11
2025
-
11
How to Properly Cut and Drill Galvanized Steel Without Damaging the Coating
Understand the Importance of the Coating
Before grabbing your tools, it’s good to remember why the zinc coating matters. It’s not just a shiny finish — it’s the steel’s armor against rust and corrosion. Damaging it during cutting or drilling is like chipping the paint off your car — sooner or later, rust will find its way in. So, keeping that layer intact is key to long-term durability.
Use the Right Tools for the Job
When cutting galvanized steel, go for sharp, high-quality blades or saws designed for metal. For drilling, use cobalt or titanium-coated bits — they handle the hardness of the steel and minimize friction that could overheat and damage the zinc layer. A little cutting oil also goes a long way in keeping things cool and clean.
Cut and Drill at Controlled Speeds
Slow and steady wins this race. High-speed cutting or drilling can burn off the zinc, leaving bare spots. Instead, use moderate speed and light pressure. This helps maintain a clean edge and keeps the coating from peeling.
Protect the Edges After Cutting
Even when you’re careful, exposed edges are inevitable. That’s why it’s smart to seal them with zinc-rich paint or cold galvanizing spray afterward. It restores the protection and keeps rust at bay.
In Dongte Metal, we have galvanized steel coil, galvanized steel plate, galvanized steel pipe.
CONTACT
Tel : +86 18053180867
WhatsApp : +86 18053180867
Wechat : +86 18053180867
Email : sales07@zgdtsteel.com
All Rights Reserved © 2023 Dongte (China) Metal Products Sales Co., LTD. SEO
