... (45#)St52(16Mn) CH8Ni9Ti 35CroGB/T3639-2000DIN2391For the automotive, motorcycle, engineering machinery, jack, electrical tools and sporting equipment and other areas10-180 ... , mining, textile, electric power, boilers, drinking water, machinery, military industryDN80-1500-square pipeQ195,Q235,Q345,20#GB/T6278-2002 Structure, decoration, construction