The specifications available for GL-DH 40 oil platform engineering steel, pressure vessel plates are: thickness 8-700mm, width 1500-4200mm, length 4000-17000mm, and unit weight up to 30.00 tons. Our company can provide cutting, welding, drilling and turning services if required. Available flaw detection requirements: Z15-Z35 thickness direction performance requirements, high strength and toughness requirements, pressure vessel plate and other steel plates.
Our company's GL-DH 40 oil platform engineering steel power boilers, heating furnaces of double bars, double high lines and medium and thick plates all adopt heat storage technology, which can fully use blast furnace gas; the ladle baking, Maerz active lime kiln and medium and thick plate heat treatment furnace all burn converter gas, which can improve the GL-DH 40 oil platform engineering steel utilization rate of secondary energy and realize negative energy steelmaking in steelmaking process.
Blast furnace ironmaking is a traditional ironmaking method based on coke energy. It cooperates with converter steelmaking and is the main method of producing GL-DH 40 oil platform engineering steel steel at present. This dominance of blast furnace ironmaking is not expected to change for quite a long time. The essence of blast furnace ironmaking is the reduction of iron. Besides, coke is used as fuel and reducing agent. At high temperatures, iron ore or iron-containing raw materials are reduced from an oxide or mineral state to liquid pig iron.
With the increase of temperature, the yield limit of GL-DH 40 oil platform engineering steel will decrease monotonically, but the tensile strength of GL-DH 40 oil platform engineering steel will rise to a high peak value at a certain temperature, and then decrease. This peak temperature is called the blue brittleness temperature of GL-DH 40 oil platform engineering steel. Near the blue brittleness temperature, the GL-DH 40 oil platform engineering steel strength increases and the plasticity decreases. The elongation and section shrinkage of GL-DH 40 oil platform engineering steel increase with the increase of temperature, but there is a low peak at the blue brittleness temperature. The blue brittleness temperature of low carbon steel ranges from 200 ℃ to 250 ℃. The blue brittleness of low alloy steel is not obvious as that of low carbon steel, and the blue brittleness temperature is higher.
The company has a professional after-sales service team and good after-sales service reputation, providing full and uninterrupted after-sales service, to ensure timely and rapid solution to customer problems. The company is recognized as a 5-star brand of market quality cost performance and customer satisfaction by Market Research Center, and rated as "AAA credit enterprise of enterprise credit evaluation", and also a leading steel producer and service provider in the world.
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