low alloy high strength structural steel plate (q390)-pg娱乐游戏官网

1  the main purpose

q345  low-alloy high-strength structural steel plate series with thickness  ranging from 6 to 200mm is widely used in steel structure construction,  engineering machinery, mining machinery, heavy-duty vehicles, bridges,  pressure vessels and other engineering structures, especially for  weldability and toughness. highly important construction and mechanical engineering structures are required.

2 grades and standards

grade  q345b/c/d/e; execution standard: gb/t 1591-2008 "low-alloy  high-strength structural steel" (equivalent to japanese standard  jisg3106-2008 grade sm490, european standard en10025-04 medium grade  s355jr/j0/j2 /k2)

3 technical conditions of supply

3.1 product specifications

6～200×1500～4000×lmm

3.2 chemical composition
                 table 1 chemical composition%

note: b, c, d, e grade  z-direction performance steel plates can be provided. if z-direction  performance is required, the steel plate s content is to be carried out  according to the gb/t5313-85 standard. the z-direction performance steel  plate is marked with the z-direction level after the steel number.

3.3 力学性能
                  表2 力学性能