Specialists in steel plate for industrial applications
Technical distribution of structural and special steel plates. Reliability, service, and technical expertise when there's no room for error.
A leading warehouse for special grades
In industrial projects, steel is not a commodity. The supplier makes the difference.
Mayor Steel positions itself as a specialized distributor and technical partner in steel plate, with deep knowledge of the grades, applications, limitations, and technical requirements of each type of plate.
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Product Lines
Steel plate solutions according to application and required performance level
Structural plate
S275 JR · S355 J2+N
Volume base for structures and industrial manufacturing.
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Heavy structural plate
S355 J2+N · K2+N · NL
Special thicknesses for demanding projects.
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High-yield-strength plate
S690 QL
High strength for heavy machinery, industrial vehicles, and lifting equipment.
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Wear-resistant plate
450 HB
For extreme environments: civil works, mining, forestry, and agricultural machinery.
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Pressure vessel plate
P265 GH · P355 GH
Critical material with the highest regulatory and documentation requirements. Guaranteed certification.
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CORTEN plate
S355 J2 W+N
Distinctive material for structural and architectural projects. Corrosion resistance.
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We work with industrial clients who can't afford to fail
Flame Cutting and Processing Centers
Agile and reliable supply for plate cutting and processing centers.
Boilermakers and Structural Fabricators
Certified material for the manufacture of metal structures and boilermaking.
Heavy Machinery Manufacturers
High-yield-strength steels for construction and mining equipment.
Industrial Vehicles and Special Equipment
Wear-resistant and structural plate for commercial vehicles and equipment.
Energy, Petrochemical and Capital Goods
Certified materials for pressure vessels and critical applications.
Wind Power Sector
Steel plate in stock that meets wind power sector regulations.
Why Mayor Steel?
Permanent stock
Wide availability of products with immediate delivery for your projects.
Technical specialization
We know the grades, applications, and limits of the material we supply.
Reliability and compliance
Lead times, quality, and documentation. No surprises in your projects.
Service and responsiveness
Commercial and operational agility in an increasingly demanding market.
Cost competitiveness
Highly competitive pricing on industrial steel plate in stock.
Thickness range
Industrial steel plate from 6 to 250 mm.
How we work
A process designed to reduce risk and ensure results
Benefits of working with us
Discuss my project
Let's discuss your project
Tell us what you need and we'll guide you with no obligation. Our technical team is at your disposal.
48508 Zierbena, Bizkaia
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Offices and central warehouse - Spain
Refradigas Street 4, Unit 2
48508 Zierbena, Bizkaia, Spain
France Delegation
Warehouse Portugal
Rua das Telheiras, nº 80
4760 – 564 Fradelos (V. N. Famalicão), Portugal