High-strength, low-alloy structural steel plate manufactured to the GB/T 1591 standard, grade Q345B. These hot-rolled plates deliver medium tensile strength (nominal yield around 345 MPa) with good weldability, formability and toughness for general structural and heavy-fabrication use.
Key specifications
- Standard: GB/T 1591 (Q345B)
- Production method: Hot-rolled
- Thickness range: 2 – 240 mm
- Width range: 100 – 4,800 mm
- Length range: 100 – 25,000 mm
Typical applications
- Structural steelwork (beams, columns, frames)
- Bridges and civil infrastructure
- Heavy machinery and equipment fabrication
- Truck bodies, trailers and industrial containers
- General engineering and welded structures
Quality and compliance
Supplied to internationally recognised quality standards. The Q345B grade is a low-alloy structural steel designed for reliable mechanical performance in welded and formed components. Specify required dimensions, surface condition and any testing or certification needs when requesting a quote.
How to request a quote
When submitting an RFQ, include required grade (Q345B), thickness/width/length, quantity, delivery terms and any inspection or certification requirements so suppliers can provide competitive, accurate offers.
