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What is low-alloy high-strength structural steel Q690D

What is low-alloy high-strength structural steel Q690D
Jul 06, 2021

Q690D is a low-alloy high-strength structural steel, classified as structural steel. Q is an indication of the yield strength, 690 is its lower limit yield value, and D is its grade. Q690D steel has high yield strength and tensile strength. The corresponding trademarks and Q690C, Q690D, Q690E, Q690F, etc. are the same trademark but different grades.

Q690D steel plate standard: GB/T16270.

structural steel Q690D

Q690D steel plate delivery status: structural steel Q690D should be delivered in quenched and tempered condition, and the other trademarks can also be delivered according to the delivery status of some special requirements of customers, but it should be indicated in the contract.

Q690D steel plate size, shape, weight and allowable error
A. The size, shape, weight and allowable error of the Q690D steel plate should conform to the rules of GB/T709.
B. Upon agreement between the supplier and the buyer, Q690D steel plates of other dimensions, shapes and allowable errors can be supplied.

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