... pipe , square steel 1,Stndard:GB/T 3094-2000 2,Material:Q195,Q215,Q235 3,Thickness:1.0-7.25mm steel ... pipe , square steel 1,Stndard:GB/T 3094-2000 ... 2,Material:Q195,Q215,Q235 3,Thickness:1.0-7.25mm ... ~200*200mm ,20*30mm~120*80mmWall thickness1.0-7.25mmMaterialQ195 Q215 Q235StandardGB/T 3094-2000others1,All the production ...