ASTM A653 Bonderized Steel Sheet and Coil Supplier
Every hour a crew spends cleaning and priming steel before the first coat is an hour taken away from the rest of the job. Bonderized steel arrives with a built-in primer layer. Curtis Steel Company supplies ASTM A653 bonderized steel sheet and coil, known in the trade as paint grip or paint lock steel. Its phosphate-treated surface holds paint, and the zinc coating underneath fights corrosion.
Fabricators and OEMs in construction, manufacturing, and component production order our G90 bonderized coil and sheet straight from Texas inventory.
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Paint Grip Steel That Arrives Primed for the Paint Line
Bonderized steel starts as ASTM A653 hot-dip galvanized steel. The mill cleans and rinses each coil, then runs it through a controlled phosphate bath that converts the zinc surface into a crystalline zinc phosphate layer.
A dried-in-place chromate seal finishes the surface and gives paint grip steel its dull gray color. That surface takes both liquid paint and powder coating across a wide range of applications. Plan to paint bonderized steel soon after installation, because a bare phosphate layer can develop white rust.
Where Bonderized Steel Earns Its Place on the Job
Contractors and manufacturers choose bonderized steel sheet and coil for parts where the paint has to last. Its dull gray surface also blends well under architectural coatings. Common uses include:
- Flashing, gutters, and downspouts
- Roofing and trim components
- Signage and lighting housings
- Enamel-coated fixtures and appliance panels
- Fabricated or stamped parts that need lasting paint adhesion
Construction crews, automotive suppliers, and equipment manufacturers count on paint grip steel for a consistent finish that speeds up painting and cuts rework.
Bonderized Steel Sheet and Coil Specs at a Glance
Curtis Steel stocks bonderized sheet and coil in popular gauges and widths:
- Product Coated: Bonderized / Paint Grip
- Specification: ASTM A653
- Grade: CS-B
- Gauges: 18 to 26 GA
- Widths: 48" and 60"
- Coating: G90
- Treatment: CT-Dry
| Thickness | Width | Width | Width |
|---|---|---|---|
| 18GA (.0566 MAX - .0466 MIN) | *** | 48 | 60 |
| 20GA (.0506 MAX - .0356 MIN) | *** | 48 | 60 |
| 22GA (.0436 MAX - .0296 MIN) | *** | 48 | 60 |
| 24GA (.0316 MAX - .0236 MIN) | *** | 48 | 60 |
| 26GA (.0247 MAX - .0187 MIN) | *** | 48 | 60 |
Additional thicknesses and coil sizes are available upon request.
Slit, Sheared, and Stocked by a Paint Lock Sheet Metal Supplier in Texas
As a paint lock sheet metal supplier with in-house metal processing, Curtis Steel slits, cuts to length, shears, and blanks bonderized coil to the dimensions your production line or install crew needs. We offer custom packaging to protect the surface in transit.
We source from established mills and store material in controlled conditions, which protects the phosphate surface until it reaches your paint line. Our local truck fleet and logistics network keep ongoing projects and high-volume schedules supplied.
When Galvannealed Makes Sense for Your Painted Parts
Some painted jobs call for a different surface. Galvannealed steel carries a zinc-iron alloy coating that takes paint readily and welds easily. That makes it a common pick for parts that get formed and welded before they reach the paint booth.
Curtis Steel stocks both products, so our sales team can compare them against your part and finishing process before you order.
Get a Quote From a Bonderized Steel Coil Supplier With Stock on the Floor
Your paint crew can't start until the steel shows up, so every day spent waiting on material pushes the finish date back. Send us the gauge, width, and quantity of bonderized steel you need, in coil or cut sheet, and we'll quote it from inventory in Houston, Dallas-Fort Worth, and Harlingen.
Request a quote today, and work with a paint grip steel supplier that has kept Texas contractors and fabricators stocked since 1976. Contact the team at 1-800-749-4621 or request a quote online to discuss specifications, pricing, and lead times.