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Q690D steel plate

Q690D steel plate is a high-strength welded structural steel grade.Surface treatment, cleaning and polishing standards, packaging are used, and the size can be packaged and manufactured according to customer requirements, and can be widely used for making steel bars or building roof trusses.

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Q690D steel plate sheet is an iron carbon alloy with carbon content less than 2.11% and a small amount of silicon, manganese, sulfur, phosphorus and other impurities. Carbon steel inevitably contains some impurity elements during smelting, which has a great influence on the performance and quality of steel, so it should be controlled. The quality of carbon steel is mainly measured by the content of sulfur and phosphorus. The lower the Q690D steel plate sheet content of sulfur and phosphorus, the better the quality of carbon steel.

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