空拔后钢管的弯曲度越大，均壁作用越小，甚至加剧壁厚不均。
The greater the tube-flexure after drawing is, the worse the wall-uniform effect and even the non-uniformity of wall thickness is aggravated.
空拔后钢管的弯曲度越大，均壁作用越小，甚至加剧壁厚不均。
The greater the tube-flexure after drawing is, the worse the wall-uniform effect and even the non-uniformity of wall thickness is aggravated.
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