... : 8#-63# ( Japan, Europe standard ) Material: Q235, Q345 2. hot rolled channel steelSize: 5#-40# ( Japan, Europe standard ) Material: Q235, Q345 3. ... Size: 12mm-300mm Material: Q235, Q345, 60SiMn, 65Mn 6. ledge steel Specification: D15, M15, M18, E19, M22 Material: M540 7. ... mining I-beam Specification: 9#, 10#, 11# 8. U-blacket steel Specification: 25U, 29U, 36U Material: 20MnK 9. hot rolled square ...