Clear technical information. Defined quality requirements.
Define the review points from material selection to approval, with an agreed supply and inspection scope for each product.
Integrated ISO management systems
These certifications apply to U1 Steel’s management systems. They do not automatically certify a particular material property or customer-specific qualification.
Environmental management
Occupational health & safety
Company profile lists certificate validity as 26 March 2026–25 March 2029. Request the current certificate when required.
Quality review checklist
| Review area | Items to agree |
|---|---|
| Material & standard | Grade, standard/edition, chemistry and customer-specific conditions |
| Dimensions & appearance | Dimensional tolerance, straightness, roundness, finish, cut ends and surface |
| Delivery condition | Heat treatment, hardness/structure, coating and machining allowance |
| Testing & inspection | Required tensile, hardness, structure, substances or NDT tests and acceptance criteria |
| Traceability & documents | Material lot/heat number, mill certificate, inspection results, labels and packing marks |
| Approval & change control | Sample approval, requested PPAP or other documents, maker/process change approval |
For test reports, third-party testing or PPAP requests, document availability, test provider, cost and timing are confirmed case by case; they are not included automatically for all products.
Turning R&D into process improvement.
Three integral-yoke bar manufacturing patents and a KOITA-recognized R&D department support continued material and process development.
9 → 7
CFQ Solid process reduction
A focused manufacturing route reduced from nine stages to seven. Suitability is reviewed against the customer’s part and downstream process.
Discuss forging material requirementsTell us which quality documents you need.
Request current ISO certificates or review the availability of product-specific mill certificates and test documents.
Ask about certificates & documents