7, What is the tolerance
This is a very important term, and the tolerance is the length or thickness deviation that is accepted as it is difficult because of various reasons in the production of the sheet. The actual thickness that comes out often does not reach the theoretical thickness. For example, a 6 mm plate is only 5.6 mm. This is the tolerance. The domestic tolerance is often a negative tolerance. Of course, there are also positive tolerances, but few. When buying and selling boards, it is usually calculated according to the theoretical thickness, which is why the theoretical price is lower than the weighing price. The tolerances are also different in size and price. The price of large tolerances is cheap. For example, 6 mm If it is 5.5 or less, it is a big tolerance.
Summary by Zhejiang Zhonggang Steel