Three Layer Polypropylene(3LPP) Steel Pipe

3-Layer Polypropylene or also known as 3LPP pipe coating comprises three layers. Similar to 3LPE coated Layer, the first layer is the fusion-bonded epoxy (FBE) and the second layer is copolymer adhesive, what distinguishes them is the top surface layer: polypropylene, which provides a higher temperature resistance ranging from -40℃ to 140℃

The three layers of external coating have excellent chemical resistance properties and resistance to abrasion, acid, alkali and cathodic disbanding, etc. The 3LPP coating is commonly applied on large diameter carbon steel pipes and the service life of steel pipe with 3LPP coated can be more than 75 years. 3LPP steel pipe has a wide application for transportation, bridge pipeline used in oil & gas, drinking water pipelines and plant process water.

Specification

• DIN 30670
• CSA Z245.21
• AS 4321
• IS 3581

3LPP Steel Pipe Specifications

Size	O.D: 114.3-3020 mm W. T.  5—60mm; Length:6000mm-12000mm
Material	ASTM A53 pipe (Grade B) ASTM A106 pipe (Grade B/C) API 5L Grade B/X42/ X52/ X65/ X80, PSL1/ PSL2 line pipe
Coating Thickness	Maximum 4.2 mm
3LPP coating standard	DIN 30670/ AWWA C200/ AWWA C210/ AWWA C213/ CSAZ245
Temperature range	-40°C to 140 °C.

As one of the leading supplier and manufacturers of coating carbon steel pipe in China, WLD steel provides not only single but also dual-layer FB, 3LPE/ 3LPP and internal epoxy coating for applications in buried or submerged applications. With the partnership of the major steel mills in China, comprehensive advanced coating measures are provided for your pipe needs.