
Q345B Channel Steel 120x60mm

Large Square Billet 200x200mm Q345B
The Large Square Billet 200x200mm Q345B is a robust low-alloy high-strength steel

Manufacturer of high-quality 200mm x 240mm rectangular billets in ASTM A36 carbon steel. Perfect for structural fabrication, forging, and construction projects. Request a quote today.


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Product details
Our 200mm x 240mm Rectangular Billet represents premium-grade carbon steel material manufactured according to ASTM A36 specifications. This substantial billet offers exceptional structural integrity and versatility for the most demanding industrial applications. With its generous cross-sectional area and excellent mechanical properties, this billet serves as an ideal raw material for heavy construction, infrastructure projects, and large-scale manufacturing across various industries.
| Product Name | Carbon Steel Rectangular Billet |
| Material Standard | ASTM A36/A36M |
| Cross-Section | Rectangle |
| Nominal Size | 200 mm (Width) × 240 mm (Height) |
| Standard Length | 6m, 12m or Custom Lengths |
| Length Tolerance | ±50 mm (for lengths ≤ 6m), ±75 mm (for lengths > 6m) |
| Straightness | ≤ 2mm per meter, ≤ 8mm total |
| Chemical Composition (ASTM A36 Requirements) | |
|---|---|
| Element | Content (%) |
| Carbon (C) | ≤ 0.26 |
| Manganese (Mn) | ≤ 1.20 |
| Phosphorus (P) | ≤ 0.04 |
| Sulfur (S) | ≤ 0.05 |
| Copper (Cu) | ≥ 0.20 (when required) |
| Note: Silicon content: 0.40% max |
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The Large Square Billet 200x200mm Q345B is a robust low-alloy high-strength steel


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