The difference between Q235 steel and Q345 steel:The lower limit of yield strength of Q235 steel is 235MPa, the lower limit of yield strength of Q345 steel is 345MPa. The A572 Gr.50 and SA283 Grade C carbon plate alloy content of Q235 steel is common carbon steel and Q345 steel is low alloy steel. Q345 steel is used for structures, mechanical parts, building structures, general metal structures bearing dynamic loads such as medium and low pressure vessels, oil tanks, vehicles, cranes, A572 Gr.50 and SA283 Grade C carbon plate mining machinery, power stations, bridges, etc..
A572 Gr.50 and SA283 Grade C carbon plate controlled rolling is that, on the basis of adjusting the chemical composition of A572 Gr.50 and SA283 Grade C carbon plate, 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 A572 Gr.50 and SA283 Grade C carbon plate.
Laser cutting A572 Gr.50 and SA283 Grade C carbon plate has no burr, wrinkle and precision is high. It is superior to plasma cutting. Laser cutting has good cutting quality, narrow cutting width (generally 0.1-0.5m m), high accuracy (generally 0.1-0.4mm hole center distance error, 0.1-0.5mm contour dimension error), good surface roughness (generally Ra is 12.5-25μm), and the A572 Gr.50 and SA283 Grade C carbon plate cutting seam can be welded without further processing. Fast cutting speed: for example, with 2kW laser power, the cutting speed of 8mm thick carbon steel is 1.6m/min.
Before delivering our hot rolled plate product we apply various tests to check the quality of carbon steel A572 Gr.50 and SA283 Grade C carbon plate plates such as- mechanical test, chemical test, hardness test, toughness test, eddy current test, impact test, micro test, flaring test, flattening test, etc. We are provided best packing for structural steel plates to avoid rust. Our after-sales service team will contact you if you have any question.