Q235B Hot Rolled Carbon Steel Coil GB/T 700 Infrastructure Grade Steel Sheet 1.2-20mm Thickness

The Q235B hot rolled carbon steel coil is a general structural steel grade produced in accordance with the GB/T 700 standard, the most widely used structural specification in China and a common reference for international infrastructure projects. The grade delivers a balanced combination of strength, weldability and formability, making it an economical and reliable choice for construction, engineering and general fabrication.

Supplied in the hot rolled condition with a clean, uniform surface, the coil is available in thicknesses from 1.2mm to 20mm and widths from 600mm to 2000mm, with standard inner diameters of 508mm and 610mm. Each shipment is accompanied by a mill test certificate covering chemical composition and mechanical properties, ensuring complete quality assurance and traceability.

• GB/T 700 Compliance: full conformity with the Chinese structural steel standard, widely referenced globally.
• Reliable Mechanical Properties: 235 MPa minimum yield strength for dependable structural use.
• Excellent Weldability: low carbon content permits all common welding processes.
• Wide Thickness Range: 1.2-20mm covers light and heavy infrastructure applications.
• Economical Grade: cost-effective material for high-volume construction projects.
• Mill Test Certificate: full MTC supplied with every shipment for verification.

The Q235B coil is used for building structures, bridges, infrastructure projects, welded fabrications, machinery parts, pipes and general engineering. It is a preferred grade for contractors and importers in the Middle East, South Asia, Africa and Southeast Asia seeking a reliable, economical structural material with full documentation.

Each coil is wrapped with waterproof paper and steel strapping, then loaded into export-grade seaworthy bundles with edge protection and secure lashing. Pre-shipment inspection is standard, with SGS and BV third-party testing available on request. Production is controlled under an ISO 9001:2015 quality management system.

With a monthly rolling capacity of 50000 tons, we support both spot and long-term contract orders. Contact our sales team with your required thickness, width and quantity for current pricing and delivery schedules.