For over 55 years, D&N Engineering has designed and manufactured high-quality equipment for the aluminium smelting industry. Our peep hole covers are built to perform — combining durable materials, precision manufacturing, and a repairable design that delivers longer service life and lower maintenance costs over time.
At D&N Engineering, quality isn’t just a promise — it’s the standard we build every product around.
Each peep hole cover we design is built to withstand the harsh, high-temperature conditions of aluminium smelting, using premium materials that deliver the durability our customers depend on.
As a family-owned and operated business with over 55 years of experience, we take a hands-on approach with every customer as we will work closely with you to make sure the final product matches exactly what you need. Every item passes through a rigorous quality-checking process, from the initial design stage right through to final inspection. You can trust that what leaves our workshop is built to last.
At the end of the day, our goal is simple: a satisfied customer and a product you can rely on.
✓ Family Owned & Operated
✓ Australian Manufactured
✓ Designed for Aluminium Smelters
✓ Custom Built Solutions
✓ Premium Quality Materials
✓ Precision Engineering
✓ Experienced Manufacturing Team
✓ Tailored to Your Requirements
✓ Trusted Industry Expertise
Radius of Can
