WHAT WE SUPPLY
Marine plate and sheet, supplied mill-direct — 5xxx series with DNV-witnessed MTC.
A marine plate and sheet supplier built around one decision: every shipment leaves the producing mill with EN 10204 3.1 mill certificate, and every batch we sell under DNV coverage is witnessed by the surveyor’s stamp on the MTC. The rest — grades, sizes, tolerances, packing — sits underneath that promise.
Five grades, marine tempers only — what we hold in stock
We supply 5xxx series marine plate and sheet. The table below is the grade / temper / thickness range we keep in regular mill production, with mill-standard plate lengths and widths.
| Alloy | Form | Temper | Thickness | Mill-standard sizes (mm) | Typical marine use |
|---|---|---|---|---|---|
| 5083 | Plate + Sheet | H116H321H112 | 3–50 mm (plate) 1–8 mm (sheet) | 2000 × 6000 2500 × 8000 | Hull plating, decks, bulkheads, superstructures |
| 5086 | Plate | H116H321H111 | 3–25 mm | 2000 × 6000 | Hull plating, tank sides, lower decks |
| 5754 | Plate + Tread | H116H114 | 3–12 mm (plate) 1.5–6 mm base (tread) | 1500 × 3000 2000 × 6000 | Shipbuilding floors, superstructure inner panels, marine tread plate |
| 5052 | Sheet | H32H34 | 1.5–8 mm | 1000 × 2000 1220 × 2440 | Cabin interiors, consoles, light brackets, fuel-tank shields |
| 5059 | Plate | H116H321 | 3–50 mm | 2000 × 6000 2500 × 8000 | Hull plating for high-strength work boats and commercial craft |
From the producing mill to your forwarder
Every plate and sheet we ship comes from our partner rolling mills. Each piece carries the producing mill’s roll mark, heat number, and EN 10204 3.1 mill certificate.
DNV coverage for rolled-plate shipments
The producing mill is approved by DNV for the rolled-plate programme below. DNV-witnessed MTC means the surveyor stamps and signs the 3.1 certificate at the mill before the plate leaves.
DNV — held
Rolled plates in 5083 H116, thickness range 3–50 mm. Coverage shown on the certificate for each order.
Per-order issuance
DNV-witnessed MTC is issued per order, not pre-printed. The certificate carries the same heat number as the roll mark on each plate.
Mill-standard sizes that move on regular cycle
Mill-standard sizes mean the plate is rolling now, not queued behind a custom order. If your project fits these dimensions, lead time and MOQ stay at the standard level. Custom sizes are quoted case by case.
| Form | Thickness | Width | Length | Notes |
|---|---|---|---|---|
| Plate (5083 / 5086 / 5059) | 3–50 mm | 2000 / 2500 mm | 6000 / 8000 mm | DNV coverage applies to this programme |
| Sheet (5083 / 5052) | 1–8 mm | 1000 / 1220 / 1500 mm | 2000 / 2440 / 3000 mm | Mill-standard sheet sizes |
| Tread plate (5754 H114 / 5083 H32) | 1.5–6 mm base | 1500 / 1600 mm | 3000 / 6000 mm | 5-bar pattern, marine use |
Custom dimensions can be quoted — ask for a quote and we’ll confirm what’s possible against the producing mill’s production window.
Tolerances to EN 485-3:2003 — what the MTC numbers tie back to
Tolerances on thickness, width, length, flatness, and edge follow EN 485-3:2003 for the marine plate programme. The table shows the standard tolerance bands; tighter bands are available on request, subject to mill confirmation.
| Dimension | Range | EN 485-3 tolerance (standard) | Notes |
|---|---|---|---|
| Thickness | 3–6 mm | ± 0.20 mm | Plate, per piece |
| Thickness | 6–12 mm | ± 0.30 mm | Plate, per piece |
| Thickness | 12–50 mm | ± 0.40 mm | Plate, per piece |
| Width | 1000–2500 mm | + 5 mm / − 0 mm | Mill cut edge |
| Length | 2000–8000 mm | + 10 mm / − 0 mm | Mill cut length |
| Flatness | Plate | ≤ 0.4 % of width (standard) | Levelled at the mill |
| Edge | Plate | Mill edge (no further processing at DELIN) | Shipped as produced |
Independent verification before packing
The producing mill issues EN 10204 3.1 MTC. Our QC re-verifies the goods on our side — independent of the mill’s own inspection. This is the layer that catches mismarked plates, dimensional drift, and surface defects before they go in the box.
Thickness
Micrometer check on every plate / sheet — measurements tied to heat number for traceability against the MTC.
Surface & edges
Visual scan for scratches, dents, edge cracks, water staining. Photograph any piece that fails the line.
Markings
Roll mark, heat number, alloy / temper stamp — verified against the MTC before packing. Stencils re-applied where missing.
Packing inspection
Pallet / skid condition, steel strapping, edge guards, waterproof wrap — all checked before container loading.
Pre-shipment photo
Photo set per shipment (loaded container, markings, goods on pallet) — sent to the buyer for record.
Independent of mill QC
QC is separate from the producing mill’s inspection. Adds a verification layer on top of MTC.
Sea-freight packing — what survives the route
Packing for marine freight follows the producing mill’s export standard: wooden pallet / skid, steel strapping, edge guards, waterproof wrapping. Fumigation meets ISPM-15 for entry into most regulated ports.
| Element | Standard | Notes |
|---|---|---|
| Pallet / skid | ISPM-15 compliant | Heat-treated, stamped, no bark |
| Strapping | Steel band, ≥ 4 per pallet | Holds load during container handling |
| Edge guards | Cardboard / steel angle | Protects plate corners in transit |
| Waterproof wrap | PE film + desiccant | For long-voyage humidity control |
| Container | 20’GP ≈ 18–22 t typical load | 40’GP / 40’HQ also used for larger shipments |
| Markings | Stencil on each plate + label on pallet | Heat number / alloy / temper / size / contract no. |
MOQ · lead time · payment · Incoterms — the standard envelope
The numbers below are the standard order envelope for mill-direct plate and sheet. If a request sits at the edge of these numbers, ask — most cases can be worked out with the producing mill’s production window.
| Item | Standard | Notes |
|---|---|---|
| MOQ | 1 t (≈ 4 sheets of 8 × 2000 × 6000 mm) | Per alloy / per size |
| Lead time | 30–45 days from PO + deposit | Subject to mill rolling schedule |
| Payment | T/T 30% deposit, 70% before shipment · L/C at sight | Other terms considered for repeat buyers |
| Incoterms | FOB · CFR · CIF · DDP | Quoted against the destination port / site |
| Documents | MTC (3.1) · invoice · packing list · B/L · COO · CIQ | DNV MTC included for DNV orders |
One shipment, one document set
Every shipment leaves with a single document set — the same heat number on the MTC, the roll mark on the plate, and the line on the commercial invoice.
| Document | Issued by | Notes |
|---|---|---|
| EN 10204 3.1 MTC | Producing mill | Per heat · per shipment |
| DNV-witnessed MTC | Surveyor + mill | For orders under DNV coverage |
| Commercial invoice | DELIN | Per shipment |
| Packing list | DELIN | Per pallet / per container |
| Bill of Lading | Carrier | Per shipment |
| Certificate of Origin | Issuing chamber | Per shipment |
| CIQ / fumigation | As required by destination | Per shipment |
Send grade, size, and quantity — we’ll take it from there.
Clearer answers are faster. Anything you already know helps — alloy, temper, thickness, plate size, destination, Incoterm.
