applicable Applications: Drinking water, industrial water, and sewage transportation.
Selection Recommendation: Single-layer FBE is suitable for general water supply pipelines and offers excellent chemical resistance. If the media contains corrosive components, consider using a double-layer FBE for added protection.
iii. Chemical and high-temperature process piping
Applicable Applications: Hot oil, steam, and chemical media pipelines.
Selection Recommendation: Use a double-layer FBE (2FBE) coating to improve high-temperature and corrosion resistance.
iv. Station and auxiliary facilities pipelines
Applicable Applications: Pump stations, tank farms, and pipelines within processing plants.
Selection Recommendation: FBE coatings offer easy application and low maintenance, making them suitable for localized repairs and long-term corrosion protection.
V. Frequently Asked Questions about Purchasing FBE Coated Steel Pipes (FAQ)
Q1: What pipeline applications are FBE-coated steel pipes suitable for?
A1: FBE-coated steel pipes are suitable for oil and gas pipeline branches, process pipelines, station pipelines, municipal water supply, and high-temperature chemical pipelines. They offer corrosion resistance, high temperature resistance, and chemical resistance.
Q2: What specifications and lengths are available for FBE-coated steel pipe?
A2: Outer diameters range from 21.3 mm to 1626 mm, with wall thicknesses from 2.5 mm to 40 mm. Standard lengths are 6 m or 12 m, and custom lengths are available based on project requirements.
Q3: What are the differences between single-layer FBE and double-layer FBE? How should I choose?
A3: Single-layer FBE is suitable for medium- and low-pressure environments and generally corrosive environments. Double-layer FBE (2FBE) offers better corrosion and high-temperature resistance and is suitable for pipelines that require high temperatures, chemical media, or long service life.
Q4: What are the standards for FBE-coated steel pipe?
A4: The main standards include CSA Z245.20, AWWA C213, ISO 21809-2, DIN 30671, SY/T 0447-2014, and NACE RP0394, which guarantee coating quality and corrosion resistance.
Q5: What precautions should be taken during storage and transportation of FBE-coated steel pipes?
A5: They should be protected from light, rain, and chemicals. They should be stacked flat and supported with wooden blocks. Soft slings should be used for loading and unloading, and protective covers should be installed on the ends to prevent scratches or peeling of the coating.
