... C & European Standards, American Standard 4. Hot rolled boiler steel plate Thickness: 6mm-80mm Material Quality: 16Mng, 20g, 15GMng, 12G1Movg ... /70 & Europe Standard, DIN 6. Hot rolled spring plate Size: With various thickness Material Quality: 65Mn, 60Si2Mn, 50GVA 7. ... Hot rolled bridge steel plate Size: 6-60mm Material Quality: 16mq ...