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浅谈螺旋钢管偏差和螺旋钢管公差

发布时间:2016-3-29 9:45:07 浏览次数:555

1、螺旋钢管公差:标准中规定的正、负偏差值绝对值之和叫做公差,亦叫"公差带"。

1, spiral steel pipe tolerance: Standard in the positive and negative values of the absolute value of the value is called the tolerance, also called "tolerance zone".

偏差是有方向性的,即以"正"或"负"表示;公差是没有方向性的,因此,把偏差值称为"正公差"或"负公差"的叫法是错误的。

Deviation is a direction, namely to "positive" or "negative" said; tolerances is no direction, therefore, the deviation value is called the "tolerance" or "negative tolerance" moniker is wrong. .

2、螺旋钢管偏差:在生产过程中,由于实际尺寸难于达到公称尺寸要求,即往往大于或小于公称尺寸,所以标准中规定了实际尺寸与公称尺寸之间允许有一差值。差值为正值的叫正偏差,差值为负值的叫负偏差。

2, spiral pipe deviation: in the production process, due to the actual size is difficult to achieve the requirements of nominal size, that is often greater than or less than the nominal size, so standard provides the actual size and nominal dimension are permitted between a difference. When the difference is positive, the difference is negative.



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