The "First Plate" has left our new multifunctional quench!

With the successful heat treatment of the first plate a decisive milestone for the "New Heat Treatment Line" has been reached.

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A Traditional Company in the Harz Region

With a broad product range, the Ilsenburger Grobblech GmbH is one of the leading heavy plate mills in Europe.


With over 350 different steel grades with thicknesses ranging from 5 to 175 millimeters, we produce high-quality heavy plates for broadly diversified applications. 


Start your career with Ilsenburger Grobblech and become part of our great Team. 

Achieving Visions

Being successful together. The individual wishes of our customers motivate us every day to deliver top performance. Trust our many years of experience and let us together make visions become reality.


BRINAR Protect - Sicherheitsstähle der Ilsenburger Grobblech GmbH

BRINAR® Protect


Our high-strength armoured steels BRINAR® Protect 02 and BRINAR® Protect 05 guarantee an increased resistance to ballistic impacts. The product brochures are available here.

ILG New Heat Treatment Line - First Plate

First Plate


It's time - The "First Plate" has left our new multifunctional quench!

Offshore Projekt

Heavy Plates from the Salzgitter-Group for a wind farm off the coast of Brittany


Ilsenburger Grobblech GmbH and Salzgitter Mannesmann Grobblech GmbH are delivering 50,000 t of thermomechanically rolled steel plates for the offshore wind project “Saint-Brieuc” off the French coast.

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“New Heat Treatment Line” Project

Largest Investment in the history of the company