马钢一号(单流试验机)和二号(双流工业生产机)水平连铸机拉成为Φ80mm圆管坯,经几家无缝钢管生产厂使用结果证明,用水平连铸坯代替轧制坯生产无缝钢管是完全可能的。在水平连铸坯的检查中发现一些质量缺陷,现归纳如下,冀望引起管坯生产的钢管 Magang No. 1 (single flow testing machine) and No. 2 (Shuangliu industrial production machine) horizontal continuous casting machine pulled into Φ80mm round tube, the use of several seamless steel pipe plant proved that the use of horizontal slab instead of rolling Parison production seamless steel pipe is entirely possible. In the inspection of the level of continuous casting found some quality defects, are summarized as follows, hoping to cause the production of steel tube