Structural steel S355JR, S355J0, S355J2G, S355J2G4 are low-alloy high-strength structural steels that comply with the European standard EN10025. S355JR steel in China is a low-alloy high-strength structural steel with a hardness of 70-80B and a yield strength of 300-400MPa. S355J2G3 steel is roughly equivalent to GB Q345D. S355J2G3 means that the delivery state is normalized, and the impact energy at -20°C is 27J. G3 and G4 mean the deoxidation method.
It can be predicted that in 2019, the national steel market quotation will not appear unilateral quotation, rebar A709 Gr 50W bridge steel plate steel main contract price of the largest shock range (the lowest price to the highest price), it is possible to reach as much as 1000 yuan this is the New Year's Chinese steel market quotation of the first characteristic. The second characteristic of Chinese steel market quotation in 2019 is that the average A709 Gr 50W bridge steel plate steel price of the whole year is roughly flat with the level of the previous year, or it is to rise somewhat, generally there will be no annual average price decline.
The weight of seamless steel pipe is only 1 / 5 of that of square steel. Seamless steel pipe corrosion resistance acid, alkali, salt and atmospheric environment corrosion, high temperature resistance, good impact and fatigue resistance, do not need regular maintenance. The effective service life of product A709 Gr 50W bridge steel plate more than 15 years.
BBN STEEL supply A709 Gr 50W bridge steel plate plate specifications range: thickness 8-650mm, width 1500-4020mm, length 4000mm-17000mm, single weight maximum 30.00 tons. Various special specification sheets can be rolled according to customer requirements. Types of steel products: carbon structural steel pipes, low-alloy high-strength steel sheet, steel angles for bridges, steel section for building structures, steel plates for shipbuilding and offshore platforms, steel for boilers and pressure vessels and alloy structures.
