What is quenched and tempered Q690D high strength steel plate

Q690D plate is one of the Chinese quenched and tempered high strength steel, which belongs to structural steel. Its executive standard is GB/T16270. In Q690D steel grade, Q is the expression of yield strength, 690 is its minimum yield value, and D is its grade. Q690D high strength steel plate has higher yield strength and tensile strength.

Q690D high strength steel plate package, mark and quality certificate shall comply with GB / T 247. Q690D high strength steel plate is widely used in the manufacturing of some parts of coal mining machinery, engineering machinery, such as hydraulic support, port crane, flat truck.

Delivery status of Q690D high strength steel plate:
Q690D high strength steel plate should be delivered in the state of quenching and tempering. In addition, Q690D high strength steel plate can be delivered according to the delivery state of some special requirements of customers, but it should be indicated in the contract.