What causes the rust phenomenon of S690QL steel material production

Hot-rolled steel sheet / cold-rolled steel sheet: Steel ingots or slabs are difficult to deform at normal temperature and difficult to process. They need to be heated to 1100 ° C to 1250 ° C for rolling. This S690QL steel material production rolling process is called hot rolling. Rolling at room temperature is generally understood as cold rolling. However, from the point of view of metallurgy, the boundary between hot rolling and cold rolling should be distinguished by the temperature of metal recrystallization, that is, rolling below the recrystallization temperature is cold rolling; Rolling above the recrystallization temperature is hot rolling.

In January 2019, one of our Vietnam customer purchased 395.62 tons Q345B steel plate S690QL steel material production for their construction project, we prepared all the goods ready within 5 days, and supplied the goods with painting sand blasting to SA2.5 S690QL steel material production and priming gray oxide primer, and arrange shipment in time. Meet the customer urgent delivery request.

The company has superior geographical position and convenient transportation. Our main steel products are: low alloy high-strength plate, carbon structural plate, alloy structural plate, bridge plate, building structural plate, shipbuilding and offshore oil production platform plate, boiler and pressure vessel plate, pipeline plate, weathering steel plate, S690QL steel material production, etc.. In line with the principle of "not striving for the lowest price, but the best quality", the company wholeheartedly provides high-quality steel products and sincere services for users at home and abroad.

"As Covid 19 spreads around the world, all unnecessary businesses and factories have been closed in Italy this week. South Korea's POSCO, the world's fifth-largest steelmaker, announced on March 24th that it would close its S690QL steel material production wire-processing centre near the northern Italian city of Verona from Thursday March 26th until April 3rd. POSCO has already closed two wire-processing centres in Delhi and Pune. Two wire processing centers in Malaysia and Thailand also announced last week that they will be closed until March 31."