06Ni9DR vessel plate tolerance and delivery state

06Ni9DR vessel plate size, shape, weight and tolerance:
The size, shape and tolerance of 06Ni9DR steel plate shall comply with the provisions of GB / T709, and the thickness tolerance shall comply with the provisions of class B in GB / T709. It can also meet the requirements of class C in GB / T709 according to the requirements of the user.

06Ni9DR vessel plate is delivered according to the theoretical weight recording. The thickness used in the theoretical weight recording is the arithmetic mean of the maximum and minimum allowable thickness of the steel plate, and the density of the 06Ni9DR steel is 7.85g/cm3.

06Ni9DR vessel plate delivery status:
In order to improve the toughness of the 06Ni9DR steel, the intermediate heat treatment (secondary quenching) can also be carried out. For the 06Ni9DR steel plate with thickness less than 12mm, it can also be delivered in the state of twice normalizing and tempering. The tempering temperature of the 06Ni9DR steel plate is not less than 540℃.