Reviewed technical and procurement guidance · 10 August 2026

DX51D+Z Galvanized Steel Coil

Procurement page for EN 10346 DX51D+Z galvanized coil, covering zinc coating mass, thickness basis, surface, passivation, spangle, forming, inspection and coil packing.

03Grade-product

Specifications and dimensions

State base-metal or coated thickness basis, width, tolerance, coil inside diameter, outside diameter and maximum coil mass.
State edge, camber, flatness, surface quality, spangle, skin pass, passivation, oiling and protective film.

Standards and supply condition

EN 10346:2015 DX51D+Z material and coating system
EN 10143 dimensional and shape tolerances where ordered

Manufacturing and processing

Steel strip is cleaned, annealed and continuously hot-dip zinc coated before controlled wiping, cooling and finishing.
Skin passing, tension leveling, passivation, oiling, slitting and recoiling are selected for forming and storage requirements.

Typical applications

Roll-formed building and appliance components
Ductwork, enclosures and general fabricated sheet
Prepainted substrate when paint-system compatibility is qualified

Quality and acceptance controls

Match substrate designation, coating symbol/mass, coil identity, dimensions and ordered standard to the certificate.
Verify coating mass, adhesion, surface, thickness, width, flatness, camber and forming compatibility.
Confirm passivation or chromate-free treatment, oil, paint/adhesive compatibility, marking and moisture-protected packing.

Include in your RFQ

Exact designation and governing product-standard edition
Product form, dimensions, tolerances and quantity
Delivery condition, temper, coating or surface treatment
Service environment, fabrication route and applicable design code
Testing, inspection, certificate and traceability requirements
Packing, marking, destination and required delivery date

Selection limits

DX51D+Z, SGCC and ASTM A653 commercial-steel designations use different standards and are not automatic equivalents.
Coating mass, atmosphere, cut edges, forming damage and maintenance control corrosion life; the grade name alone does not.

10 August 2026

Sources and technical review

BS EN 10346 - Continuously Hot-Dip Coated Steel Flat Products for Cold Forming

British Standards Institution · BS EN 10346:2015, current

Metallic-Coated Steel Standards and Reference Materials

International Zinc Association / GalvInfo Center · Technical reference collection

Independent grade guide

DX51D+Z

Review chemistry, properties, corrosion behavior, and material-selection context for this grade.

Independent grade guide →

RFQ support

DX51D+Z Galvanized Steel Coil

Procurement page for EN 10346 DX51D+Z galvanized coil, covering zinc coating mass, thickness basis, surface, passivation, spangle, forming, inspection and coil packing.

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