3LPE Coated Pipe
3LPE Coated Steel Pipe Means That The Coating Of The Steel Pipe Has Three Layers, Which Are Polyethylene Or Polypropylene Outer Surface, Adhesive, And Fbe Inner Coating.
Because We Need To Use Polyethylene Or Polypropylene To Wrap The Surface Of The Steel Pipe In The Last Step, 3lpe Coated Steel Pipe Can Only Be Applied To The Outer Surface Of The Steel Pipe.
It Has Excellent Performance In The Choice Of External Corrosion Protection For Steel Pipes.
Balingsteel Can Provide You With High-Quality 3lpe Coated Steel Pipes According To Your Project Requirements In Accordance With ISO 21809-3, DIN 30670, and NACE SP0394.
Recommended Products By Balingsteel
3LPE Coated Pipe Meaning
3LPE Coated Pipe Means That There Are Three Layers on the Surface of the Pipe:
- Layer 1 Comprises a Fusion Bonded Epoxy Powder and a Solvent-Free Liquid Epoxy Coating. It Is Applied to the Surface of the Steel Pipe After Sandblasting and Descaling (FBE>100um).
- Layer 2 Is an Adhesive, That Requires Specific Excellent Adhesive Properties and Serves to Connect the Bottom Layer ( FBE) with the Outer Protective Layer (PE), (AD: 170-250um).
- Layer 3 Is the Polyethylene Layer (PE), Which Has Excellent Wrapping and Protective Properties. (PE 1.8 to 3.7mm).
The 3LPE Coating Is Formed by Combining These Three Layers, And if the 3-Layer Material Is Replaced with Pp Material, The 3LPP Coating Will Be Formed. Balingsteel Has 25 Years of Experience in 3LPE&3LPP coating; Please Feel Free to Contact Us for More Information.
High Quality 3LPE Coated Pipe
Balingsteel Produces High-Quality 3LPE Steel Pipe for You, Our Products Have the Following Advantages:
- Fast Delivery Time-4 Production Lines to Produce at the Same Time.
- Strictest Execution Standards-Produce According to DIN 30670, CSA Z245.21, AS 4321, And so On.
- Long Service Life – Up to 100 Years of Service Life.
If You Are Still Looking for High-Quality 3LPE Steel Pipe, Please Contact Us Now!
Applications
3LPE Has Excellent Performance and Is Mainly Used in the Following Industries:
Oil and Gas Pipelines
3LPE & 3LPP Coatings Are Used for Long Distance Transportation of Natural Gas, Crude Oil and Refined Oil Products.
Drinking Water Pipeline
External Anti-Corrosion Using 3LPE Coating, Internal Anti-Corrosion Using FBE or Cement Mortar Coating.
Chemical Piping System
Alloy Pipe and Fittings with 3LPE Coating for Storage Tanks and Connecting Pipes.
Electricity Protection Pipeline
3LPE Coated Steel Pipe with Built-In Pipes, Wires, or Cables.
Data Sheet
- Suitable Size for 3LPE Coated Pipe
- Minimum Thickness of 3LPE Coated Pipe
- Application Conditions for 3LPE Coated Pipe
Suitable Size for 3LPE Coated Pipe
| Suitable Size for 3LPE Coated Pipe | Small diameter pipes: 1/2 inch to 12 inches (DN 15 to DN 300) |
| Medium diameter pipes: 12 inches to 24 inches (DN 300 to DN 600) | |
| Large diameter pipes: 24 inches to 48 inches (DN 600 to DN 1200) | |
| Very large diameter pipes: Over 48 inches (DN 1200+) | |
| Suitable Size for 3LPE Coated Pipe | API 5L (Grade B, X42, X46, X52, X56, X60, X65, X70, X80) |
| ASTM A53 (Grades A, B),ASTM A106 (Grades A, B, C),ASTM A252 (Grades 1, 2, 3) | |
| ASTM A335 (Grades P1, P5, P9, P11, P22, P91),ASTM A387 (Grades 11, 22, 5, 9) | |
| UNS S30400,UNS S31600,UNS S41000 | |
| Suitable Size for 3LPE Coated Pipe | SMLS-Seamless Steel Pipe |
| ERW-Welded Steel Pipe | |
| LASW&SAWL-Longitudinal Submerged Arc-Welding Pipe | |
