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SIAG – Experience in Steel

SIAG Schaaf Industrie AG has developed from a classical steel construction company to a leading supplier for the power generation industry. With production sites in Germany, the Czech Republic, France, Poland, Egypt and the USA and over 2,000 staff, SIAG is committed to grow together with our customers, and to offer the highest quality and maximum delivery reliability across the globe.

Our business units

Wind Energy Technologie OnshoreMaritime Systems / OffshoreEnvironmental and Energy TechnologyMechanical Engineering


The SIAG group is active in tower construction and mechanical engineering for wind energy technology as well as in high-tech steel construction. Advanced production lines and our expert staff who receive ongoing training help us to be a hallmark for the highest possible quality and delivery reliability worldwide.
To learn more about SIAG products, simply click on a business unit.


Welcome to SIAG!