Tianjin Lefin Industrial Co., Ltd is one of the most experienced manufacturers and suppliers of 3lpp coated steel pipe in China. Please feel free to buy high quality 3lpp coated steel pipe from our factory. Good service and reasonable price are available.
3LPP Coated Steel Pipe (3LPP pipes refer to 3 Layer Polypropylene pipes. )
Type: Class C
Standard: ISO 21809-1 Petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline transportation systems — Part 1: Polyolefin coatings (3-layer PE and 3-layer PP)
| Pm Kg/m |
Total Coating Thickness/ mm | ||
| Polypropylene/ mm | |||
| Class C (PP) | |||
| Class C1 | Class C2 | Class C3 | |
| <Pm≦15 | 1.3 | 1.7 | 2.1 |
| 15<Pm≦50 | 1.5 | 1.9 | 2.4 |
| 50<Pm≦130 | 1.8 | 2.3 | 2.8 |
| 130<Pm≦300 | 2.2 | 2.5 | 3.2 |
| 300<Pm | 2.5 | 3 | 3.8 |
| Design Temperature Range (℃) | -20 to +110 | ||
| Class 1 is for light duty (onshore sandy soil). | |||
| Class 2 is for moderate duty (clay soils, absence of backfill). | |||
| Class 3 is for heavy duty (rocky soil or offshore). | |||
| The required total coating thickness may be reduced by a maximum of 10% on the weld seam for SAW-welded pipes. | |||
3LPE Carbon steel pipe
Carbon Steel Grades: ASTM A 106/ASTM A53 GR.B
Low Temperature Grades: ASTM A 333 Gr. 6
Line Pipes: API 5L PSL1/PSL2 Grade B, X42-X80
Schedule: Sch 5, Sch 10, Sch 20, Sch 40, Sch 80, Sch 160, Sch XXS
HIGH TEMPERATURE CORROSION PROTECTION
- The FBE component of the 3LPP system provides excellent adhesion to steel, providing superior long term corrosion resistance and protection of pipelines operating at high temperatures
- The superior adhesion properties of the FBE also results in excellent resistance to cathodic disbondment, reducing the total cost of cathodic protection during the life of the pipeline
ENGINEERED SOLUTIONS
- Advanced manufacturing techniques allow the 3LPP system to be customized to your specific project
- Can be applied in a wide range of thicknesses to cost effectively meet unique project specifications and performance requirements
EXCELLENT MECHANICAL PROTECTION
- The tough outer layer of polypropylene protects pipelines during transportation and installation thereby reducing costly repairs and providing added in-ground protection against shear forces, chemicals and abrasive soil conditions
- By increasing the thickness of the polypropylene outer layer, 3LPP can provide the highest level of mechanical protection across many diverse environments without requiring the use of costly select backfill
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