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While both ASTM A203 Grade B and ASTM A106 Grade B serve critical roles in industrial applications, they are fundamentally different in composition, purpose, and performance.2026-06-01
Trade assuarance GB grade Q355NH H beam steel
Q355NH H beam steel is the implementation of standards GB, with high-quality steel toughness, plastic extension, molding, welding, abrasion, high temperature, fatigue and other characteristics, we have a large number of Q355NH H beam steel spot and with the rest of the world's old and new customers To maintain a long-term relations of cooperation, the following look at our Q355NH H-beam size and size and production process.
Chemical content of GB Q355NH H beam:
C≤0.16;Mn;0.50-1.50;Si≤0.50;P≤0.03;S≤0.03
Thickness:4-40mm;web thickness:6-20mm;web width:100-900mm;flange width:100-500mm;length:6-12m
Technique:hot rolled
Surface treatment:coated
Mechanical properties: tensile strength σb (MPa):325-355; yield strength σs (MPa):490-630; elongation δ5 (%):≥20
Payment form: T/T, L/C
Application:mainly used for railways, vehicles, bridges, towers and other long-term exposure to the atmosphere in the use of steel structure. Used in the manufacture of container, railway vehicles, oil derrick, harbor construction, oil platforms and chemical equipment in the oil containing hydrogen sulfide corrosive media containers and other structural parts.
About Q355NH H beam on the basic chemical properties and mechanical properties, if you want to know more, please feel free to contact us, we will give you a detailed answer, we only provide qualified Q355NH H beam products with the best quality and reasonable The price for our customers, look forward to working with you for your cooperation.