Q345R Steel Plates

High-strength low-alloy steel plates produced to Chinese boiler and pressure-vessel standard GB/T 713 (GB713). These plates are formulated for elevated-temperature service and pressure-containing applications where toughness, weldability and specified high-temperature properties are required.

Key features

• Main steel grades available: Q245R, Q345R, Q370R, 15CrMoR, 18MnMoNbR, 14Cr1MoR, 13MnNiMoR, 12Cr1MoVR
• Typical applications: boiler shells, pressure vessels, multilayer container inner tubes, flanges, tube plates and other compression elements
• Compliance: manufactured to GB/T 713 specification for pressure vessel steels (Chinese national standard)

Standard dimensions and supply forms

• Thickness range (plates): 3–150 mm
• Width: 1,220–4,200 mm
• Length: 5,000–18,000 mm
• Coil supply: available for thickness ≤ 25 mm
• Typical delivery state: hot-rolled

Notes for purchasers

• Q345R is a commonly used low-alloy, high-strength structural steel for boilers and pressure vessels, suitable for components that operate at elevated temperatures.
• Recommended for shell sections with larger thicknesses (for example > 36 mm) and for structural compression elements such as flanges and tube plates.
• Export and project-ready supply options: mill test certificates (MTC) and inspection reports can be provided on request. Please specify required grade, thickness, dimensions, quantity, required delivery state and any third-party inspection or testing when requesting a quote.