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Tolerances and deviations of stainless steel pipes
Tolerances and deviations of stainless steel pipes
Stainless steel pipe deviation: In the production process, because the actual size is difficult to meet the nominal size requirement, that is, it is often larger or smaller than the nominal size, so the standard specifies the allowable difference between the actual size and the nominal size. A positive difference is called a positive deviation, and a negative difference is called a negative deviation.
Stainless steel pipe tolerance: The sum of the absolute value of the positive and negative deviations specified in the standard is called tolerance, also called "tolerance zone". Deviation is directional, that is, expressed as "positive" or "negative"; tolerance is not directional, therefore, it is wrong to call the deviation value "positive tolerance" or "negative tolerance".
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