Pin Line Coating

Hook, coat, and bake nearly any volume of manufactured parts — a production-line process built for high-throughput repeat runs with consistent finish quality across every batch.

What Is Pin Line Coating?

Pin line coating is a production method where individual parts are fixtured on hooks or pins, moved through a coating application station, and then run through a bake/cure oven — all in a continuous or semi-continuous workflow. It’s designed for manufactured parts that need consistent, repeatable finishes across high-volume runs.

Because each part is individually hung, the process delivers uniform coverage and controlled film build — with the ability to mask specific areas (threads, bores, mating surfaces) and control coating placement precisely. The result is a production-grade finish that meets spec every time, batch after batch.

Common Applications

Hook, Coat, Bake

A streamlined workflow built for throughput and consistency on repeat production runs.

Prep & Pre-Treat

Parts are cleaned and optionally pre-treated with zinc phosphate for improved adhesion and corrosion performance.

Fixture & Mask

Each part is hung on hooks or pins. Critical areas — threads, bores, tight tolerances — are masked to prevent coating where it’s not wanted.

Coat

Coating is applied as parts move through the line — spray, dip, or flow-coat depending on the system and part geometry.

Bake & Cure

Parts go through a curing oven at the required temperature and duration for the coating system — then cool, inspect, and ship.

Compatible Systems

Pre-Treatment & Coating Options

Pin line processing pairs with several pretreatment and coating systems depending on your performance requirements.

Pre-Treatment

Zinc Phosphate

Optional zinc-phosphate pretreatment prior to coating, widely used to improve corrosion protection and wet adhesion at the coating-to-substrate interface. Recommended for parts that will see moisture, chemical exposure, or demanding service conditions.

Coating System

Fluoropolymer / Teflon (PTFE)

Pin line processing pairs particularly well with fluoropolymer systems like PTFE (Teflon), where parts and bake limits match the required cure temperatures — often 725–750°F depending on the specific product. Ideal for non-stick, low-friction, and chemical-resistant applications.

Ideal Applications

Best For

Pin line is the right method when parts can be hung individually and you need controlled, repeatable coating across production volumes.

High-Volume Production

Repeat runs of manufactured parts where consistency and throughput matter — scheduled production with predictable output.

Parts with Hang Points

Components that have natural fixture points — holes, hooks, brackets — allowing them to be hung for uniform coating and cure.

Precision Masking Needs

Parts requiring controlled coating placement — threads left clean, bores uncoated, tight-tolerance surfaces protected during the process.

Need to Coat Small Parts in Bulk?

If your parts are too small to hang efficiently — fasteners, clips, small brackets — our Dip & Spin process may be a better fit. It handles high-quantity small parts by submerging, spinning, and baking them in bulk.

Get a Quote or Schedule a Consultation

Get a Pin Line Coating Quote

Send us your part material, dimensions, quantity per run, repeat schedule, coating requirement, and any masking or pretreatment needs (zinc phosphate) — plus bake limits if you’re running fluoropolymer/PTFE.

Phone: (585) 289-8080
Email: info@sandmans.net
Address: 2495 Brickyard Road, Canandaigua, NY 14424
Hours: Monday–Friday 8:00 AM – 4:30 PM

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