hot rolled steel plate :the maximum thickness of 300mm,and the maximum weight for single plate. hot rolled steel plate..20g,16Mng,15CrMog12CrMoVg,19 Mng22 Mng,13MnNiCrMoNbg20R,16MnR,15MnVR15CrMoR, 13MnNiMoNbR15MnNbR,15MnVNR16MnDR,09MnNiDR, 15MnNiDR12Cr2MoR, 14Cr1MoR07MnCrMoVR,07MnNiCrMoVDRSB410, SB450, SB480SPV235, SPV315, SPV355.SPV410, SPV450, SPV490SGV410, SGV450,SGV480SBV1A, SBV1B, SBV2, ...