3LPP Coating Steel Pipe

Tianjin Lefin Industrial Co., Ltd is one of the most experienced manufacturers and suppliers of 3lpp coating steel pipe in China. Please feel free to buy high quality 3lpp coating steel pipe from our factory. Good service and reasonable price are available.

3LPP Coating Steel Pipe

Application: Used for pipelines of natural gas, petroleum, water & sewage, and pipe systems

Standard: DIN 30678 Polypropylene coatings on steel pipes and fittings - Requirements and testing.

Size: DN50-DN2200

End: Plain End/Beveled End, Burr Removed

3-Layer Polypropylene (3LPP) is a multilayer coating composed of three functional components; a high performance Fusion Bonded Epoxy (FBE) primer, followed by a copolymer adhesive, and an outer layer of polypropylene which provides one of the toughest, most durable pipe coating solutions available. 3LPP systems provide excellent pipeline protection for small and large diameter pipelines at up to high operating temperatures.

Polypropylene is a perfect material, displaying high mechanical and thermal resistance.

Polypropylene hardness reaches 64 points in the Shore “D” scale, which is more than polyethylene. Moreover, polypropylene yielded higher results in the case of destructive tests carried out in low temperatures (in comparison to polyethylene), e.g. resistance to the environmental stress corrosion – ESCR (>3000 h for polypropylene and > 1000 h for polyethylene).

Polypropylene is resistant to UV radiation (contains UV stabilisers) and displays high thermal resistance as it is intended to be used in high temperatures (polyethylene in max. 60° C and 80°, whereas polypropylene operation temperature reaches 100°C and 110°C).

3LPP coating protects steel pipes efficiently against mechanical damage.

3LPP Pipe Coating is used for construction of long distance pipelines for combustible liquids and gases, nuclear station pipelines, heating system pipelines, general-purpose pipelines, vessels, mechanical engineering and instrumental engineering.