CARBON STRUCTURAL BAR
Carbon Steel Flat Bar
A36, Q235B, Q355B and selected SAE grades for general steelwork and manufactured parts.
A36Q235BQ355B
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Global Steel Supply & Processing
Solid Rectangular Steel Bar | Hot Rolled & Cold Finished
Source solid flat steel bars for fabrication, brackets, equipment parts and stockholding. Share your material grade, bar width, thickness, length and quantity for an order-based quotation.
Explore steel grades and bar sizes ↓
Choose the material specified for your workpiece, welding plan or service conditions. Request the available section sizes and delivery state by grade.
A36, Q235B, Q355B and selected SAE grades for general steelwork and manufactured parts.
304 and 316L flat bars for equipment, fasteners, brackets and applications with corrosion requirements.
4140 and other alloy grades can be reviewed against your dimensions and heat-treatment requirements.
Send a single material schedule with each width × thickness combination and quantity.
Select the material standard first, then define the rectangular solid section, dimensional tolerances and order quantity.
| Product | Solid Flat Steel Bar / Rectangular Steel Bar |
| Section | Width × thickness, in millimetres |
| Carbon Steel Grades | ASTM A36, SAE 1018 / 1045, Q235B, Q355B; grade and supply state as ordered |
| Stainless Steel Grades | 304 / UNS S30400 and 316L / UNS S31603 |
| Alloy Steel | 4140 and other requested grades, subject to supply confirmation |
| Hot-Rolled Dimension Standard | EN 10058:2018, where specified and applicable |
| Material Standards | ASTM A36/A36M, ASTM A108 (cold-finished carbon/alloy bars), ASTM A276/A276M (stainless bars), and the relevant GB/EN grade standard |
| Delivery State | Hot rolled, cold drawn or bright finished, by grade and agreement |
| Surface & Edges | As-rolled or cold-finished surface; corner radius and edge treatment as specified |
| Length | Mill lengths or agreed cut lengths, checked against supply options |
| Documents | Material test certificate and dimensional inspection requirements per order |
Use width × thickness for your size list. The reference weights below help estimate tonnage for carbon steel bar orders.
| Width × Thickness (mm) | Nominal Area (mm²) | Carbon Steel kg/m* |
|---|---|---|
| 20 × 5 | 100 | 0.785 |
| 25 × 6 | 150 | 1.177 |
| 40 × 8 | 320 | 2.512 |
| 50 × 10 | 500 | 3.925 |
| 75 × 10 | 750 | 5.887 |
| 100 × 12 | 1200 | 9.420 |
*Nominal carbon steel density: 7,850 kg/m³. Mill condition and dimensional tolerances affect actual unit weight.
Review the flat faces, rectangular cut ends and supplied edge condition before your finished lengths are confirmed.
Clearly visible solid cross-section and ordered width-to-thickness proportion.
Surface finish and edge expectations are confirmed by material and delivery condition.
Natural mill finish for structural and general fabrication stock.
Cold-finished flat bar when tighter dimensional tolerances are required.
Agreed lengths and edge preparation for your fabrication schedule.
The specified product form guides how you purchase, receive and process the material.
Supplied in straight lengths with a rectangular solid cross-section. Your RFQ specifies width, thickness, length and steel grade.
Flat-rolled plate and steel strip are purchased to their own product standards, width ranges and delivery formats.
Flat bars are specified in frames, steel structures and machined components. Match the grade and bar dimensions to your technical drawing.
Structural mounting brackets, connection pieces and workshop supports.
Bar blanks for machined spacers, guides and equipment mounting parts.
Flat bar sections for fabricated industrial framework and assemblies.
Material for machined fittings and custom keys where the grade is specified.
Flat steel members used in barriers, edge frames and support components.
Mixed-width straight-length flat bars prepared for distribution and stockholding.
Send your bar dimensions, quantity and fabrication requirements in one RFQ.
Support your steel purchasing with factual production scale, stock coordination, grade verification and export planning.
Our company produces 8 million metric tons of steel annually across its product range. Discuss repeat and bulk bar supply with our team.
Manufacturing ↗Our regular company-wide steel inventory is 1 million metric tons. Each flat bar grade and size is checked against current supply.
Steel Inventory ↗Define the material standard, section dimensions and test certificate needs at the enquiry stage.
Quality Control ↗Request one quotation covering bar grades, packing, delivery terms and destination port.
Contact Sales ↗Enter the solid bar width, thickness, length and quantity. Choose a reference density to estimate your order weight.
Nominal solid rectangular cross-section; actual bar weight follows agreed dimensional tolerance and measurement terms.
BAOSTEEL METAL supports steel procurement through company-wide manufacturing operations with actual annual output of 8 million metric tons. Share your material list to check the applicable flat bar production and supply route.
Send your flat bar widths, thicknesses, lengths and total quantity. Our team can confirm current stock options, supply conditions and lead times.
The company’s regular steel inventory totals around 1 million metric tons across product categories. Your flat bar availability is confirmed by grade, shape, delivery condition and dimensions.
Send your full bar schedule through the RFQ form. Our team will respond with the applicable supply details.
Order each flat bar with the material, size and test scope your project requires. Define the MTC and tolerance conditions when you send the purchase list.
Include the drawing and processed dimensions with your bar quotation. Available cutting and machining arrangements are confirmed against the material, section and tolerance requirements.
Confirm bar length, quantity, lifting arrangement and destination port. Your order can include suitable bundling, protection and the agreed shipment documents.
Choose the material and section you need. Follow the links to detailed grades, solid shapes and applicable steel forms.
Useful details for stockists, contractors, industrial fabricators and procurement teams.
Use width × thickness in millimetres, followed by the required finished length, material grade, delivery condition and total quantity.
Common purchasing requests include ASTM A36, Q235B, 1018 and 1045 carbon steel, plus 304 and 316L stainless steel. Send your grade and dimensions for supply confirmation.
EN 10058:2018 covers dimensional and shape tolerances for hot-rolled flat steel bars and wide flats. Your final order should identify the applicable specification and tolerance requirements.
For carbon steel, kilograms per metre equal width (mm) × thickness (mm) × 0.00785. Multiply by length in metres and bar count for estimated total mass.
Share your cut-length schedule, tolerance requirements and desired MTC with the RFQ. Our team will confirm processing options and documents for your order.
Send your required grade, dimensions, quantity and destination. Our team will review the inquiry.