What is the chemical composition content of hot rolled steel coils s355jr

Bridge steel plate processing is based on the hot rolled steel coils s355jr in the cutting process, should pay attention to not reduce the steel cutting surface and steel surface friction strength, so as not to make the cutting surface of Shenyang thick plate friction. In the process of processing, to avoid the steel surface of the heat treatment agent or other harmful substances into the steel plate.

In 2010, the 87th session of the International Maritime Organization (IMO) Maritime Committee passed the "Performance Standards for Alternative Anticorrosion Measures for Crude Oil Cargo Tanks". It is mandatory that the cargo tanks of large oil tankers above 5,000 dwt need to be protected or used The construction of corrosion-resistant steel promotes the rapid development of the research and application of corrosion-resistant steel for oil tankers in China. At present, the performance of domestic corrosion-resistant steel has reached the world's leading level and can meet the requirements of large-scale applications.

Non-secondary hot rolled steel coils s355jr product hot selling: 26*1500*9950, 23.5*2040*8100, 24*1500*6700, 23.5*1640*6550, 29*2140*7700, 30*1500*6000, 24*2000*9550, 26.5*2000*7000, 26*1600*6000, 32*1570*6000, 32.5*1560*6250, 25.5*1300*6000, 27*2550*6800, 27.5*2700*5500, 33*2340*6700, 34*1300*4000, 25.5*1740*8700, 29*2550*9000, 29*2870*12000, 26*1300*8100, 32.5*3050*6500.

hot rolled steel coils s355jr annealing is to heat the steel to 30 ~ 50℃ above the critical temperature, keep it in the heat treatment furnace for a period of time, and then cool it down to room temperature with the furnace. The purpose of hot rolled steel coils s355jr annealing is to refine the grain of steel, eliminate internal stress and reduce hardness, improve cutting performance, increase toughness and plasticity, and facilitate welding and rolling processes. hot rolled steel coils s355jr annealing can be complete annealing, incomplete annealing, stress relief annealing, isothermal annealing and spheroidizing annealing.