Glass Furnace Construction
from Zwiesel
for the production of various glass types
When you read Zwiesel, you often have a glass in your hand. Zwiesel is known worldwide for its high-quality glass production. Therefore, it's no wonder that IWG Glasofenbau has its company headquarters in the glassy heart of the Bavarian Forest. Tradition and the latest technical developments in glass furnace construction have been cultivated and advanced here for five generations by the Wagenbauer family.
IWG Glasofenbau is a world-leading company in the field of glass furnaces, glass melting tanks, day tanks, and pot furnaces for glass production. From Zwiesel, systems for glass production are delivered and installed worldwide.
Management // IWG Glass Furnace Construction
Employees working for you worldwide
international projects
times a year represented at international trade fairs
IWG Glass Furnace Construction
Custom Glass Furnace Construction
Glass Melting Furnaces
Our industrial glass furnaces are designed precisely for your application: temperature control, atmosphere, geometry, charging concept – everything is perfectly tailored to your production line and your type of glass. This keeps your process stable, efficient, and reproducible.
Glass Conditioning
In glass conditioning, precision determines quality. Our components – from heated channels and control zones to measurement and control technology – keep temperature and viscosity within the target range, smooth out flows, and minimize air inclusions.
Glass Type
Whether borosilicate, E-glass, C-glass, or special glass: We build the melting, conditioning, and feeding technology to match your glass type.
You receive a system that is precisely designed for your recipe, viscosity, temperature window, and process stability.
Glass Types
Glass Melting Furnace
Glass Conditioning
Equipment
some like it hot
IWG Glass Furnace Construction from Zwiesel
About us
Get to know IWG: who we are and how we work. Discover our history, values, and the team behind them.
Learn why customers worldwide rely on our furnace expertise.
Career
Do you like it hot? How about a job on our team? Discover exciting career opportunities – from innovative melting furnace technology and quality assurance to logistics.
News // IWG
Stay up to date on furnace projects, energy efficiency upgrades, and worldwide commissioning. Find trade fair announcements as well as insights into development and service in the glass industry.
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. We are driven by the question of how to simultaneously improve melting quality, efficiency, and safety – in new constructions as well as in retrofits. That's why we think in life cycles: from design, operation, data analysis, and service to the next upgrade.
What Drives Us
- Custom work instead of standard: Each furnace is tailored to raw materials, recipes, and cycle times.
- Energy & emissions under control: Modern burner technology, heat recovery, oxy/hybrid concepts, and smart control.
- Melt quality first: Flow guidance, combustion chamber geometry, and refractory selection for a homogeneous, low-bubble melt.
- 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.
- In partnership: A team of engineering, assembly, and service that listens, thinks along, and takes responsibility.
Do you have questions?
We are here for you!Do you have questions?
Individual consulting and planning up to turn-key projects