External pipe coating machine: long-term corrosion and mechanical protection
Bauhuis supplies turnkey three-layer external pipe coating plants for steel pipes used in demanding onshore and offshore environments.
Pipes from 4" to 120" in diameter
Fully integrated blasting and coating lines, from pre-washing to inspection
External pipe coating equipment built to international standards
Turnkey external pipe coating plants
Bauhuis designs and delivers turnkey external pipe coating plants for pipes ranging from 4" to 120" in diameter. Each plant is engineered to meet the required output, fit into the available space and apply coatings as per international standards, All external pipe coating equipment in the line work as one integrated system.
A complete external pipe coating plant from Bauhuis integrates the following process stations:
Pre-washing
Pre-heating
External blasting
Phosphoric acid and chromate treatment
Main Induction heating
FBE application
Adhesive application
PE or PP extrusion
Quenching
Pipe end-cleaning
Inspection
Single, dual or 3-layer coating system
The Bauhuis external pipe coating line can apply single layer (FBE only), Dual (2 layers of powder FBE and ARO) or a three-layer coating system consisting of :
Fusion bonded epoxy (FBE) base layer (for anti-corrosion)
Adhesive copolymer or intermediate bonding layer
Outer layer of PE or PP (for mechanical protection)
All systems can be built to comply with international standards, including CAN/CSA-Z245.21, NFA 49-710, DIN 30670–30678 and EN 10285.
Key features of Bauhuis 3-layer coating plant
Design for pipes from 4" to 120" in diameter
Fully integrated line: from pre-washing to final inspection
Three-layer coating system (FBE, adhesive, PE/PP)
Flexible configuration to match project requirements
Enclosed, low-maintenance blasting system with media reclaim
Compliance with CAN/CSA-Z245.21, NFA 49-710, DIN 30670–30678 and EN 10285
Reliable surface preparation
Surface preparation is critical for strong coating adhesion. The Bauhuis external pipe blasting system is a fully enclosed unit that cleans the outer pipe surface with precision and consistency.
Turbine wheels powered by electric motors
Hardened steel lining to reduce wear and maintenance
Integrated blast media reclaim system for continuous operation
Bauhuis blasting systems achieve SIS SA 2,5 or 3 / ISO 8501-1 / SSPC-SP-5 surface cleanliness levels and are designed in line with API 5L, ISO 8501-1, ISO 8502-3 and ASTM D4940.
Your external pipe coating setup
Frequently asked questions about external pipe coating
What is a three-layer pipe coating?
A three-layer coating combines a fusion bonded epoxy (FBE) base layer for corrosion protection, an adhesive copolymer that bonds the 1st and 3rd layers together, and an outer layer of PE or PP for mechanical protection. Together, these layers protect the pipe against corrosion, impact and harsh operating conditions.
Should I choose a PE or PP outer layer?
It depends on your operating conditions. PP is typically used for higher operating temperatures and greater mechanical resistance, while PE suits pipelines with moderate operating temperatures.
Which pipe diameters can a Bauhuis external pipe coating machine handle?
Bauhuis designs external coating plants for pipes from 4" to 120" in diameter. Each plant is engineered around your required output, available space and coating specification.
Can I order only a part of the coating line?
Yes, Bauhuis can carry out an inspection of your plant and advise how to bring your facility to a higher safety and quality standard. Based on the outcome of the plant survey, certain sections in the plant are upgraded
Which standards do the systems comply with?
The coatings applied in Bauhuis built plants comply with CAN/CSA-Z245.21, NFA 49-710, DIN 30670–30678 and EN 10285 standards. The blasting systems achieve SA 2,5 or 3 / SSPC-SP-5 cleanliness and are designed in line with API 5L, ISO 8501-1, ISO 8502-3 and ASTM D4940 standards.