Q345 S235 H Shaped Steel

Some foreign customers are often confused about GB Q345 steel. Q345 low alloy high strength steel is the replacement steel of old GB grade 12MnV, 14MnNb, 18Nb, 16MnRE, 16Mn, etc. The chemical element is similar to 16Mn, and Q345 increases the micro-alloy element V, Ti and Nb which refines the grain, greatly improving the toughness and comprehensive mechanical properties of steel, thus allows a greater thickness. Therefore, the mechanical performance of Q345 steel is better than that of 16Mn steel, especially its low-temperature performance.

Q345 series steel includes Q345A, Q345B, Q345C, Q345D, and Q345E, where Q represents the yield strength, the latter number 345 represents the yield point value (in MPa), and the letters A, B, C, D, and E respectively represent the low-temperature impact resistance of the steel, mainly due to the different impact temperatures. In short, Q345A does not do impact;Q345B, 20 ℃ room temperature impact;Q345C, 0 degree impact; Q345D, -20 degree impact;Q345E, -40 impact. Different impact temperature, impact value is also different. The grade of quality and code name of the deoxidization method can be indicated if necessary.

Applications of S235JR

S235JR is suitable for welding, bolted connections and riveting. It is readily weldable and bendable and suitable for non-critical structures. Its machinability characteristics are similar to that of mild steel.

It is typically used in the construction of buildings and bridges, vehicle structures, and tools and cutters. Plates are particularly suitable for shipbuilding.

We are experts in the supplying of materials to meet the individual requirements of a project, regardless of size, scope or difficulty. As a specialized supplier of highly qualified products such as Seamless/Welded Pipe and Tube, Plate and Equipment for industries such as Pressure Vessel, Heat Exchanger. We mainly service for industry of Oil & Gas, Petrochemical, Power Generation, Onshore & Offshore and other industry and energy field over the world.The services and support we provide are tailored to the needs of a particular customer and project, and are driven by in-depth knowledge of the products, and we are aware of the importance of high quality, on-time delivery and the pressures of meeting fabrication schedules, and also the importance of accurate and up-to-date reporting.Since our establishment, we have been servicing our customers and the projects in Canada, South America, Southeast Asia, Central Asia, Middle East, South Africa, North Africa and North Europe market.

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