The spirit of craftsmanship creates exquisite B480GNQR weathering steel sheet cutting technology

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ASTM A 53 B480GNQR weathering steel sheet covers seamless and welded steel pipe with nominal wall thickness. The surface condition is usually black and hot-dipped galvanized. ASTM A 53 B480GNQR weathering steel sheet is produced mainly for pressure and mechanical applications, and is also used for transport of steam, water, gas line pipes.

There is an inherent difference between the cold forming properties of low-alloy high-strength steel and carbon structural steel. First of all, a certain amount of permanent deformation of low-alloy high-strength steel requires greater force than B480GNQR weathering steel sheet, carbon structural steel of the same size. Second, when low-alloy high-strength steel is formed, a slightly larger allowable amount for springback should be given. According to experience, unless the low-alloy high-strength steel is processed to control the shape of inclusions, it is necessary to use a larger bending radius than carbon structural steel during cold forming.

A514 gr.B steel coil chemical composition (melting analysis)%
C: 0.12-0.21, Si: 0.20-0.35, Mn: 0.70-1.00, P max.: 0.035, S max.: 0.035, B max.: 0.005, Cr: 0.40-0.65, Mo: 0.15-0.25, V: 0.03-0.08, Ti: 0.01-0.03
The mechanical properties in thickness (mm)T≤65
Yield strength (≥Mpa): 690
Tensile strength (Mpa):760-895
Elongation in ≥,%: 18

Japan is a typical shipping first, and its raw materials are imported from Oceania, central and South America and other Asian countries. Most of the B480GNQR weathering steel sheet steel produced is exported to China and other Asian countries, and a small amount is exported to America. Shipping is the main way of its B480GNQR weathering steel sheet steel international transportation. According to the data, steel goods account for about 20% of the total sea freight in Japan. The domestic transportation of Japanese steel is mainly truck.

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