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The Q235NH railway steel sheet steel making furnace can only be used as primary refining, and the refining needs to be completed in the refining equipment outside the furnace, which is also called secondary refining. It is mainly through decarburization, desulfuration, denitrification and dephosphorization to improve the cleanness of the steel, to establish a chromium molybdenum low alloy steel with good oxidation resistance and high temperature strength, to remove unwanted harmful impurities from the steel, and to improve the Q235NH railway steel sheet internal quality of the steel.
ASTM Corten B steel is a hot-rolled structural steel product with better atmospheric corrosion resistance under Technical delivery conditions. ASTM Corten B steel conforms to ASTM standard, with yield strength of 355MPa and 345mpa, and the Q235NH railway steel sheet yield strength depends on the thickness. The tensile strength of ASTM Corten B steel is 470-630 MPa.
On the whole, on the one hand, under the support of better macroeconomic expectations and high costs, macro funds have disturbed the futures market from time to time and promoted the phased rise of Q235NH railway steel sheet prices. On the other hand, the current steel market's actual demand performance is average, and once Q235NH railway steel sheet prices rise too quickly, there will be fear of heights. In the short term, Q235NH railway steel sheet prices may fluctuate strongly.
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