| SSAW-Submerged Arc Welded Pipe |
Minimum Thickness of 3LPE Coated Pipe
| DIN 30670-THICKNESS OF 3LPE COATING | ||||
| DN (mm) | Epoxy Powder (μm) |
Adhesive Layer (μm) |
Min. Thickness on The Coating (mm) | |
| Common Level (G) | Strengthen Level (S) | |||
| DN ≤ 100 | ≥120 | ≥170 | 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 | ||
| ISO 21809-1-THICKNESS OF 3LPE COATING | |||||||||
| M kg/m |
Coating thickness mm |
||||||||
| Class A1 |
Class A2 |
Class A3 |
Class B1 |
Class B2 |
Class B3 |
Class C1 |
Class C2 |
Class C3 |
|
| M ≤ 15 | 1,8 | 2,1 | 2,6 | 1,3 | 1,8 | 2,3 | 1,3 | 1,7 | 2,1 |
| 15 < M ≤ 50 | 2,0 | 2,4 | 3,0 | 1,5 | 2,1 | 2,7 | 1,5 | 1,9 | 2,4 |
| 50 < M ≤ 130 | 2,4 | 2,8 | 3,5 | 1,8 | 2,5 | 3,1 | 1,8 | 2,3 | 2,8 |
| 130 < M ≤ 300 | 2,6 | 3,2 | 3,9 | 2,2 | 2,8 | 3,5 | 2,2 | 2,5 | 3,2 |
| 300 < M | 3,2 | 3,8 | 4,7 | 2,5 | 3,3 | 4,2 | 2,5 | 3,0 | 3,8 |
Application Conditions for 3LPE Coated Pipe |
|
| Environmental Requirements: | Suitable for corrosive soils. |
| Temperature Requirements: | Working temperatures -20°C to 60°C (-4°F to 140°F), other temperatures require the commissioning of the outer layer of corrosion protection. |
| Construction Requirements: | construction and transportation should pay attention to external damage to the anti-corrosion surface. |
The Main Difference Between Them Is the Outer Coating Material;
- 3LPE Outer Coating Material Is Polyethylene (PE)
- 3LPP Outer Coating Material for Polypropylene (PP)
Usually, the Coating Price of 3LPE Is Calculated According to the Square Meter, The Reference Price Given to You by Balingsteel Is 3.31 USD/Square Meter.
Please Let Us Know Your Detailed Specifications for Your Accurate Quotation.
Three-Layer Polyethylene Coating (3LPE):
- Fusion Bonded Epoxy Powder
- Adhesive
- Polyethylene Layer (PE)
3LPE Coating Process
-
Preheat:
Pre-Heating Treatment Heats the Steel Pipe to 55~85℃ to Remove the Impurities on the Surface of the Steel Pipe.
-
Blast Clean:
Remove Surface Impurities and Oil Contamination.
-
Grind Surface Defects:
Carry out Detailed Appearance Inspection to Ensure That the Steel Pipe Has No Serious Mechanical Damage, Heavy Skin, Cracks and Other Defects.
-
Final Surface Treatment:
Use Shot Blasting Equipment to Further Treat the Outer Surface of the Steel Pipe to Reach Sa2.5 Grade.
-
Induction Heat:
Pre-Heating Treatment Is Carried out to Heat the Steel Pipe to Between 185~235°c to Ensure Good Adhesion Between the Coating and the Surface of the Steel Pipe.
-
FBE Application:
Spraying of Epoxy Powder. The Epoxy Powder Is Evenly Covered on the Surface of the Steel Pipe by Electrostatic Spraying to Form a Tough Anti-Corrosion Layer.
-
Extruded or Spray Applied Copolymer:
During the Gelling Process of the Epoxy Powder Layer, An Adhesive Is Applied to Prepare for the Next Step of Winding the Polyethylene Tape.
-
Extruded Polyethylene:
The Polyethylene Tape Is Wound to Form a Continuous Anti-Corrosion Layer.
-
Quench:
After the Anticorrosion Layer Is Applied, The Pipe Is Cooled with Circulating Water to Ensure That the Anticorrosion Layer Is Fully Cured and Has Stable Properties.
-
Electrical Inspection:
The Edm Test Is Carried out to Check the Quality, Including Thickness, Adhesion, and Other Tests.
-
Stockpile:
The Completed Anti-Corrosion Treated Steel Pipe Is Properly Packaged to Prevent Damage During Transportation and Stored in an Appropriate Environment.
