Analysis and process control on inclusions of tube billet;

20G tube blank steel is produced by the 100t UHP-EAF in NISCO, which can meet demand of market through a lot of measures such as refining raw material, standardizing deoxidization technique, optimizing argon-bubbling treatment, selecting the best water distribution model in second-cooling zone, adopting low overheating degree casting, controlling drawing speed and rolling temperature and so on.

20~# tube blank steel is produced in the special steel plant of Laigang, with 50tUHP EAF, LF refining, bloom continuous casting, semi-continuous mill short route instead of the original die cast.

Effect of Ingredient of Refining Slag on Cleanliness of Tube Blank Steel SA-210C;