Commodity:Square Bar. Steel grade: 300 series Standard: GB, DIN, ASTM, JIS,DIN Size: 10*10-40*40mm Square Bar Usage: Widely applied ... to machine-made industry, chemical industry, spin, shipping industry, architecture, food industry, household products, and etc. Steel ... 40*40mm Packing: export standard packing or as requirements. Square bar (Steel Square Bar GB Standard)