Glass Furnace Construction
from Zwiesel –
for Every Type of Glass
When you hear the name Zwiesel, chances are there's a glass nearby. The town is renowned worldwide for its high-quality glass production – making it the natural home for IWG Glasofenbau, located in the glass-making heart of the Bavarian Forest. For five generations, the Wagenbauer family has combined tradition with cutting-edge innovation in glass furnace construction.
IWG Glasofenbau is a global leader in glass furnaces, melting tanks, day tanks, and pot furnaces. From Zwiesel, we design, deliver, and install glass production systems worldwide.
Management // IWG Glasofenbau
Employees work for you worldwide
international projects
times a year represented at international trade fairs
IWG Glasofenbau
Custom Glass Furnace Construction
Glass Melting Furnaces
Our industrial glass furnaces are precisely designed for your application: temperature control, atmosphere, geometry, and charging concept – all tailored to your production line and glass type. Stable, efficient, and reproducible.
Glass Conditioning
In glass conditioning, precision determines quality. Our components – from heated channels to control zones to measurement and control technology – keep temperature and viscosity on target and minimize air inclusions.
Type of Glass
Whether borosilicate, E-glass, C-glass, or special glass: We build the melting, conditioning, and feeding technology to match your glass type. Precisely designed for your recipe, viscosity, and process stability.
Types of Glass
Glass Melting Furnace
Glass Conditioning
Equipment
Some Like it Hot
IWG Glass Furnace Construction – Made in Zwiesel
About us
Get to know IWG: who we are and how we work. Discover our history, values, and the team behind it. Find out why customers worldwide rely on our furnace expertise.
Career
Do you like it hot? Join our team at IWG Glasofenbau! We offer exciting roles – from melting furnace engineering to quality assurance and international projects.
News // IWG
Stay informed about new furnace projects, energy upgrades, and commissioning worldwide. Find trade fair dates, development insights, and service updates.
Why we like it hot
Glass Furnace Construction for Industry
We build glass furnaces for an industry in transition: less energy per ton of glass, lower emissions, higher availability. What drives us is a simple question: how can melting quality, efficiency, and safety all improve at once – in new builds as well as in retrofits? That's why we think in life cycles: from design to operation, data analysis, and service, all the way to the next upgrade.
What drives us
- Custom-built, not off-the-shelf: Every furnace is tailored to your raw materials, recipes, and cycle times.
- Energy & emissions under control: Modern burner technology, heat recovery, oxy-/hybrid concepts, and smart controls.
- Melt quality first: Flow guidance, combustion chamber geometry, and refractory selection for homogeneous, bubble-free melts.
- Availability & TCO: Robust construction, maintenance-friendly details, fast spare parts – focused on total cost of ownership.
- Digital & transparent: Process data, KPIs, and predictive approaches for stable processes and clear decisions.
- Partnership-based: A team of engineers, assemblers, and service specialists that listens, collaborates, and takes responsibility.
Do you have questions?
We are here for you!Do you have questions?
Individual consultation and planning up to turn-key projects