Offer:GL A420,GL D420,GL E420,GL F420,Shipbuilding Steel Plate Steel Name: GL Grade A420,GL Grade D420,GL Grade E420,GL Grade F420,GL Grade A,Ship Steel plate ,Marine Steel plate . Main Application: GL Grade A420,GL Grade D420,GL Grade E420,GL Grade F420 steel plate is mainly used to Shipbuilding Project and Ocean Offshore Structural Project. Steel Standard: GL Rules,ABS,LR,DNV,BV,CCS,KR,NK,RINA,ASTM A131, EN10225 Rolling Size: Thickness*Width*Length 3-200mm*1220-4200mm*5000-18000mm