Jis hot rolled steel strip damascus spring use Standardastm , bs , gb , din , jis , aisi Gradeq195 , q215 , q235 , q345 , ss235 , ss400 , st37 , st42 , st52 , a36 Thickness1.2-2.0mm Width145-235mm Lengthcustomers' requirement Technologyhot rolled Colorprimary color Typesteel coil Surfacesmooth black Applicationsteel structure , metal product , construction structure Special pipeemt pipe Section shaperectangle