3PE Coated Seamless Carbon Steel Pipe – Buried Pipeline Anti-Corrosion Grade
Product Overview
3PE coated seamless steel pipe is a fully corrosion-protected piping solution designed for buried pipeline applications. The 3-layer polyethylene coating system provides outstanding chemical corrosion resistance, mechanical abrasion resistance and long-term durability in underground soil environments. Built on high-quality seamless carbon steel base pipe with factory-applied anti-corrosion coating, it delivers a ready-to-install pipeline solution with decades of maintenance-free service life.
Why Choose CNB 3PE Coated Pipe?
Our 3PE coating is applied on automated continuous coating lines with strict process control over surface preparation, coating application and curing. Every coated pipe undergoes full quality inspection including holiday detection, thickness measurement and adhesion testing to guarantee defect-free corrosion protection. We offer both standard and heavy-duty coating thicknesses for different soil corrosivity levels, and can supply complete coated pipe systems with matching fittings.
Key Specifications
| Item | Specification |
|---|---|
| Product Name | 3PE Anti-Corrosion Coated Seamless Steel Pipe |
| Base Pipe Grade | ASTM A106 Gr.B / Q235B seamless |
| Coating System | 3-Layer Polyethylene (3PE) |
| Coating Thickness | 2.0mm – 3.7mm (standard / heavy duty) |
| Outer Diameter Range | 2" – 48" (60.3mm – 1219mm) |
| Wall Thickness Range | SCH20 – SCH80 |
| Standard Lengths | 6m / 12m fixed length |
| End Preparation | Beveled end with bare end for field welding |
| Applicable Standards | SY/T 0413, DIN 30670, ISO 21809 |
| Expected Service Life | 30–50 years in normal soil |
| Inspection | Holiday detection, thickness, adhesion test |
Core Advantages
- Superior corrosion protection: 3-layer system provides excellent chemical and electrochemical corrosion resistance.
- Long service life: 30–50 years maintenance-free service in buried environments.
- Mechanical damage resistance: Tough polyethylene outer layer resists impact and abrasion during installation.
- Factory-applied quality: Automated coating application delivers more consistent quality than field coating.
- Complete system solution: Available with matching coated fittings for full pipeline corrosion protection.
Applications
This 3PE coated seamless pipe is widely used for buried water supply pipelines, sewage drainage systems, oil & gas gathering lines, municipal engineering pipelines, chemical waste pipelines and underground utility networks.
Get a Quotation
We supply 3PE, FBE and other anti-corrosion coated pipes in various base pipe grades and sizes for buried pipeline projects. Custom coating specifications and matching coated fittings are available upon request. Contact our pipeline solutions team for a detailed project quotation.
