Clear protection or colorful identification.

Metal conduit box

Tube & Pipe Coatings

Hentzen designs corrosion inhibiting coatings for metal tube and pipe exterior surfaces. With instant curing and corrosion protection, we help ensure pipelines are resistant to chemicals and harsh environmental conditions. We also offer a full range of vibrant colors, and custom and color-matching capabilities for instant identification of individual Electrical Metallic Tubing (EMT) tubes and pipes for emergency, power, healthcare, datacom, electrical systems and other solutions. Our coatings are fit for a wide variety of tube and pipe dimensions, and can be applied using various techniques such as spray, dip or brush.


Galvanized steel pipe
Pipe cut for construction
Galvanized steel electrical pipe
Galvanized steel fence post
Coated black fence
Colored electrical metallic tubing
Tapco metal tubing

Formulated for industrial strength applications.

We engineer coatings that protect against corrosion and help maintain physical properties after extended outdoor use. Our clear coats have unmatched adhesion properties and prevent rust by evenly sealing exterior steel and aluminum substrates used in tubes and pipes. Vibrant EMT colors are also available for easy identification and long lasting protection.

Liquid Coatings

Hentzen’s custom water and solvent-based coatings for ERW seam welded tubes are formulated for electrical conduit and structural steel tubing. Our coatings excel at protecting Galvanized or bare steel exterior and interior surfaces. Zen-Tube™ coatings are designed to be applied via spray, vacuum box or flood and wipe. Almost instant dry properties for in-the-mill or off-line coating application.

Zen-Tube™ OD Coatings

Zen-Tube™ water based OD coatings are low VOC acrylic coatings designed to be mill and offline applied. Both clear and pigmented coatings exhibit very good corrosion protection, UV resistance, excellent film formation and extremely fast dry with minimal heat. Zen-Tube™ OD coatings protect galvanized surfaces from white rusting in the field or in storage and are acceptable primer bases for polyester TGIC powder coating applied to tubular fence framework.

Typical Applications: Tube and pipe coatings for emergency, power, healthcare, datacom, electrical systems and other solutions.

Powder Coatings

Hentzen is a leader in powder coating technologies, formulating solutions matched to performance and market-driven specifications. Quality starts with custom engineering by chemists and technical specialists who pursue solutions to corrosion, weatherability, aesthetics and durability.

Dura-Zen™ Polyester

Dura-Zen™ Polyester/TGIC powder coatings are highly durable and have good chemical resistance, offer excellent UV resistance and good corrosion resistance. Suitable for both interior and exterior products and available in several degrees of durability including standard durable TGIC (good), super durable (better) and ultra-durable (best). Polyester powder coatings typically exhibit good edge coverage, flow and leveling. Can be formulated in smooth, textures, river textures, veins, leather textures and more.

Typical Applications: Agriculture and construction equipment, recreational vehicles, aluminum extrusions, automotive parts, air conditioners, point-of-purchase displays, fencing, gas cylinders, lawn and garden equipment, lawn furniture, appliances, pipe coatings and electrical enclosures.

Lower VOCs contribute to healthier air

Focused on the environment.

Hentzen developed environmentally friendly coatings long before the words sustainability, green or even environment were in vogue. We lead the industry in developing low-solvent content coatings; coatings free from hazardous air pollutants and organic pigments that replaced heavy metal types, and coatings that reduce Volatile Organic Compounds (VOC) emissions.