Coated Steel Pipe Production
Advanced anti-corrosion coating solutions including 3PE, FBE, epoxy, polyethylene, and cement mortar lining for oil & gas pipelines, water supply, and marine applications.
ISO 21809-1 | AWWA C210 | DIN 30670 | CSA Z245.20 | SY/T 0315
What is Coated Steel Pipe?
Coated steel pipes are protected against corrosion by applying specialized coating systems to the external and/or internal surface. The most common coatings include 3PE (three-layer polyethylene), FBE (fusion bonded epoxy), and cement mortar lining. These coatings significantly extend the service life of buried and submerged pipelines.
Our automated coating facilities operate 3PE, FBE, epoxy, and cement mortar coating lines capable of handling pipes from 2″ to 120″ OD. Every coated pipe undergoes rigorous holiday detection, thickness measurement, and adhesion testing before delivery.
Manufacturing Process
From pipe preparation to final inspection — every coating step ensures maximum corrosion protection.
Pipe Inspection
Incoming bare pipe inspected for dimensions, surface, and defects.
Surface Prep
Grit blasting to Sa 2.5 (near-white metal) surface preparation.
Pre-Heating
Pipe preheated to remove moisture and optimize coating adhesion.
FBE Primer
Fusion bonded epoxy primer applied by electrostatic spray (150-400μm).
Adhesive Layer
Hot-melt adhesive copolymer applied over FBE primer.
PE Top Layer
Extruded polyethylene or polypropylene top layer (1.8-3.7mm).
Water Cooling
Controlled water spray cooling to set and cure the coating.
Holiday Test
100% holiday (pinhole) detection at 5-25kV per coating standard.
Thickness Check
Coating thickness measured at 12+ points per pipe length.
End Beveling
Coating removed from pipe ends, beveled for field welding.
Our Coating Services
Complete range of internal and external anti-corrosion coating solutions for every application.
3PE Coating
ISO 21809-1. FBE + adhesive + PE/PP. 50+ year service life. 5-25kV holiday test.
FBE Coating
Fusion bonded epoxy. 250-500μm single layer. High temperature resistance to 95°C.
Cement Mortar Lining
AWWA C205/C210. For water pipes. 12-25mm thickness. Smooth hydraulic surface.
Epoxy Coating
Solvent-free liquid epoxy. For internal corrosion protection. NSF 61 certified.
Polyethylene Lining
PE or PE-lined pipe for gas and water. Smooth bore, low friction loss.
Bitumen / Coal Tar
Traditional coating for water and sewage. EN 10288 compliant.
Technical Specifications
3PE (ISO 21809-1)
FBE: 150-400μm primer
Adhesive: 170-250μm
PE top: 1.8-3.7mm (2PE/3PE)
FBE (CSA Z245.20)
Single layer: 250-500μm
Dual layer: FBE + abrasion overlay
Temp range: -30°C to +95°C
Cement Mortar (AWWA C205)
Thickness: 12-25mm
Compressive strength: 4000+ psi
Water absorption < 8%
Epoxy Internal
NSF 61 certified for potable water
Thickness: 250-400μm
Smooth surface, low friction
PE Lining
Dense polyethylene for gas/water
Oxidation induction time > 20 min
UV resistant, food grade available
Testing Standards
Holiday test: 5-25kV per standard
Peel test: >70 N/cm (3PE)
Cathodic disbondment < 10mm
1,000+
km Coated Annually
2″ – 120″
Pipe Diameter Range
6+
Coating Types
20+
Years of Experience
Application Scenarios
Oil & Gas Pipelines
3PE coated pipes for onshore and offshore oil & gas transmission pipelines. Provides 50+ year corrosion protection in buried soil environments with cathodic protection compatibility.
Water Supply Networks
Cement mortar lined and epoxy coated pipes for potable water transmission. NSF 61 certified for drinking water contact. Prevents tuberculation and maintains water quality.
Marine & Offshore
Multi-layer polypropylene (3PP) coated pipes for subsea pipelines and offshore platforms. Enhanced UV resistance and mechanical protection for harsh marine environments.
Ready to Source Coated Steel Pipe Production?
Contact our team for competitive pricing, quality assurance, and reliable worldwide delivery.
Email: [email protected] | WhatsApp: +86 15602135951