Current label: Tangshan reliable square tube manufacturer
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Production and manufacturing of square tubes: many defects of square tubes are formed in the process of piercing, so the piercing process of tube blanks is the key process of consuming square tubes. The main difficulty of high alloy piercing is the low piercing performance. In order to ensure the quality, it is necessary to rationally select the deformation parameters of piercing. A small tightening amount will cause instability in the perforation process, so the critical tightening amount per hour should be the first tightening amount