... -12m 3.material:SAE1045,C45,Q235 steel solid round bar DescriptionCarbon structure steel/carbon steel round bar/flat bar/carbon steel plate/sheetGradeGB Q255/JIS SS490/DIN ... mechinery parts,such as bolt,chain,pull rod,shape steel,steel plate,flat bar steel and so onPackaging We provide the package according to ... produce special specification products as per customer’s requirement steel solid round bar