... 空心管 hollow pipe; 空心管坯 hollow bloom; hollow shell; 空心管形铆钉 tubular rivet; ...
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Axial crack of hollow bloom 管坯轴向裂纹
Centrifugal casting of hollow bloom 离心浇铸空心坯
hollow arbor bloom 空心管坯
Plug is one of the key deformation tools in cross piercing. Its function is turning a solid bar into a hollow bloom.
顶头是斜轧穿孔主要的变形工具之一，其作用是将实心管坯穿轧成一定壁厚的空心毛管。
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