Abstract: Described in the article are the respective features and application scopes of Assel pipe mill and Accu-Roll pipe mill,focusing on comparison and analysis of the advantages and disadvantages of the two mills. Accu-Roll mill features high speed-rolling of light wall tubes with comparatively stable rolling process. Both mills are capable of producing tubes with high accuracies. However in case of Accu-Roll mill,tube quality is sometimes weakened owing to the guide discs,and consumptions of both the disc and the roll are high,and changes of these two parts are also time-consuming. Assel mill features less total equipment weight,lower initial investment and shorter cost-earning time period. Thus it is concluded that the overall performance targets of Assel mill are better than those of Accu-Roll mill.