The tensile strength of seamless steel pipe is more than 8-10 times of that of ordinary steel, and its elastic modulus is better than that of steel, with excellent creep resistance, corrosion resistance and seismic resistance; the mechanical performance of seamless steel pipe is excellent, easy to machine, etc.; the seamless steel pipe A588 Gr A high strength steel is highly elastic, reused in mechanical equipment, memoryless, deformation free, and antistatic.
EN10025-2 S355JR low alloy steel grade is equivalent to GB Q345B in Chinese standard. For the normal thickness, these two steel grades are both owned 345MPa yield strength. Plate S355JR+N indicates that the S355JR steel plate must be done Normalized heat treatment when rolling for improve the steel strength and weldability. Our mill would roll A588 Gr A high strength steel, S355JR alloy steel plate under as rolled or control rolled when customers' have not requested any heat treatment in their P/O.
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, A588 Gr A high strength steel based on a high starting point and high technology, the company has vigorously developed various steel products A588 Gr A high strength steel and deep-processed parts, steel structures, precision castings, seamless pipes.
A588 Gr A high strength steel controlled rolling is that, on the basis of adjusting the chemical composition of A588 Gr A high strength steel, by controlling the heating temperature, rolling temperature, deformation system and other process parameters, the change law of austenite structure and the microstructure of phase transformation products are controlled, so as to achieve the purpose of refining the structure and improving the strength and toughness of A588 Gr A high strength steel.
