How to distinguish the normal floating rust and rusting of S275ML steel plate

The yield rate is a comprehensive technical and economic index in the production of medium and heavy plates such as S275ML steel plate. Increasing the yield rate can not only reduce the loss of metal, but it is also vital to the economic benefits of the steel enterprise. The influencing factors of the yield of medium and heavy plates are various, for example, the variety structure, negative deviation rolling level, plate shape control level, cutting loss, rolling waste and burning loss, etc.

GB / T1591 Q345D steel is a commonly used low alloy plate in China. It is equivalent to grade S355J2 in Germany and ASTM A529MGr50 in the United States, with slightly different chemical composition and the same mechanical properties. Under normal delivery conditions, S275ML steel plate, Q345D steel equivalent to S355J2G3 in European standard, and even almost the same performance as the S355J2G4. They can be used interchangeably.

The increase in China's S275ML steel plate and so on steel production will provide strong support for iron ore prices in the second quarter. According to the latest Outlook Survey of S&P Global Platts, despite the slow recovery of downstream steel demand, iron ore prices should be strongly supported in the second quarter as Chinese steel mills are expected to increase steel production.