s355j2 n hot rolled steel with ISO 9001:2000 Certificate

We are world class steel materials supplier and exporter. Our main steel materials are: carbon and hsla steel, boiler and pressure vessel steel, gas cylinder steel, shipbuilding and offshore platform steel, pipeline steel, weathering steel / corten steel, s355j2 n hot rolled steel alloy steel, automobile structure steel, abrasion resistant steel, clad steel, stainless steel etc.. Meanwhile, we also have steel processing center, and can provide cutting, welding, bending, drilling etc. processing for steel materials.

Characteristics of s355j2 n hot rolled steel, Q1150 and S1150Q steel plates:1. High purity steel: the contents of inclusions P, S and H, O, N in steel are strictly controlled.2. Ideal strength reserve: the yield strength and tensile strength are moderately controlled, and the surplus is usually 50-80MPa.3. Reasonable yield ratio control: by adjusting the composition and improving the process, the yield ratio is more reasonable.

s355j2 n hot rolled steel, Hot rolled seamless tube is usually produced on automatic tube rolling mill. After the solid tube blank is inspected and the surface defects are removed, it is cut to the required length, centered on the end face of the piercing end of the tube blank, then sent to the heating furnace for heating, and perforated on the piercing machine.

The surface of the laser radiation heating surface is heated by heat conduction to the internal diffusion, and a specific molten pool is formed by controlling parameters such as laser pulse width, energy, peak power and repetition frequency. It can realize butt welding, surfacing welding, sealing welding and pulse spot welding for s355j2 n hot rolled steel. High aspect ratio, small welding seam width, small heat-affected zone, small deformation, fast welding speed, smooth and beautiful welding seam.