What Are Pipeline Coatings?
Definition: Pipeline coatings are protective systems applied to the exterior, and sometimes the interior, of steel pipelines to isolate the metal from soil, water, and the atmosphere and prevent corrosion. On buried and submerged pipelines, the coating is the primary barrier against corrosion and works together with cathodic protection, which protects the steel at any defects in the coating. Pipeline coating services include plant-applied and field-applied systems, girth weld field joints, repairs, and recoating of existing lines.
Pipelines carry crude oil, natural gas, refined products, water, and chemicals over long distances and through plants and terminals. Corrosion is one of the leading threats to pipeline integrity — left unchecked, it causes wall loss, leaks, and ruptures with serious safety and environmental consequences. Most new pipe is coated in a plant, but the welded joints between pipe sections must be coated in the field, and existing pipelines must be recoated as their original coatings age and fail.
Common systems include fusion-bonded epoxy, multi-layer polyolefin coatings, liquid epoxies and urethanes, heat-shrink sleeves for field joints, and abrasion-resistant overlays for directional drilling. Every system depends on proper surface preparation, application within the manufacturer's conditions, and holiday testing to find defects. Pipeline coating work happens in ditches and right-of-way for buried lines and on pipe racks and supports for above-ground piping, where scaffolding is often required. Through Scaffold Exchange, you can find pipeline coating contractors across the U.S. and compare their capabilities and availability.
What Pipeline Coating Services Include
Service offerings vary by contractor, but most pipeline coating firms provide the following capabilities.
Field Joint Coating
Coating of girth welds on new pipelines with liquid epoxy, heat-shrink sleeves, or fusion-bonded epoxy compatible with the mainline coating.
Recoating & Rehabilitation
Removal of failed coatings, surface preparation, and recoating of existing pipelines found to have coating damage or corrosion.
Above-Ground Piping Coatings
Atmospheric coating systems for exposed pipelines, plant piping, pipe racks, and station piping, often applied from scaffolding.
Specialty Systems
Abrasion-resistant overlays for directional drilling, coatings for road and river crossings, and transition coatings at soil-to-air interfaces.
Inspection & Holiday Testing
Surface profile, thickness, adhesion, and holiday detection testing to verify the coating is continuous and properly applied.
Common Applications & Project Types
Pipeline coating services are used across energy, water, and industrial projects throughout the United States.
New natural gas and crude oil pipeline construction
Pipeline integrity digs and coating repairs
Compressor and pump station piping
Refinery, terminal, and plant pipe racks
Water and wastewater transmission mains
Directional drilling and river crossings
Soil-to-air transitions at risers and valves
Bridge-mounted and elevated pipeline crossings
How Pipeline Coatings Compare to Related Services
Pipeline coatings often work alongside other industrial corrosion and coating services. Here is how they compare and which situations each suits best.
Interior protection for tanks and vessels
- Protects internal surfaces from contents
- Chemical and abrasion resistance
- Applied inside confined spaces
- Best for tanks, vessels, and containment
Finding and stopping hidden corrosion
- Insulated piping and vessels
- Inspection, coating, and reinsulation
- Focused on above-ground plant piping
- Best for refinery and plant integrity programs
Corrosion protection for pipelines
- Field joints, recoating, and repairs
- Works with cathodic protection
- Buried, submerged, and above-ground lines
- Best for oil, gas, water, and process pipelines
High-pressure water jetting
- Removes failed coatings and deposits
- Prepares surfaces without abrasive dust
- Used before recoating in plants
- Best for cleaning and surface preparation
Containment of hazardous work
- Captures removed coatings and abrasive
- Required for some legacy coatings
- Protects soil and waterways
- Best for regulated or sensitive sites
Find Pipeline Coating Contractors Near You
Use the Scaffold Exchange map to search by location, filter by service type, and connect directly with local contractors that apply, repair, and inspect pipeline coatings.
OSHA Compliance & Safety Standards
Much pipeline coating work takes place in excavations to expose buried pipe, which falls under OSHA 29 CFR 1926 Subpart P. Standard 29 CFR 1926.651 sets requirements for safe access and egress, hazardous atmospheres, and daily inspection of excavations, and protective systems are generally required in excavations 5 feet or deeper. Pipeline corrosion control itself is regulated by federal pipeline safety rules, which require coating and cathodic protection on many regulated lines. Above-ground work from scaffolds must meet OSHA scaffold requirements.
- Excavations inspected daily by a competent person
- Protective systems in place for excavations 5 feet or deeper
- Safe means of egress in trenches 4 feet or deeper
- Atmospheric testing where hazardous atmospheres may exist
- Coating applied and holiday tested to the specification
- Scaffolds meeting OSHA requirements for above-ground piping
1926.651
Excavations — Specific Requirements — U.S. Construction Regulations
OSHA Interpretations & Rulings →