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3-Layer Polyethylene is a multilayer coating that is as commercially recognized by its shortened name - 3LPE. As the name suggests, this coating constitutes of three functional components. First - A high performance FBE primer or Fusion Bonded Epoxy primer. Second is a copolymer adhesive and the final constituent is an outer layer of polyethylene. This final outermost layer of the finish is what provides the 3LPE Coated EFW Pipe with a tougher and more durable form of protection.


3LPE Coated Seamless Pipe

 

The use of 3LPE on piping systems contributes to excellent protection for not only smaller diameter systems but also large diameter pipelines. The use of a 3LPE Coated Seamless Pipe is well functional in applications with moderately high temperatures. A benefit of using this coating on pipes is that the systems have a longer, and a more efficient service life. The main reason for this is the adhesive behaviour of the FBE component. Along with provides excellent adhesion to a 3LPE Coated Carbon Steel Pipe,  the component also provides excellent long-term corrosion resistance and stability, even if the pipelines are operational at moderate temperatures. The tough outer polyethylene layer present on the 3LPE Coated Seamless Tube is what preserves them during transportation and installation. Thus, the application of this coating reduces costly repairs while affording added in-ground protection against several external stressors such as chemicals, shear forces, and abrasive soil conditions. An increase in the thickness of the outer polyethylene layer, the 3LPE can provide a high level of mechanical protection to the 3LPE Coated Welded Pipe across diverse perverse circumstances without necessitating the use of expensive backfill.


Check Three layer polyethylene Coated EFW Pipe weight and dimensions



3LPE Coated Seamless Pipe specification list

  • Diameter range 25 mm to 3000 mm
  • Pipe length 6 m to 12 m
  • Operating temperature range -40o C to 80o C
  • Coating thickness Maximum up to 4.2 mm

Standards of 3LPE Coated EFW Pipe

  • DIN 30670
  • CSA Z245.21
  • ISO 21809-1

Most Common types of 3LPE Coated Welded Tube

3LPE Coated Carbon Steel Pipe and Tube means consist of 3 layers for pipeline coating

3PE coating / 3LPE Coated Steel Pipe/Tube
3PE coating / 3LPE Coated Steel Pipe/Tube
3LPE coating steel pipe
3LPE coating steel pipe
API 5L LINE PIPE WITH 3LPE for oil and gas
API 5L LINE PIPE WITH 3LPE for oil and gas
12 inches SCH 40 seamless carbon steel 3lpe coated line pipes
12 inches SCH 40 seamless carbon steel 3lpe coated line pipes
3LPE anti-corrosion steel pipe
3LPE anti-corrosion steel pipe
3LPE Coating carbon steel Pipe
3LPE Coating carbon steel Pipe
10 INCH ERW API 5L Grade X42 MS 3LPE Coated Steel Line Pipe
10 INCH ERW API 5L Grade X42 MS 3LPE Coated Steel Line Pipe
API 5l Gr.B 3lpe Coating Seamless Round Steel Pipe
API 5l Gr.B 3lpe Coating Seamless Round Steel Pipe
3lpe coated ssaw thread steel pipe
3lpe coated ssaw thread steel pipe

The three coating layers in 3-LPE coated pipe

3LPE Coated pipe

Layer 1: Usually the corrosion protective layer. This layer is of combination bonded epoxy which offers exceptionally good corrosion protection. The fusion reinforced epoxy contains a very great holding with the blasted steel surface.

Layer 2: This layer is the copolymer adhesive. The copolymer adhesive could be a maleic anhydride united polyethylene compound. This material has great chemical holding to the fusion reinforced epoxy and the beat layer polyethylene.

Layer 3: This layer is for physical protection and comprises polyethylene. Since the copolymer adhesive and polyethylene are comparable, they bond well with each other


3LPE Coated Pipes Features

External anti-corrosion 3LPE Coated Pipe for pipeline protection

Corrosion Resistance :

  • 3LPE Coating prevents steel pipe from corrosion.
  • Excellent chemical resistance properties and resistance to cathodic disbondment.
  • 3LPE Coating has got good resistance to moisture permeability.

Mechanical Protection :

  • Top coat of polyethylene prevents abrasion and damage to fusion bonded epoxy during handling.
  • Polyethylene topcoat permits use of local material without relying on specific backfilling material.

High Bond Strength :

  • The external and internal 3LPE coating and lining is bonded firmly to the mild steel pipe surface and the mean adhesion strength is 125 kg/cm² (ASTM D 4541).

Long Working Life :

  • Pipe has constant performance characteristics through out the life span. Service life of more than 75 years.

Customized Solutions :

  • 3LPE external coating can be applied from diameters 25 mm to 3000 mm with lengths of up to 12m.