Sino Steel supplies deformed reinforcing steel for concrete projects where standard, grade, nominal diameter, rib geometry, bar form, mechanical properties, bundle traceability and export delivery must be confirmed together. As a TMT rebar manufacturer and supplier, we route each RFQ to the applicable rebar standard instead of treating “TMT” as a complete grade specification.
TMT describes a thermomechanical processing concept used in reinforcing steel production. A workable purchase order still needs a recognized product standard, grade, nominal diameter, bar length or coil form, quantity and required inspection or documentation.
Start from the specification required by the project, market or design document.
Confirm the grade within that standard rather than using “TMT” as the strength designation.
Order by the standard-defined nominal bar size, with rib geometry and mass checked by the applicable method.
Confirm straight length, coil or decoiled form where the selected standard and diameter route permit it.
The manufacturer still needs to know which standard and grade define the steel, rib pattern, mass, mechanical performance and acceptance requirements.
Different markets define grade names, nominal sizes, rib geometry, mass and mechanical acceptance differently. This page provides the purchasing route; the dedicated standard pages will hold detailed grade requirements.
Hot-rolled ribbed steel for concrete reinforcement. Use the current project-required HRB grade and nominal size rather than assuming every TMT order is an HRB order.
View HRB400 / HRB500 →Deformed and plain carbon-steel bars for concrete reinforcement. The dedicated page will handle ASTM bar-number, grade, mass and mechanical-property requirements.
View ASTM A615 Rebar →Weldable ribbed reinforcing steel supplied in bar, coil or decoiled forms within the standard's defined requirements.
View BS 4449 Rebar →HRB, ASTM and BS designations belong to different standard systems. Quote and inspect the order against the standard actually specified.
A deformed bar has a steel body plus transverse and longitudinal ribs. A caliper reading taken across the highest ribs is not automatically the nominal diameter used for ordering or mass calculations.
The standard-defined bar size used for designation, reference mass and dimensional requirements.
Rib height, spacing, angle and pattern should follow the applicable standard or approved product specification.
Where present, these are part of the deformation geometry and should not be confused with a simple round-bar diameter.
Mass checks provide a second control on bar size and delivered material beyond a single external caliper reading.
Rebar orders are often checked from nominal size and reference mass per metre, while shipping and commercial settlement may also use actual bundle or shipment weight. Keep these purposes separate.
Use the applicable standard and nominal size as the reference basis rather than a generic internet weight table.
For a mass check, use a controlled sample length and the procedure required by the applicable standard or inspection plan.
Actual bundle weight supports shipment planning, lifting, loading and quantity reconciliation.
Confirm whether the contract settles by theoretical mass, actual weight, piece count or another agreed commercial basis.
Straight bars, coils and decoiled reinforcement do not follow the same handling route. The selected standard, bar size and downstream processing determine which form is appropriate.
Confirm finished bar length, length tolerance, bundle separation and project cutting requirement.
Where the standard and product route permit coils, confirm coil identity, coil handling and downstream straightening requirements.
Straightening a coil creates a downstream geometry-control step, so straightness and surface condition should be reviewed on the finished product.
Bar, coil and decoiled product should remain clearly identified on the order, tags and inspection records.
The required mechanical properties depend on the selected rebar standard and grade. The TMT factory review should keep yield behavior, tensile strength, elongation and bend-related acceptance tied to that standard rather than publishing one universal performance table.
| Property | What It Tells the Buyer | How to Use It |
|---|---|---|
| Yield Strength | The stress level associated with yielding under the applicable test method. | Compare against the minimum or characteristic requirement defined by the selected grade. |
| Tensile Strength | The maximum tensile stress reached during the tensile test. | Review with yield behavior and the standard's grade-specific acceptance criteria. |
| Elongation / Ductility | The deformation capacity measured by the method required by the selected standard. | Do not compare elongation values from different test bases as if they were identical. |
| Bend / Rebend | Checks whether the bar can tolerate the specified deformation without unacceptable failure. | Use the mandrel, angle, conditioning and acceptance criteria required by the applicable standard. |
This page keeps the purchasing logic clear without mixing mechanical-property tables from different standard systems.
