If you’ve ever seared a steak in a heavy cast-iron skillet only to fumble with a flimsy non-stick coating that chips after a few uses, or struggled to clean a burnt-on mess without scratching the surface, enamel cookware might be the quiet workhorse your kitchen has been missing. For over a decade, I’ve run a small enamel cookware supplier, and I’ve spent countless hours on factory floors, talking to the craftspeople who turn plain steel blanks into pieces that last for generations. A lot of people see enamel cookware as just “painted metal,” but it’s a precise, multi-step process that balances heat resistance, durability, and safety—no shortcuts allowed. Today, I’m pulling back the curtain on how our enamel pieces are made, straight from the perspective of someone who’s built their business on this craft. Enamel Cookware
The process starts long before any color goes on a pan. The foundation of every piece of enamel cookware is a carbon steel blank, and the first step is prepping that steel to ensure the enamel sticks properly. Not just any steel works here; we source low-carbon steel, because it’s flexible enough to form into skillets, stock pots, and Dutch ovens without cracking during shaping, but rigid enough to hold its shape after repeated high heat exposure. First, the steel goes through a degreasing bath. This isn’t just a quick wipe-down—we submerge the blanks in a heated alkaline solution that cuts through the industrial oils and lubricants used during steel manufacturing. If even a tiny bit of oil or grease remains, the enamel will bubble or peel down the line, so this step is non-negotiable. After degreasing, the blanks are rinsed thoroughly with deionized water to remove all residue, then dried in a conveyor oven at around 120 degrees Celsius.
Next comes pickling, a step that might sound harsh but is critical for adhesion. The steel’s surface has a thin layer of iron oxide (the dull, gray stuff you see on unused metal), and that oxide has to be removed for the enamel to bond. We dip the blanks into a dilute solution of hydrochloric acid, a process that eats away the oxide layer evenly across the entire surface. We keep a close eye on the acid concentration and temperature here; too strong, and it will etch the steel too deep, leaving a rough, weak surface; too weak, and it won’t remove enough oxide. Once pickling is done, the blanks get another round of rinsing—this time with cold water to stop the acid from reacting further—and a final rinse with a mild alkaline solution to neutralize any remaining acid. The result is a matte, slightly rough steel surface that’s ready for the first enamel coat.
Now for the first of two enamel layers: the ground coat (or undercoat). Enamel itself isn’t paint—it’s a finely ground mixture of minerals like quartz, feldspar, borax, and metal oxides, plus a small amount of binder that helps it adhere to steel when fired. The ground coat has a unique chemical makeup designed to create a strong bond between the steel and the outer color coat. If you skip the ground coat, the outer color layer will chip off after a few uses, so we never cut this corner. The blanks are coated in the ground coat using one of two methods: dipping or spraying. For skillets and stock pots, we usually use dipping—submerging the steel blank into a vat of liquid enamel slurry (ground enamel mixed with water and additives) for a set amount of time, then letting the excess drain off. For smaller, more intricate pieces, or for coatings that need extra evenness, we use automated spray guns that apply a thin, uniform layer across the entire surface.
After coating, the blanks go into a drying oven to evaporate all the water from the slurry. If we tried to fire wet enamel, the water would turn to steam and bubble through the coat, creating defects. We dry them slowly at around 150 degrees Celsius over 10 to 15 minutes, just enough to leave a soft, dry layer of enamel powder on the steel without burning it. Then comes the most important step: firing. The blanks move through a tunnel furnace heated to around 800 degrees Celsius, where the enamel particles melt and fuse to the steel’s surface. This takes just a few minutes—too long, and the steel will warp, too short, and the enamel won’t melt enough to form a solid bond. When the blanks come out of the furnace, they cool to room temperature naturally over an hour. At this point, we check every piece for defects: bubbles, uneven coverage, or spots where the enamel didn’t stick. Any that don’t pass go back for re-coating—no exceptions.
Once the ground coat is approved, it’s time for the outer color coat, the part that gives enamel cookware its signature vibrant look. The color coat is similar to the ground coat, but with added metal oxides like cobalt, iron, or chromium that create those deep reds, blues, whites, and neutrals we all love. The application process is almost identical to the ground coat: we dip or spray the blanks, then dry them, then fire them. The only difference is the firing temperature—we keep it around 750 degrees Celsius, a little lower than the ground coat, to prevent the color pigments from burning or fading. For pieces that have a glossy finish, we add a small amount of titanium dioxide to the color coat; for a matte finish, we adjust the particle size of the enamel powder to create a softer texture.
Here’s where we add the finishing touches that make our cookware stand out. For Dutch ovens and stock pots, the handles and knobs are usually made of cast iron or steel, and they get their own enamel coating to match the body of the piece. We coat the metal handles separately, fire them, then attach them to the main body using rivets—no adhesives, because adhesives will break down with repeated high heat. For skillets, the interior surface is often left bare or coated with a thin layer of cast iron seasoning, but for our non-stick enamel options, we add a food-safe, PFOA-free non-stick layer to the interior after the outer color coat is fired. We also do a rim grinding step: after firing, the edges of the pan or pot can have rough, excess enamel that can chip or scratch countertops, so we grind the rim smooth using a diamond wheel, then buff it to a clean finish.
The final quality check is the most rigorous. Every piece goes through a drop test: we drop a 1-kilogram weight from 1 meter onto the edge of the pan to ensure the enamel doesn’t chip. We also do a heat test: we heat the piece to 260 degrees Celsius for an hour, then quench it in cold water to make sure the enamel doesn’t crack or peel from thermal shock. For interior non-stick surfaces, we run a scratch test with a metal spatula to ensure it holds up to regular use. Only the pieces that pass all these tests make it to our warehouse, ready to be shipped to customers.
A lot of people ask us if enamel cookware is worth the investment, and the answer is yes—if it’s made properly. Unlike non-stick pans that need replacing every 1 to 2 years, a good enamel piece can last for decades, even with daily use. The enamel is non-reactive, so it doesn’t leach chemicals into acidic foods like tomatoes or citrus, and it’s easy to clean—just soak with warm water and a soft sponge, no harsh scrubbing required. It’s also versatile: you can sear on the stovetop, bake in the oven, and even serve directly at the table, making it a staple in kitchens around the world.
As someone who’s been in this industry for years, I’ve seen too many suppliers cut corners to lower costs: skipping the degreasing step, thinning the enamel layers to reduce material use, or using lower-quality minerals that fade or chip easily. For us, that’s not an option. Our craft is built on making pieces that families can pass down, and that means every step, no matter how time-consuming, is done right. If you’re a restaurant owner, a retail buyer, or a brand looking to add high-quality enamel cookware to your product line, I’d love to chat. Whether you have questions about minimum order quantities, custom color options, or bulk pricing, we’re here to help you find the right pieces for your needs. Just reach out to our team to start a conversation.
Glass Lined Coffee Carafe References
Enamel Technology: Principles and Applications
Food-Grade Enamel Coatings: Safety and Performance Standards
Manufacturing Processes for Enameled Steel Cookware
Thermal Shock Resistance of Enamel Coatings for Kitchen Appliances
Kairun International Co., Ltd.
With abundant experience, we are one of the most professional enamel cookware suppliers in China. Please feel free to wholesale customized enamel cookware made in China here from our factory. For more cheap products, contact us now.
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