Effect of laser welding technology on weld microstructure of SA283 grade D carbon steel plate sheet

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SA283 grade D carbon steel plate sheet, Steel pipes are widely used in our life, such as pipelines for transporting oil, natural gas, gas, water and some solid materials. Steel pipe can also be used to manufacture building structure grid, prop and mechanical support, which can reduce weight, save metal by 20-40%, and realize factory mechanized construction. For steel pipes on the market, in fact, there are seamless pipes and welded steel pipes. If not purchasing often, buyers will easily ignore their models and some material problems.

S355NC steel offers excellent bending, flanging, cold-bordering and folding SA283 grade D carbon steel plate sheet properties in both longitudinal and transverse direction. The bending radii specified below should be observed as minimum values.

Chemical composition of Q390C steel plate: C ≤ 0.20, Si ≤ 0.50, Mn ≤ 1.7, P ≤ 0.030, S ≤ 0.030, Nb ≤ 0.07, V ≤ 0.20, Ti ≤ 0.20, Cr ≤ 0.30, Ni ≤ 0.50, Cu ≤ 0.30, N ≤ 0.015, Mo ≤ 0.10, Al ≤ 0.015. The mechanical properties of Q390C steel plate are: yield strength ≥ 390 MPa, tensile strength 470-620 MPa, elongation after fracture ≥ 18%, impact energy 34J. SA283 grade D carbon steel plate sheet, Q390C steel plate is used for bridges, vehicles, ships, workshops and other large structural parts, high and medium pressure Petrochemical vessels, boiler tubes, pipes, superheaters, pressure vessels, heavy machinery, etc. application.

Iron and steel goods, including pig iron, ingots, all kinds of steel and so on. Therefore, logistics companies are required to load evenly and evenly in the process of transportation, prevent moisture and prevent corrosion. It is necessary to prevent the SA283 grade D carbon steel plate sheet steel sheet from being mixed with water when transporting the steel; it is necessary to prevent the SA283 grade D carbon steel plate sheet steel from being mixed with water when transporting the steel; it is necessary to prevent the steel from being mixed with water when transporting the steel; it is necessary to prevent the steel from being mixed with water when transporting the steel; it is necessary to prevent the steel from being mixed with water when loading the SA283 grade D carbon steel plate sheet steel sheet on the truck Good luck.

The high strength SA283 grade D carbon steel plate sheet low alloy steel, which is shorten as HSLA steel, is one of our main products. We have professional team to serve you. For any demands or questions about HSLA steel, for example, ASTM A572 grade 50 chemical composition, difference between S355JR and S355J2, mechanical properties of SA283 grade D carbon steel plate sheet ST52 steel, Q345B tensile strength, Q345D steel ASTM equivalent, HSLA steel price etc. , please do not hesitate to contact us and consult.