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试验研究了在周期式轧管机组上用斜轧穿孔取代水压冲孔和延伸的可能性,并进行了在斜轧穿孔机上用钢锭直接穿孔试验。
The possibility of replacing the hydraulic punching and extending with the cross-piercing perforation on the periodic pipe-rolling mill was studied and the direct piercing test on the cross-piercing piercer was carried out.