GB713 Q370R Steel Grade

Overview

GB713 Q370R is a Chinese low-alloy, high-strength steel grade produced to the GB 713 standard for boiler and pressure-vessel applications. It is formulated for use at elevated temperatures and is commonly supplied as plate or coil for fabrication of boilers, pressure vessels and related welded components.

Key features

• Conforms to GB 713 standard for boiler and pressure-vessel steels
• Low-alloy, high-strength composition suitable for elevated-temperature service
• Supplied as plate or coil depending on thickness and customer requirements
• Typical applications: boiler shells, pressure vessel shells and heads, heat exchangers, and other pressure-retaining structures

Available sizes and supply formats

• Thickness: 3–150 mm
• Width: 1,220–4,200 mm
• Length: 5,000–18,000 mm
• Coil supply: available for thickness ≤ 25 mm

Related grades

Other common GB713 grades supplied for boilers and pressure vessels include Q245R, Q345R, 15CrMoR, 18MnMoNbR, 14Cr1MoR, 13MnNiMoR and 12Cr1MoVR.

Ordering and technical notes

• Specify required thickness, width, length (or coil) and any required cutting, edge preparation or surface protection when placing an order.
• Confirm required mechanical and chemical property limits, heat treatment state, inspection and testing (e.g., UT, PMI, hardness, impact) as part of technical specification or purchase order.
• For pressure equipment, ensure supplied certification and test reports meet the applicable code or regulatory requirements for your jurisdiction.

If you need assistance with sizing, material certificates, or custom-cut plates/coils, request technical details from the supplier when placing an inquiry.