Antistatic Epoxy Primer Lined and 3LPE Coated Jet A-1 Fuel Line Pipe
- Applied Steel Service Pipe: API 5L/ISO 3183 Gr.B-X100, ASTM A53/A106 Gr.B, ASTM A333 Gr.1/3/6, ASTM A671/A672/A691
Antistatic Epoxy Primer Lined and 3LPE Coated Jet A-1 Fuel Line Pipe
In the aviation industry, the safe and efficient transport of Jet A-1 fuel is of paramount importance. The use of advanced pipeline coatings and linings plays a critical role in ensuring both the integrity and longevity of fuel transport systems. The combination of an antistatic epoxy primer lining with an external three-layer polyethylene (3LPE) coating offers a robust solution for Jet A-1 fuel line pipes. The internal antistatic epoxy primer provides excellent resistance to chemical corrosion and prevents the buildup of static electricity, a key safety feature in handling flammable fuels. Its smooth surface enhances flow efficiency, reducing energy consumption and wear. Externally, the 3LPE coating delivers superior protection against physical damage and environmental corrosion, ensuring durability under various operational conditions. Together, these coatings form a comprehensive protection system, enhancing pipeline performance and safety, and making them an ideal choice for the rigorous demands of Jet A-1 fuel transportation.
Specifications for External 3LPE Coating
| Standard | DIN30670 |
| Applied Steel Service Pipe | API 5L/ISO 3183 Gr.B-X100, ASTM A53/A106 Gr.B, ASTM A333 Gr.1/3/6, ASTM A671/A672/A691 |
| Processing ability | OD:38mm-1620mm; WT:2mm-30mm |
| Length | 6-18m |
| Surface Preparation | ISO 8501-1/SIS 055900/DIN 55928 Sa 2.5/NACE No.2/SPCC SP10 (Near White Metal Finish) |
| Coating Structure | First Layer: Epoxy Primer Layer; Second Layer: Adhesive Layer; Third Layer: High-density Polyethylene Layer |
| Packing | 1. Both ends of the pipe are beveled to 30°+5°/-0° according to ASME B16.25. 2. For large-diameter pipes (OD≥NPS 8″), each pipe is equipped with 3 anti-collision ropes (3 locations) and 2 slings, with plastic covers at the ends of the pipes, or reusable metal bevel protectors (with sealing cloth), loosely packed. 3. For small-diameter pipes (OD≤NPS 6″), each pipe is equipped with 3 anti-collision ropes (3 locations), plastic covers at the ends of the pipes, and 2 slings per bundle (the whole bundle can be wrapped in a woven bag according to the coating type or customer requirements) and tied with plastic strips (woven bags are placed underneath to protect the coating from scratches) |
| Technique | Coated on Seamless/ERW/HFW/LSAW/SSAW/JCOE/UOE/RBE Line Pipes |
| Service condition | Designed Working Temperature: -40℃ to +85℃; Alkaline or sour |
| Place of Origin | Made in China |
| MOQ | Depends on order quantity |
| Transportation | Railway, By Sea |
| Type of DIN30670 3LPE/3PE coating | ||
| Type | N | S |
| Design temperatures for sintered polyethylene coatings | from −20 °C up to +50 °C | from −40 °C up to +70 °C |
| Design temperatures for extruded polyethylene coatings | from −20 °C up to +60 °C | from −40 °C up to +80 °C |
| 3LPE Coating thickness | ||
| Nominal size DN | normal (n) | increased (v) |
| DN≤ 100 | 1,8 | 2,5 |
| 100< DN≤ 250 | 2,0 | 2,7 |
| 250 < DN< 500 | 2,2 | 2,9 |
| 500 ≤ DN <800 | 2,5 | 3,2 |
| DN ≥800 | 3,0 | 3,7 |
| DIN30670 3LPE/3PE Coating Performance | |||
| Property | Requirement | Testing as in | Notes |
| Degree of cure of epoxy resin | ΔTg according to the manufacturer’s specification | Annex B | |
| Cathodic disbondment (CD test) | 23 °C/28 d or 60 °C/2 d max. 7 mm | Annex C | Applies only to three-layer coatings |
| Peel strength | Type N: 100 N/cm (23 °C) 20 N/cm (50 °C) Type S: 150 N/cm (23 °C) 30 N/cm (70 °C) |
Annex D | For system testing single values shall be no more than 25 % lower than the required average value. |
| Continuity (holiday detection) | No discharges | Annex E | 25 kV test |
| Elongation at break (23 °C ± 2 °C) | min. 400 % | Annex F | |
| Impact resistance (23 °C ± 2 °C) | Type N: ≥ 5 J/mm Type S: ≥ 7 J/mm |
Annex H | 25 kV test No discharges |
| Low-temperature impact resistance | Type N: ≥ 5 J/mm (−20 °C ± 2 °C) Type S: ≥ 7 J/mm (−40 °C ± 2 °C) |
Annex H | 25 kV test No discharges |
| Indentation resistance | Type N: max. 0,2 mm (23 °C) max. 0,3 mm (50 °C) Type S: max. 0,2 mm (23 °C) max. 0,4 mm (70 °C) |
Annex I | |
| Specific electrical coating resistance (23 °C ± 2 °C) | ≥ 108Ωm² | Annex J | |
