Denso North America

Denso North America

Manufacturer of a complete line of marine pile protection systems. These systems include underwater epoxies, injectable epoxies, epoxy grouts, fiberglass forms, petrolatum tape wrap systems, etc. In business for 136 years, Denso is recognized as the global leader in corrosion prevention and sealing technology.

Denso North America Inc. has offices throughout the USA and Canada and is a wholly owned subsidiary of Winn & Coales International originally established in London, England in 1883. Denso tape was developed over 80 years ago for the "Long Life Protection" of buried steel pipelines against corrosion.

Denso's anti-corrosion and sealing products have a proven track record of solving problems in all kinds of challenging environments worldwide, above or below ground and underwater. Denso's products and systems are backed by a team of qualified professionals who provide technical support and on-site guidance.

About Denso North America Products

Denso North America offers a number of products to meet your Corrosion Prevention and Sealing needs. Click the links in the descriptions below to learn more. And don't forget to check out our Monthly Product Spotlight.

Protal Pipeline Liquid Coatings

Protal is Denso’s line of Protective Pipeline Coatings that can be applied by hand or spray method. We offer a full range of fast cure, high build epoxies for a variety of above and below ground corrosion protection. Our Protal Pipeline Liquid Coatings can easily be applied in high and low temperature environments. Our anti corrosion coatings are also great for protecting girth welds, tie-ins, cadwells, fittings, fabrications, repairs to FBE and rehabilitation to existing pipelines. Our pipeline coatings are high build, up to 50 mils in one coat.

Petrolatum Tape Systems

Denso’s Petrolatum Tapes or Wax Tapes have been around over 80 years, with Denso Tape being the first one developed. These high performance petrolatum tape products provide above & below ground and underwater protection to pipelines, fittings, tank bases, steel structures and many more. Our petrolatum tape wrap systems can easily be applied by hand to most surfaces in arctic and tropical temperature environments.

Sealing and Molding

Denso’s self-supporting molding compounds for irregular surfaces, such as flanges and couplings, used in conjunction with petrolatum tape or wax tape systems. They provide a smooth profile to minimal prepared surfaces (SSPC SP 2-3) and contain no VOC’s. Water, acid or salts from the environment do not affect Denso’s sealing and molding mastics.


Denso paste and primers are used in conjunction with petrolatum tape and SeaShield Marine corrosion control systems. Our primers contain moisture displacing corrosion inhibiting compounds that is easily applied by hand or brush.

Bitumen Tapes and Butyl Tapes

High performance adhesive tapes for above ground and below ground pipeline corrosion protection, weld joints, fittings, fabrications and repair of geomembranes. Denso offers a complete line of cold and hot applied tapes ranging in 10 to 80 mils in thickness.

Protective Outerwraps

To protect your pipeline’s external corrosion coatings during installation, from directional drilling and rocky backfills to name a few, Denso offers an array of Protective Outerwraps. From fiberglass spacers to protective pipeline mesh Rock Shield we got you and your pipelines covered.

SeaShield Marine Systems

Denso SeaShield Marine Systems offers a full range of steel, concrete and timber pile rehabilitation systems that include petrolatum tapes, wax tapes, fiberglass jackets, epoxy grouts and many other products.

Archco Rigidon Coatings and Linings

Denso Archco Rigidon Coatings and Linings is a range of coatings and linings for rigs, tanks and many other applications.

Road Products

A full line of road and maintenance products that are rugged, flexible and seals asphalt to steel and / or concrete surfaces.

Tank Base Protection System

Denso’s new Tank Base Protection System provides a cost effective and commercially proven repair solution for outer tank bases and chimes. Utilizing primers, mastics, petrolatum tapes and topcoats to help protect and repair outer tank bases and chimes.

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