Chinese 
Carbon Steel Flat Bar
- Multiple grades: general‑purpose Q235B, high‑strength Q355B, medium‑carbon 20#,45#
- Full dimension range: width 12‑300 mm, thickness 3‑60 mm with popular stocked sizes
- Standard factory lengths 6m /12m, fits structural installation and fabrication
- Versatile raw material for grounding, construction hardware, stamping and flange forging
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Product Overview
Carbon Steel Flat Bar is a hot-rolled rectangular solid steel bar widely used for construction, electrical grounding and mechanical fabrication applications. Manufactured according to GB/T704, EN10058 and ASTM A675 standards, it provides reliable raw material performance for structural and industrial projects.
Available grades include Q235B, Q355B, 20# and 45#, covering general structural applications, higher-strength load-bearing components and machining or forging requirements. Different steel grades allow buyers to select suitable material performance according to project requirements.
Carbon Steel Flat Bar supports a wide size range with width from 12mm to 300mm and thickness from 3mm to 60mm. Common stocked specifications include 20×3, 25×4, 30×5, 40×5, 50×6, 60×8, 80×10, 100×12, 120×14, 150×16 and 200×20, with standard lengths of 6m and 12m for fabrication and installation needs.
The product is widely processed into lightning earthing steel, steel purlins, curtain wall embedded components, cable tray supports, equipment bases, stamping blanks, guardrails and welded flange blanks. Each batch can be supplied with Mill Test Certificate including heat number, chemical composition and mechanical performance records for quality traceability.
Chemical & Mechanical Property Snapshot
Detailed Technical Specifications
Size Specification Table
Product Comparison Table
App Market
Reliable Steel Coil Solutions For Diverse Industrial Applications
Guardrail Flat Bar
Cable Tray Supports
Curtain Wall Embedded Parts
Product Packaging
Secure Export Packaging For Safe Handling And Delivery
FAQs
Carbon Steel Flat Bar is commonly used for lightning earthing, steel purlins, curtain wall embedded components, cable tray supports, equipment bases, stamping blanks and welded flange blanks.
The product is manufactured according to GB/T704, EN10058 and ASTM A675 standards.
Available grades include Q235B, Q355B, 20# and 45# for different structural and mechanical applications.
The product range covers widths of 12mm-300mm and thicknesses of 3mm-60mm, with common stocked sizes available.
Yes. Mill Test Certificate documentation can include heat number, chemical composition and mechanical performance test data.
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