Tempering the important NM600 high strength structural steel plate welding structure often use high temperature tempering to remove residual weld stress. Classification: high temperature tempering above 400 ℃, medium temperature tempering 250 ~ 400 ℃, low temperature tempering 150 ~ 250 ℃, Quenching +Tempering is improve NM600 high strength structural steel plate strength, plasticity and toughness.
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This week, the price of NM600 high strength structural steel plate futures rose sharply, and the market mentality was positive. On the one hand, the recent arrival of steel mills is still not much, which has a certain support for the price. On the other hand, the business confidence in the future market is gradually restored, and the willingness to support the price is strong. Today, the move up momentum of NM600 high strength structural steel plate futures weakened. In the short term, there may be a slight adjustment pattern, but the probability of a sharp decline is small. It is expected that the NM600 high strength structural steel plate market will be mainly volatile tomorrow.
Under the action of the roller and the plug, a cavity is formed in the blank, which is called the blank. Then send it to the automatic tube rolling machine to continue rolling. Finally, the wall thickness of the whole machine is equalized and the diameter is calibrated by the sizing machine to meet the specification requirements. It is an advanced method to produce NM600 high strength structural steel plate, hot-rolled seamless steel tube by continuous rolling mill.
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