... office of the Qilu Special Steel Co., Ltd. The main products are big size forged round bars, including 9 series(Alloy ... and so on) and more than 100 steel grades. Some products like S45C, SCM440, SCM435, SNCM439, D2, H13, SAE52100,SK3 and ... , a large-scale special steel enterprise with producing, trade, service, new products invention capacities. It takes the advanced production process, EAF+LF ...