... steel ingot is 60 ton High strength structural steel plates in the quenched and tempered condition is our best Superior products.Our ... ,D32,E32,A36,D36,E36,F32,F36,A40,D40,E40,F40,DH55,EH55,FH55,DH69,EH69,FH69,Z15,Z25,Z35GB712-2000API ... ,X80,X100API spec 5L-2004 4311High strength structural steel plates in the quenched and tempered conditionH:5-150W:900-4800I:3000-25000Q460 ...