Pipeline Coatings
Advanced Coating Protection for Industrial Pipelines
Pipelines need to stay protected from the moment each pipe is fabricated to the moment they're taken out of service. The long lifecycle of an oil and gas pipeline requires high-performance protection from coatings that are reliable and proven to guard the assets from abrasion, permeation and, most importantly, corrosion.
Tnemec offers other coating solutions for pipelines in industrial service, including Series 425 Pipe Armor ARO, Series 423 Pipe Armor FJW and Series 431 Perma-Shield PL.
Tnemec in the Oil & Gas Industry
Tnemec has supplied coatings to the oilfield since the early 1920s, when Tnemec founder, Albert C. Bean, Sr., started selling his patented rust-inhibiting primer for ferrous metals through major oilfield supply houses across the nation. Since then, Tnemec has developed protective coatings for every surface encountered in the oil and gas industry. With high-performance always at the forefront, Tnemec offers products for almost any substrate that requires additional protection.
Series 425 Pipe Armor ARO
Abrasion-Resistant Armor for Rugged Pipeline Conditions
Series 425 Pipe Armor ARO is a high-performance, abrasion-resistant overcoat engineered to protect steel pipelines during the most demanding underground and trenchless installation methods, including horizontal directional drilling. Formulated as a 100% solids, plural-component epoxy, it provides a tough, durable protection that safeguards underlying fusion-bonded epoxy (FBE) coatings from gouging, impact, and mechanical stress throughout pulling, drilling, and placement. For operators in oil, gas, and power markets, Series 425 delivers a reliable layer of defense where pipeline integrity is non-negotiable.
Uses + Applications
- Abrasion-Resistant Overcoat for FBE
- Steel Pipelines
- Buried Pipelines
- Oil and Gas Transmission Pipelines
Designed for both efficiency and durability, Series 425 cures rapidly — typically reaching handling and stacking readiness within two to three hours. Its high exothermic sag resistance allows contractors to achieve the required film thickness in a single coat, reducing application time and improving production throughput. This fast cure profile helps streamline schedules, minimize downtime, and keep operations on track without compromising performance.
ENGINEERED FOR STRENGTH, FLEXIBILITY, AND LONG-TERM RELIABILITY
Features + Benefits
- Abrasion Resistant
- Superior Adhesion
- Plural-Component Application
- 100% Solids Epoxy
- Rapid Hardness Development
- Pipe Movement Flexibility
- Resists Cathodic Disbondment
Beyond its abrasion resistance, Series 425 offers exceptional flexibility, rated at 1.14° at 73°F (23°C). This capability allows the coating to withstand bending, flexing, and dynamic stresses common in HDD and other trenchless methods. By combining toughness with adaptability, the system helps maintain coating integrity during installation and ensures long-term protection once pipelines are buried.
Series 425 also delivers advantages in adhesion and corrosion defense, including compatibility with cathodic protection systems to prevent disbondment over time. Its high-build, plural-component application ensures uniform, durable coverage that resists cracking, delamination, and mechanical wear. These performance attributes make Series 425 Pipe Armor ARO a practical, long-lasting solution for safeguarding critical pipeline assets in harsh subsurface environments.
From rapid cure and exceptional hardness to superior flexibility and abrasion resistance, Series 425 is engineered to protect pipelines during installation through decades of service — providing operators and contractors with long-term confidence in every buried asset.
Series 423 Pipe Armor ARO
Advance Protection for Field Joints and Welds
Series 423 Pipe Armor FJW represents Tnemec’s newest innovation in high-performance protection for steel pipelines. Engineered as a 100% solids epoxy, this advanced formulation delivers exceptional defense for field joints, welds, and areas vulnerable to damage during transportation or installation. Its superior adhesion and long-term corrosion resistance help maintain structural integrity while safeguarding pipelines from harsh environmental conditions.
Uses + Applications
- Field Joint Welds (FJW)
- Field Repairs
- Buried Pipelines
- Oil and Gas Transmission Pipelines
Series 423 is easy to apply and highly dependable in the field. Its user-friendly formulation promotes smooth, consistent coverage, allowing contractors to work efficiently while minimizing labor challenges. The fast-curing properties reduce downtime and speed return-to-service—an essential advantage for projects with tight timelines.
Series 423 also offers excellent resistance to cathodic disbondment, ensuring compatibility with pipeline cathodic protection systems. This added layer of durability makes it the coating of choice for reinforcing connection points and repairing sections impacted during handling, transport, or installation. By combining robust protection with practical application benefits, Series 423 sets a new standard for field-joint and weld-coating performance.
Features + Benefits
- Abrasion Resistant
- Superior Adhesion
- Easy Application
- 100% Solids Epoxy
- Rapid Hardness Development
- Pipe Movement Flexibility
- Resists Cathodic Disbondment
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