... STEELSpecification: JIS G3141,GB Q235--Q345,ASTM A36,DIN STANDARD, EN STANDARD, etc All sizes from Size 20--Size 200CHANNEL ... GB Q235--Q345, ASTM A36, DIN STANDARD, UPN, UPE, etc SIZE: 50mm-400mm H BEAM STEELSpecification: JIS G3141, GB Q235--Q345, ... DIN STANDARD, EN STANDARD, etc All Sizes from Size 100--Size 600 I-BEAM STEELSpecification: JIS G3141,GB Q235--Q345,ASTM A36,DIN STANDARD, IPE, ...