Product reference photographs. Confirm grade, finish and supply specification with your enquiry.
Hot rolled plate & coil
Q235B hot rolled steel plate
Q235B plate enquiries for general steel fabrication. Specify the applicable standard edition, dimensions, edge requirements and quantity.
- Product form
- Plate
- Surface / finish
- Hot rolled
- Grade / standard
- Q235B · GB/T 700-2006
Product details
Q235B plate enquiries for general steel fabrication. Specify the applicable standard edition, dimensions, edge requirements and quantity.
This specification is available for enquiry. Supply scope, dimensions and lead time must be confirmed with our team before ordering.
Cutting & fabrication
Specify the final plate size and downstream cutting or welding process.
Thickness & flatness
Define nominal thickness and the tolerances your fabrication requires.
Material documentation
Match the requested material standard with the inspection document.
Typical application
Structural fabrication
Structural fabrication, equipment and general plate work.
Explore applicationsProduct specifications
| Product form | Plate |
|---|---|
| Grade / standard | Q235B · GB/T 700-2006 |
| Thickness | 1.5–200 mm |
| Width | 600–4,000 mm |
| Manufacturing process | Hot rolled |
| Surface | As-rolled steel surface with oxide scale |
| Cut length | 1,000–12,000 mm; custom cut lengths by agreement |
| Dimensional tolerances | To the agreed grade, standard and order specification |
| Order quantity & availability | Confirmed for the selected specification in the quotation |
| Edge condition | Mill edge or trimmed edge, confirmed with the order |
| Inspection document | Request heat / coil identification and material test results |
| Packaging | Moisture protection, steel strapping and agreed edge protection |
| Dispatch documents | Packing list and product identification matched to the order |
| Delivery condition | As rolled; normalized or other grade-permitted condition when specified |
Ranges vary with grade, finish and order specification. Confirm the required dimensions, coating and availability in your quotation.
Q235B — chemical composition (heat analysis)
| C max. % | Si max. % | Mn max. % | P max. % | S max. % |
|---|---|---|---|---|
| 0.20 | 0.35 | 1.40 | 0.045 | 0.045 |
GB/T 700-2006, as reproduced in the PolyU Chinese Steel Guide, Appendix C. Carbon up to 0.22% is permitted only by agreement with the purchaser.
Q235B — mechanical properties by plate thickness
| Thickness t (mm) | Yield ReH min. (MPa) | Tensile Rm (MPa) | Elongation A min. (%) |
|---|---|---|---|
| ≤16 | 235 | 370–500 | 26 |
| >16–40 | 225 | 370–500 | 26 |
| >40–60 | 215 | 370–500 | 25 |
| >60–100 | 215 | 370–500 | 24 |
| >100–150 | 195 | 350–500 | 22 |
| >150–200 | 185 | 350–500 | 21 |
GB/T 700-2006. For thickness over 100 mm, the lower tensile limit may be reduced by 20 MPa. For wide strip and plate cut from it, the tensile upper limit is not an acceptance requirement. Use the test piece and orientation required by the ordered standard.
Q235B — impact and delivery condition
| Item | Requirement |
|---|---|
| Quality class | B |
| Charpy V-notch test temperature | +20°C |
| Impact energy | 27 J minimum, standard test basis |
| Thin material exception | For thickness <25 mm, omission of impact testing requires the supplier guarantee and purchaser agreement allowed by the standard |
| Delivery | Hot rolled; controlled rolling or normalized delivery where specified in the order |
The impact requirement is specific to Q235B; do not substitute values from Q235A, Q235C or Q235D.
Q235B — 180° cold-bend requirements
| Thickness a (mm) | Longitudinal mandrel diameter d | Transverse mandrel diameter d |
|---|---|---|
| ≤60 | 1.0a | 1.5a |
| >60–100 | 2.0a | 2.5a |
| >100 | By agreement | By agreement |
a is specimen thickness; bend specimen width is 2a. Test requirements and sampling follow GB/T 700-2006.
Surface & processing requirements
Include the downstream process in your enquiry so that the material, dimensions and surface can be reviewed together.
| Cut-to-size requirements | Final length and width, cutting method and edge condition. |
|---|---|
| Forming / fabrication | Describe the downstream forming, pressing, profiling or fabrication operation. |
| Finishing requirements | State whether material will be painted, coated or otherwise finished after delivery. |
| Plate / sheet handling | Confirm lifting method, stack height and protection of edges and surfaces. |
Production & processing
Define the material and the downstream process together. Cutting, slitting or finishing requirements should form part of the order specification.
Material review
Grade, dimensions and surface requirements are checked against the enquiry.
Processing scope
Agree cutting, slitting or forming requirements and the finished product tolerances.
Order inspection
Define acceptance criteria, identification and the requested documentation.
Stock & warehouse
Hot rolled, galvanized and color coated material in warehouse settings. Ask our team to confirm current availability for your grade, dimensions and quantity.
Quality inspection & documentation
Agree the acceptance criteria and required documents before confirming your order.
- Material identificationGrade, standard and requested test documentation.
- Dimensions & surfaceThickness, width, finish and agreed tolerances.
- Order documentsProduct identification, packing list and inspection scope.
Packaging & shipment
Tell us how the material will be transported, unloaded and stored. Specify moisture protection, edge protection, package weight and destination with your enquiry.
| Protection | Moisture barrier, edge protection and surface protection as agreed. |
|---|---|
| Unit weight | Specify the coil or bundle weight for your unloading equipment. |
| Identification | Product, grade, dimensions and order reference on the agreed packing list. |
| Delivery | Confirm destination, transport method and delivery terms in the quotation. |
Certificates & verification documents
Request the original document issued for the supplying company, product scope and order. Material test reports and conformity documents are checked against the named holder, issuing body and validity period.
| Material test report | Heat or coil number, ordered grade, chemical composition and mechanical test results. |
|---|---|
| Inspection document | Specify the required EN 10204 document type and inspection scope in the enquiry. |
| Conformity documents | Request an original copy showing the issuing body, holder, number, applicable scope and validity. |
Frequently asked questions
What should I include in my enquiry?
Send the product, grade or standard, dimensions, quantity, required finish and destination. Describe the end use if the specification is still being developed.
Can I request a particular size or finish?
Yes, include your required size and finish in the enquiry. Availability and any processing requirements must be confirmed in the quotation.
How are minimum order and lead time confirmed?
They depend on grade, dimensions, processing and quantity. We confirm them for the particular order rather than publish one figure for every product.
What documents should I request?
State the material test document, inspection scope and other purchasing documents required for your project. Agree these with the order.
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