Standard & grade stated per product
Each product shows the grade and standard it is offered to, once confirmed for that product.
Quality · Compliance
Quality starts with the specification.
How we review your requirement, which quality documents you can expect with an order, and where compliance information comes from — stated plainly, without claims we cannot document.
Our quality approach
- 01
Specification first
Grade, standard, dimensions and tolerances are checked against your requirement before we quote.
- 02
Documented supply
Quality documents issued by the manufacturer are passed on with the order, where supplied.
- 03
No surprises
Any difference between your request and what can be supplied is raised before order confirmation.
- 04
Honest attribution
Manufacturer data stays attributed to the manufacturer — never presented as our own.
How it works
From requirement to documents in your hands.
Quality information follows the order — from the specification you send to the documents that travel with the shipment.
- 01
Your requirement
Grade, standard, dimensions and the quality documents you need.
- 02
Specification review
We confirm what can be supplied against your requirement.
- 03
Order confirmation
Agreed specification and required documents are written into the order.
- 04
Document check
Manufacturer documents are checked against the agreed specification.
- 05
Shipment documents
Quality and export documents are sent with the shipment.
Mill test certificate
Know what a test certificate tells you.
A mill test certificate links the material you receive to the manufacturer's test results. It is issued by the manufacturer per coil or batch, and is available on request where supplied.
- AIdentificationCertificate number, product, grade, coil or heat number.
- BDimensionsThickness, width, coil inside diameter and weight.
- CPropertiesTest results — e.g. core loss and induction for electrical steel, mechanical properties for others.
- DTest basisThe standard the tests were carried out to.
Sample layoutMill test certificate
SAMPLESample layout · reference data (Baosteel GO manual) · approval required
- Certificate no.
- —
- Product
- GO electrical steel coil
- Grade
- B27R090
- Coil no.
- —
A · BDimensions
| Thickness (mm) | Width (mm) | ID (mm) | Tolerance (mm) |
|---|---|---|---|
| 0.27 | 900–1200 | 508 | ± 0.03 |
CMagnetic & mechanical properties
| Property | Value | Basis |
|---|---|---|
| Core loss P1.7/50 (W/kg) | ≤ 0.90 | Guaranteed max |
| Induction B8 (T) | ≥ 1.87 | Guaranteed min |
| Tensile strength (MPa) | 358 | Typical* |
| Yield strength (MPa) | 333 | Typical* |
| Elongation (%) | 12 | Typical* |
| Hardness (HV1) | 204 | Typical* |
| Lamination factor (%) | 97.0 | Typical* |
* Typical values are reference only and not guaranteed.
DTest basis: GB/T 13789-2008 (R grades)
Quality documents
Documents you can request with an order.
List the documents you need in your quotation request. Availability depends on the product and manufacturer and is confirmed in the quotation.
| Document | What it shows | Issued by | Availability |
|---|---|---|---|
| Mill test certificate / material test report | Test results for the supplied coil or batch | Manufacturer | On requestwhere supplied by the manufacturer |
| Inspection certificate | Results of inspection against the agreed specification | Manufacturer or inspection body | On request |
| Certificate of origin | Country of origin of the goods | Issuing authority | On requestwhere required for import |
| Packing list & labels | Coil or bundle IDs, weights and marking | Supplier | With each shipment |
| Material declarations | Composition or hazardous-substance statements | Manufacturer | On requestwhere supplied by the manufacturer |
| Third-party inspection | Independent inspection before shipment | Inspection body chosen with the buyer | On request |
Company certificates
Certificates & registrations.
Company certificates will be shown here once supplied and verified. We do not display certificates we cannot document.
- Certificate placeholder — to be supplied by client
Quality management certificate
- Issued by
- —
- Scope
- —
- Valid until
- —
- Certificate placeholder — to be supplied by client
Business registration
- Issued by
- —
- Registered name
- —
- Valid until
- —
- Certificate placeholder — to be supplied by client
Import / export registration
- Issued by
- —
- Number
- —
- Valid until
- —
Manufacturer and supplier certificates belong to the issuing company and are shown only with permission and attribution.
Standards & sources
Where our technical data comes from.
Every specification on this site carries its source. Standards are listed as the test or designation basis stated by the source — not as a compliance claim.
GB/T 3655-2008 · GB/T 13789-2008
Test basis stated in the Baosteel GO electrical steel manual used as sample reference data (G, P grades / R grades).
Baosteel GO manual · approval requiredYour standard, your tolerances
If you buy to a specific national or company standard, name it in your request and we review supply against it.
Documents for your order
Tell us which quality documents you need.
Add required certificates and test reports to your quotation request, or browse the technical library.