Round Bar
Solid hot-rolled round bar with a clean, uniform surface and dense core — for machining, forging, shafts, fasteners and structural work. Cold-drawn accuracy to ±0.1mm and larger forged rounds available.
| Category | Sections & Profiles |
|---|---|
| Standards | GB, ASTM, EN, JIS, AS/NZS, GOST |
| Material / grades | Q235B, Q355B, 45#, 20#, 40Cr, 20CrMnTi, A36, 1045, S235JR, SS400 |
| Common sizes | 10, 12, 16, 20, 25, 40, 60, 100 mm |
| Length | 6m / 9m / 12m (custom) |
| Surface | Hot-Rolled, Cold-Rolled |
| Lead time | Stock orders dispatched same day; processed orders 3–5 days; custom orders scheduled on confirmation |
| Trade terms | EXW, FOB, CFR, CIF, DDP |
Detail Information
1. Round Bar — Overview
Solid hot-rolled round bar with a clean, uniform surface and dense core — for machining, forging, shafts, fasteners and structural work. Cold-drawn accuracy to ±0.1mm and larger forged rounds available.
2. Specifications
| Length | 6m / 9m / 12m, customizable |
|---|---|
| Surface | Black (hot-rolled) / peeled / cold-drawn / hot-dip galvanized |
| Material | Q235B, Q355B / 20#, 45#, 40Cr, 20CrMnTi / A36, 1045 / S235JR, S355JR / SS400 |
| Standard | GB/T 702-2017, GB/T 699, ASTM A29/A29M, EN 10060, JIS G 3191 |
| Tolerance | GB ordinary / precision, cold-drawn ±0.1mm |
| Size range | Diameter Φ6–Φ350mm (hot-rolled), forged rounds up to Φ800mm |
3. Material Grades & Standards
We supply this product in the following grades. Other grades and standards can be sourced on request.
- Q235B
- Q355B
- 45#
- 20#
- 40Cr
- 20CrMnTi
- A36
- 1045
- S235JR
- SS400
- GB
- ASTM
- EN
- JIS
- AS/NZS
- GOST
4. Applications
- Manufacturing
- Building & construction
- Infrastructure
- Energy & solar
5. Product Photos
6. Why Order From Shanghai Banzhijia Steel
- 20,000+ tons of ready stock across every product category
- Cutting, slitting, levelling and processing to your size
- Mill Test Certificates and export documents with each order
- Ocean freight or China–Europe rail to more than 20 countries
- Order-specific specification confirmation
- Inspection documents coordinated according to order requirements
7. Packing & Shipping
We coordinate ocean freight or China–Europe rail to the agreed destination, and prepare commercial invoices, packing lists, certificates of origin, bills of lading and Mill Test Certificates for each order.
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