TDF flange machine can be divided into three types according to the working requirements: single type T-12 and T-15, duplex type 2-T-12. Single type machine like T-12 and T-15 can form flange edge at one side and crispening edge at the other side; duplex type like 2-T-12 can form flange edge at both sides simultaneously to improve efficiency and save time. Additionally, the duplex type can form flange edge or crispening edge outside at either side. The roller of T-12 TDF flange forming machine is processed by fine turning of No. 45 steel, with high hardness and durability; The roller of T-15 TDF flange forming machine is made of bearing steel by fine turning and quenching. The roller has high strength and it is easier to process plates with a thickness of 1.5mm.