mild steel equal angle and unequal angle 2) Material: Q195-Q235, Q345, 3) Standard: GB9787-1988 4) Grade: GB, ASTM, JIS, DIN mild steel equal angle and unequal angle steel angle standard sizes1) Material: Q195 ... -Q235, Q345,2) Standard: GB9787-19883) Grade: GB, ASTM, JIS, DINA kind of strip steel bearing ...