API 3PE/3PP Coating Cold Drawn Carbon Steel Pipe
The pipe features a three-layer PE anti-corrosion structure: the first layer consists of epoxy powder (FBE > 100um), the second layer uses an adhesive (AD) at 170 ~ 250um, and the third layer is polyethylene (PE) measuring 2.5 ~ 3.7mm. The integration of these layers with the solid steel pipe forms a robust coating. With a diameter range of 60mm-1420mm and wall thickness of 2.5-18mm, this method significantly enhances the service life to approximately 50 years.
High Tightness
Ensures energy savings, reduces operational costs, and provides long-term environmental protection.
Strong Resistance
Excellent corrosion and impact resistance with low water absorption (PE less than 0.01%).
Durability
High strength epoxy and hot melt adhesive softness ensure a reliable lifespan of 30-50 years.
| Parameter |
Standard / Detail |
| Standard |
DIN30670, CSA Z245.21, CSA Z245.20, AS1518, AWWA C213 |
| Material |
GR.B, X42, X52, X60, X70, Q235, Q275, Q345 |
| Range |
DN200 - DN2000 |
| Usages |
Water, gas, air, steam, oil, and petroleum industries; suitable for underground and boiler systems. |
| Pipe Size (mm) |
Epoxy Powder |
Adhesive (um) |
Min Wall Coating (Usual) |
Min Wall Coating (Strengthen) |
| ≤100 |
≥80um |
- |
1.8 mm |
2.5 mm |
| 250 |
≥80um |
170-250 |
2.0 mm |
2.7 mm |
| 500 |
≥80um |
- |
2.5 mm |
3.2 mm |
| DN≥800 |
≥80um |
- |
3.0 mm |
3.7 mm |
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Frequently Asked Questions
What is the structure of the 3PE anti-corrosion coating?
The 3PE structure consists of three layers: an inner layer of epoxy powder (FBE), a middle layer of adhesive (AD), and an outer layer of polyethylene (PE). This combination provides superior protection against corrosion.
What is the typical service life of these pipes?
Under normal underground operation, 3PE anti-corrosion steel pipes can achieve a service life of 30 to 50 years, significantly reducing maintenance and replacement costs.
In which industries are these pipes commonly used?
They are widely used in pipeline transport for oil and gas, water distribution, chemical industries, mining, and sewage systems.
What are the water absorption characteristics of the PE layer?
The polyethylene (PE) layer has extremely low water absorption, typically less than 0.01%, which helps maintain the pipe's integrity in wet underground environments.
How are the pipe ends protected during transport?
Pipe ends are typically fitted with plastic caps to protect against damage. Depending on the size, they can be plain or beveled according to customer requirements.
What standards do the pipes comply with?
Our pipes meet international standards including DIN30670, CSA Z245.20/21, AS1518, and AWWA C213.