What is chemical composition of S690QL equivalent British standard

Normalizing is a special case of annealing, the effect is similar to annealing, but the microstructure obtained by normalizing is finer. For low or medium carbon steel, normalizing can improve hardness and machinability. For chemical composition of S690QL medium carbon steel and low alloy steel, normalizing can refine grain and uniform structure and reduce hardness. For high carbon steel and high alloy steel, normalizing can eliminate the network carbide produced by forging and improve the homogeneity of the preparation heat treatment structure.

Our strutural steel plates are not attacked easily by the chemicals in harsh weather. They are a hard, strong, and durable product. Their characteristics are tested through tests. We perform hardness, pmi, micro, chemical, mechanical, macro, ultrasonic test and more. We pack carbon steel plates, chemical composition of S690QL, hot rolled plates, structural steel sheets safely to maintain their good performance so that they serve longer than usual.

Zhengzhou BBN steel company was established in 2000. After more than ten years of development, it has formed a professional operation pattern integrating R&D, production, sales and after-sales service. In recent years, chemical composition of S690QL based on a high starting point and high technology, the company has vigorously developed various steel products chemical composition of S690QL and deep-processed parts, steel structures, precision castings, seamless pipes.

The spot price of hot rolling steel rose on August 18, with a large overall increase. The average price of major cities in China is 3624 yuan / ton, up 95 yuan from last Friday. Shanghai 3520-3540 yuan / ton increased by 70 yuan, Tianjin 3600-3620 yuan / ton increased by 150 yuan, and Lecong 3650-3660 yuan / ton increased by 150 yuan. Central and southern China, North China and Northeast China rose by 90-150 yuan, while Western China rose by 30-60 yuan. The rise in spot chemical composition of S690QL prices led to a significant increase in transactions across the region. Hot rolled futures remained at a high level after opening up and closed at 3440, up 75 2.23%.

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