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GB/T 16270-2009 Q960C High strength structural steel plates in the quenched and tempered co
GB/T 16270-2009 Q960D High strength structural steel plates in the quenched and tempered co
GB/T 16270-2009 Q960E High strength structural steel plates in the quenched and tempered co
GB/T 16270-2009 Q960F High strength structural steel plates in the quenched and tempered co
GB/T 16270-2009 Q690E High strength structural steel plates in the quenched and tempered condition Q690E Che
GB/T 16270-2009 Q460C High strength structural steel plates in the quenched and tempered condition
GB/T 16270-2009 Q460D High strength structural steel plates in the quenched and tempered condition
GB/T 16270-2009 Q460E High strength structural steel plates in the quenched and tempered condition
