New technology of AH36 hull structure steel cutting

The company specializes in the research and development, production and sales of AH36 hull structure steel seamless pipes, longitudinally welded pipes, large-diameter welded pipes, API 5L welded pipes, spiral welded pipes, and large-diameter thick-walled straight seam steel pipes. The company has AH36 hull structure steel five production lines in three major production workshops: large-diameter longitudinally welded pipe production workshop,AH36 hull structure steel rolled steel pipe production workshop, and thermally expanded steel pipe production workshop, with an annual production capacity of more than 100,000 tons.

Scope of application of JIS G3101AH36 hull structure steel : SS400 steel plates and other steel products are suitable for general structural buildings, bridges and ships, and the final products are hot rolled products.

The surface hardness of NM400 wear-resistant steel plate usually reaches 360-450HB, and the steel has a high mechanical strength. Its mechanical properties are three to five times that of ordinary low alloy steel plate. NM400 wear-resistant steel plate has excellent mechanical properties and good wear resistance, and can adapt to various mining conditions under different working conditions. NM400 steel can significantly improve the wear resistance of mechanical components, improve the service life of machinery, and reduce production costs.

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 AH36 hull structure steel 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.

"SA572 Grade 55 [380] steel chemical composition(%)Carbon max.: 0.26Manganese max.: 1.35Phosphorus Max.: 0.030Sulfur Max.: 0.030Silicon max.: 0.40AH36 hull structure steel, SA572 Grade 55 [380] steel mechanical propertiesTensile strength min. MPa: 380Yield strength min. MPa: 485Elongation % min. in 200mm : 17Elongation % min. in 50mm : 20"

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