供应P235GH P235HI 1.0345 P265GH 1.0425 C22G2 1.0460 P295GH高温结构用钢和低温钢的化学成分P235GH P235HI 1.0345 P265GH 1.0425 C22G2 1.0460 P295GH高温结构用钢和低温钢的力学性能P235GH P235HI 1.0345 P265GH 1.0425 C22G2 1.0460 P295GH高温结构用钢和低温钢的抗拉强度P235GH P235HI 1.0345 P265GH 1.0425 C22G2 1.0460 P295GH高温结构用钢和低温钢的屈服强度P235GH P235HI 1.0345 P265GH 1.0425 C22G2 1.0460 P295GH高温结构用钢和低温钢的硬度P235GH P235HI 1.0345 P265GH 1.0425 C22G2 1.0460 P295GH高温结构用钢和低温钢的伸长率