Q345B material is a low carbon alloy steel grade with good overall performance, low temperature performance, cold stamping performance, welding performance and machinability. Q345 serues steel is widely used in bridges, vehicles, ships, buildings, pressure vessels. Q represents the yield of this material, and the number 345 refers to the yield value of this material, which is around 345MPa. As the thickness of the material increases, its yield value decreases.
The hardness of the steel plate is very high, so special equipment is needed to complete the processing and cutting of these materials, A588 grade B heavy plate. In order to cut the plate into an ideal size, the steel plate cutting needs to use natural gas flame for preheating, which will generate a large amount of oxygen flow during the operation. These substances will oxidize the steel plate, and then form a cutting edge, then the cutting operation process is basically completed. In the actual processing work, there are many different classifications for steel plate cutting.
The company has strict control on the quality of A588 grade B heavy plate. Each A588 grade B heavy plate is inspected for the whole process, including raw material purchase, production process according to the procedures and relevant regulations. According to the technical standards and technical requirements, the composite quality inspection is carried out to confirm whether the A588 grade B heavy plate meets the specified quality requirements.
It can be predicted that in 2019, the national steel market quotation will not appear unilateral quotation, rebar A588 grade B heavy 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 A588 grade B heavy 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.
