17CrNiMo6 alloy steel is a grade at DIN 17120-(86 ) standard ( structural steel grades and mechanical property for forgings) . 17CrNiMo6 can be produced into hot rolled round bars and square bars, cold-drawing bars,forged bars.
The GB/T1591 Q345C is a steel model compared to the Q345A, Q345B steel. Low-temperature impact test has a low test temperature and good performance. Containing harmful substances P, S is lower than Q345A, B.