Like all weather resistant steels, S355J2W is self protecting- the material rusts over time due to the reaction with chemical elements in the air. S355J2W corten steel coil and sheets have excellent impact strength and it is ideal for heavy use or in low temperature. It can be used in–situ without the need for expensive treatment or painting over time. Popular material KB grab dredger steelwith architects for use in steel sculptures and modern structures due to aesthetic appeal.
Beijing machining center has more than 1000 employees, including 360 technicians, 28 engineers, 6 senior welders, 15 professional welders, 52 bachelor's degree, 3 doctor's degree, and 8 R & D team. It is a professional KB grab dredger steel production team combining theory and practice. With an annual output of 80000 tons, looking forward to the future, our company continues to strengthen the advantages of KB grab dredger steel leading suppliers in the four steel fields of steel plate, steel pipe, stainless steel and special steel.
Since the welding process is often used in the fabrication and processing of steel structures, it is very important for low-alloy high-strength steels of such purpose to be welded using the arc welding process that is widely used in thin thickness plates and steel strips. Yes, the welding seam of the steel structure should have the required strength and toughness, so as to withstand the most unfavorable conditions for the intended use. At present, the development of KB grab dredger steel, low-alloy high-strength steels is carried out simultaneously with the development of various welding processes. Most low-alloy high-strength steels can be welded well.
KB grab dredger steel, Q345B low alloy steel plate composition: 1) Low carbon: Due to the high requirements for toughness, weldability and cold forming properties, its carbon content does not exceed 0.20%; 2) Add manganese-based alloying elements; 3) Adding auxiliary elements such as niobium, titanium or vanadium: a small amount of niobium, titanium or vanadium forms fine carbides or carbonitrides in the Q345B steel, which is conducive to obtaining fine ferrite grains and improving the strength and toughness of the steel; In addition, adding a small amount of copper (≤0.4%) and phosphorus (about 0.1%) can improve the corrosion resistance. Adding a small amount of rare earth elements can desulfurize and degas, purify steel, improve toughness and process performance.
Our company will accept the product quality objection registration record, pass it to the KB grab dredger steel production unit and relevant departments, and timely coordinate the supervision of product KB grab dredger steel quality objection. Our company coordinates the relevant department personnel to the customer unit to carry on the investigation, the processing.
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