Steel Billet · Size
130×130 mm Steel Billet
Treat 130×130 mm as the nominal square cross-section, then agree side limits, corner geometry, straightness and length with the receiving mill. A larger section changes the charge plan, so confirm the envelope before ordering.
Nominal square size does not establish actual area, grade, stock availability or a universal tolerance. Rounded corners and actual dimensions affect mass.
State these before the order
- The agreed upper and lower side limits, and where they are measured.
- The corner geometry and shape limits, not assumed sharp corners.
- The straightness limits that apply to the delivered length.
- The usable cut length and the receiving-equipment envelope.
- The grade and quality plan released on a separate schedule.
Qualify the charge
Decide whether this is the right billet route
The charge section decides what the mill has to accept. Each row names the decision, why it matters at this stage, and what you must be able to state before the order is released.
| Decision | Why it matters here | Before you enquire |
|---|---|---|
| 130 mm charge required | Nominal size leaves shape variation open. | Attach the mill's complete receiving envelope. |
| Section change proposed | A larger section changes the charge plan and the pass. | Obtain mill approval before substitution. |
| Mass estimate needed | Ideal square geometry ignores corner and size variation. | Use agreed actual geometry and density. |
Explore the full steel-billet range
Compare 100×100 mm billet
A smaller charge section carries its own receiving limits and mass basis.
Review square-billet requirements
Resolve the full square-billet geometry and quality schedule.
Acceptance basis
Put the acceptance basis on the order
Nominal square size does not establish actual area, grade, stock availability or a universal tolerance. Rounded corners and actual dimensions affect mass. Each row names the applicability limit, the evidence to request and the action that closes it.
| Specification decision | Applicability and limit | Evidence to request | RFQ action |
|---|---|---|---|
| Side dimensions | 130 mm is nominal on each side. | Agreed upper/lower limits and measurement method. | Specify where and how each side is measured. |
| Shape and corners | Rhomboidity, corner form and straightness are separate controls. | Approved shape schedule and actual checks. | Agree limits rather than assuming sharp corners. |
| Length and mass | Usable length differs from unspecified cut length. | Cut-end schedule and agreed weighing basis. | State length limits and payable quantity basis. |
Acceptance controls
Make acceptance easier to demonstrate
Three controls carry the 130 mm charge decision. Each names the evidence to request and the action that closes it.
Side dimensions
Agreed upper/lower limits and measurement method.
Specify where and how each side is measured.
Shape and corners
Approved shape schedule and actual checks.
Agree limits rather than assuming sharp corners.
Charge compatibility
The receiving mill's approved envelope for this section.
Confirm the larger section clears the guides before ordering.
From specification to receipt
Close each decision before releasing the order
Four stages carry the order from engineering release to receipt. Each names the owner, the required input, the evidence produced and the risk if the item stays open.
| Stage and owner | Required input | Evidence or output | Risk and next action |
|---|---|---|---|
| Engineering release — Buyer's design authority | Mill releases the complete 130 mm charge envelope. | Approved specification and drawing revision | Unapproved substitution can change the design basis. Close the item before proceeding. |
| Offer review — Buyer and quotation team | Buyer agrees geometry, usable length and mass basis. | Written technical exceptions and commercial scope | An unlisted exception can survive into the purchase order. Close the item before proceeding. |
| Material release — Mill, inspector and buyer as agreed | Inspector records dimensions against the approved schedule. | Accepted documents linked to the order items | Missing heat identity can make an otherwise correct billet unacceptable. Close the item before proceeding. |
| Receipt and reconciliation — Receiving team | Receiver reconciles pieces, heat identity and weighed delivery. | Delivery record, item count and discrepancy record | Record any mismatch before the material is incorporated into work. Close the item before proceeding. |
Questions before ordering
Questions before you place the billet order
Four questions that decide whether a 130×130 mm offer is comparable.
Is 130×130 mm interchangeable with 100×100 mm?
No. A larger charge section needs receiving-mill approval.
Does the nominal size set the tolerance?
No. Agree the applicable side, shape and straightness limits.
Can a mass be invoiced from nominal geometry?
No. Actual geometry, length and agreed density govern any estimate.
Does the size select a grade?
No. The grade is released on a separate schedule.
Enquiry handoff
Turn this requirement into a reviewable enquiry
Approve the full 130×130 mm billet envelope and measured-mass basis before order release.
Send the agreed section, side limits, shape schedule and usable length so exceptions can be returned against the right requirement. Price, availability and dates require written confirmation.