Square Bar
Solid hot-rolled square bar with a dense core, straight body and clean square edges — for machining, forging, hardware tooling, gratings, gates and structural supports. Cold-drawn accuracy and hot-dip galvanized finishes available.
| Category | Sections & Profiles |
|---|---|
| Standards | GB, ASTM, EN, JIS, AS/NZS, GOST |
| Material / grades | Q235B, Q355B, 45#, 20#, 40Cr, A36, 1045, S235JR, SS400 |
| Common sizes | 10, 12, 16, 20, 25, 40, 50 mm |
| Length | 6m / 9m / 12m (custom) |
| Surface | Hot-Rolled, Cold-Drawn |
| 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. Square Bar — Overview
Solid hot-rolled square bar with a dense core, straight body and clean square edges — for machining, forging, hardware tooling, gratings, gates and structural supports. Cold-drawn accuracy and hot-dip galvanized finishes available.
2. Specifications
| Length | 6m / 9m / 12m, customizable |
|---|---|
| Surface | Black (hot-rolled) / cold-drawn / hot-dip galvanized |
| Material | Q235B, Q355B / 20#, 45#, 40Cr / A36, 1045 / S235JR, S355JR / SS400 |
| Standard | GB/T 702-2017, GB/T 905, ASTM A29/A29M, EN 10059, JIS G 3191 |
| Tolerance | GB ordinary / precision, cold-drawn ±0.1mm |
| Size range | Side 6–150mm (hot-rolled), forged squares up to 300mm |
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
- A36
- 1045
- S235JR
- SS400
- GB
- ASTM
- EN
- JIS
- AS/NZS
- GOST
4. Applications
- Manufacturing
- Building & construction
- Infrastructure
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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