A bar can have an acceptable rib appearance and still fail a mechanical requirement, or meet tensile requirements while its finished geometry, length or bundle identity is wrong. Final inspection should separate these checks.
Review nominal size, rib geometry and the dimensional method required by the selected standard.
Use a controlled sample and applicable standard method rather than only a rib-to-rib caliper reading.
Review yield, tensile and elongation results against the actual standard and grade on the order.
Use the specified mandrel, angle and acceptance route where bend or rebend testing is required.
Straight-bar orders are easier to verify when the specified length, quantity, bundle separation and actual tags all point to the same grade and diameter.
Measure the delivered bar length against the order and applicable tolerance rather than relying only on nominal stock length.
Use piece count where required for project allocation, bundle planning or theoretical mass reconciliation.
Different product identities should remain physically separated instead of being combined into one visually similar bundle.
The tag should identify the delivered bundle in a way that can be reconciled with the inspection and mill documents.
A mill test certificate is useful only when the delivered bundle can be linked back to the correct heat or production lot, grade, nominal diameter and product form.
If the material is processed after rolling, the finished bundle still needs to remain linked to the original material identity and the new processing record.
Raw rebar supply remains the primary route. When the buyer orders cutting, straightening from coil or bending, those operations create new dimensions and geometry that the original MTC does not prove.
Confirm the finished length, quantity and cut condition after processing.
Where applicable, inspect the finished straightness and surface condition after the coil is processed.
Only use a confirmed bar schedule or drawing when factory bending is part of the ordered scope.
New cut or bent bundles should retain the source heat / lot and grade identity together with the processing reference.
Export packing should keep bars aligned, grades and diameters separated, tags protected and long bundles supported without one-point bending during lifting or loading.
Use several appropriately spaced restraints along the bundle length instead of relying on one or two concentrated bands.
Tags and document references should remain readable and physically attached through warehouse and loading operations.
Long bundles should rest on several level supports and use a lifting route that avoids excessive sagging or permanent bending.
Check grade, diameter, bundle count and shipment documents against the actual cargo before release.
For projects using Chinese hot-rolled ribbed bar grade designations under the specified GB route.
View HRB Rebar →For concrete reinforcement orders using ASTM bar sizes, grades and acceptance requirements.
View ASTM A615 →For weldable ribbed reinforcement supplied to the specified BS 4449 project route.
View BS 4449 →For factory-welded reinforcement where bar / wire size, spacing, sheet dimensions and weld quality define the finished product.
View Rebar Mesh →No. TMT is a thermomechanical processing description, not a complete grade specification. The purchase order should still identify the applicable rebar standard, grade, nominal diameter, delivery form and required tests.
Use the nominal size and dimensional method defined by the applicable rebar standard. A single caliper reading across the highest rib peaks should not automatically be treated as the nominal diameter.
Theoretical mass is calculated from the standard-defined reference mass and ordered dimensions. Actual bundle weight is the measured shipment weight used for loading, reconciliation or commercial settlement where the contract requires it.
The available delivery form depends on the selected standard, nominal size and manufacturing route. Straight bars, coils and decoiled products should be specified and inspected as distinct delivery forms.
The exact document package follows the order, but buyers commonly request the MTC together with bundle identification and relevant inspection records. The bundle tag should reconcile with the actual grade, size and material lot.
Cutting, straightening and bending can be discussed when included in the ordered scope. These operations create new finished dimensions that should be checked against the confirmed bar schedule, drawing or project requirement.
Standard, grade, nominal diameter, bar length or coil form, quantity and destination are enough to start. Add mechanical requirements, bundle weight, cutting / bending scope, tag, MTC or packing requirements where the project controls them.