| UV resistance | ΔMFR ± 35 % | Annex K | |
| Thermal aging resistance | ΔMFR ± 35 % | Annex L | |
Specifications for Internal Antistatic Epoxy Primer Lining
| Standard | As per the customer’s requirement for Jet A-1 Fuel Pipeline |
| Applied Steel Service Pipe | API 5L/ISO 3183 Gr.B-X100, ASTM A53/A106 Gr.B, ASTM A333 Gr.1/3/6, ASTM A671/A672/A691 |
| Processing ability | OD: 38mm-1620mm; WT: 2mm-30mm |
| Length | 6-18m |
| Packing | Plain/Beveled Ends with Plastic caps, Bundled or Loosely Packed |
| Technique | Lining the internal surface of Seamless/ERW/HFW/LSAW/SSAW/JCOE/UOE/RBE Line Pipes |
| Application | Sa 2.5 (Near White Metal Finish) as per ISO 8501-1/NACE No.2/SPCC SP10 |
| Epoxy Primer Brands | Hempel’s 87 Series (Hempel 876CN)/Hempel 35760; AkzoNobel Interline 850/Interline 994; Sherwin-Williams Dura-Plate 235/ Euronavy ES301; Jotun Tankguard 412/Jotamastic 87 |
| Place of origin | Made in China |
| MOQ | Depends on order quantity |
| Transportation | Railway, By Sea |
| Layer Type | Dry film thickness(µm) |
| Type n (normal) | ≥ 200 |
| Type v (increasing) | ≥ 250 |
| Type s (special) | ≥ 300 |
| Note: The thickness of the anti-corrosion layer at the welded places shall not be less than 80% of the specified thickness of the anti-corrosion layer of the pipe body. | |
| The main performances of internal coating | ||
| Items | Performance index | Test method |
| Pinhole test | Pinhole dispersion shall be held to a minimum | Jet A-1 Fuel Pipeline Requirements |
| Dry film thickness | ≥80μm | |
| Cure test | No softening, wrinkling, or blistering | |
| Adhesion test | No loss of adhesion | |
| Bend test | No loss of adhesion, spalling, or crack | |
| Soaking test | No loss of adhesion, softening, wrinkling or blistering | |
| Stripping test | Flake off, present powder particles when rolled | |
Applications of Antistatic Epoxy Primer Lined and 3LPE Coated Jet A-1 Fuel Line Pipe
The combination of antistatic epoxy primer lining and three-layer polyethylene (3LPE) coating offers exceptional protection and performance, making it ideal for a wide range of applications in the aviation fuel transport sector. Key applications include:
- Airport Fuel Distribution Systems: These coated pipelines are essential for safely transporting Jet A-1 fuel from storage tanks to aircraft refueling stations. The antistatic properties reduce the risk of static discharge during high-speed fuel flow, enhancing operational safety.
- Fuel Storage Facilities: In bulk fuel storage terminals, pipelines with antistatic epoxy linings and 3LPE coatings are used to transfer Jet A-1 between storage tanks and loading/unloading points. The chemical resistance of the epoxy lining protects against corrosion from prolonged fuel exposure.
- Fuel Refineries: The processing and transportation of Jet A-1 within refineries require pipelines that can withstand harsh chemical environments. The 3LPE coating provides excellent external corrosion protection, while the internal epoxy lining ensures fuel purity and pipeline integrity.
- Marine Fueling Systems: For marine terminals that supply Jet A-1 to aviation fuel tankers, these coated pipes provide reliable fuel transfer over extended distances. The durability of the 3LPE coating offers resistance to saltwater corrosion and mechanical damage.
- Fuel Transfer in Harsh Environments: Pipelines that traverse challenging terrains or extreme climates, such as deserts or arctic regions, benefit from the robust protection offered by 3LPE coatings. The flexibility and adhesion of the coatings accommodate thermal expansion and ground movement.
- Aviation Fuel Farms: In aviation fuel farms, where Jet A-1 is stored and distributed to various points, these pipelines ensure efficient and safe fuel management. The smooth interior lining minimizes pressure loss and enhances flow rates, optimizing fuel handling operations.
- Industrial Applications: Beyond aviation, these coated pipes are used in other industries that require the safe transport of hydrocarbons and chemicals, benefiting from the same protective features that ensure longevity and reliability.
The integration of antistatic epoxy primer linings and 3LPE coatings addresses the critical needs of Jet A-1 fuel transport by providing a high level of safety, performance, and protection in diverse environments. These applications illustrate their versatility and essential role in modern fuel-handling infrastructure.
