The alloying principle of low alloy high strength steel plate mainly uses solid volume strengthening, fine grain strengthening and precipitation strengthening produced by alloy elements to improve the strength of low alloy high strength steel plate, ASME SA516 Grade 60 carbon steel. At the same time, the effect of fine grain strengthening on the reduction of ductile brittle transition temperature of low alloy high strength steel platel is used to offset the adverse effect of carbon nitride precipitation strengthening on the rise of ductile brittle transition temperature of steel, so that low alloy high strength steel plate can obtain high strength while maintaining good low temperature performance.
The large diameter cold drawn seamless steel pipe is a steel pipe with an outer diameter of more than 1000mm. The large diameter seamless steel pipe is made of steel ingot or solid billet through perforation and then hot rolling, cold rolling or cold drawing. If they are long, they need to remove the redundant parts, that is, cut them out. Their length ASME SA516 Grade 60 carbon steel is suitable for the length required by the construction of steel pipes.
In March, the daily output of key iron and steel enterprises decreased on a month on month basis. In terms of enterprise inventory, in late March, the key statistics showed that the ASME SA516 Grade 60 carbon steel steel inventory of iron and steel enterprises was 18.067 million tons, a decrease of 3.342 million tons or 15.6% compared with the highest inventory in early March, and an increase of 8.534 million tons or 89.5% compared with the beginning of the year.
The closing price of hot coils on the Shanghai market on March 14 was 4950-4960 yuan/ton, which was the same as last Friday's price. The closing price of hot coils in Tianjin market was 4850-4870 yuan/ton, down 30 from last Friday's price. The closing price of S355JR hot coil was 4960-4970 yuan/ton, which was the same as last Friday's price.