Feature: It is mainly used for the processing and forming of the stitched joint of the elbow of the circular air pipeline. The circular air duct is formed by one flanging and stitched by the second butt bite. It has the advantages of good forming effect, high efficiency and simple operation. The equipment is equipped with two workstations, which avoids frequent tool replacement during the use of the equipment and improves production efficiency. Suitable for processing sheet thickness 1.5mm galvanized sheet, 1.0mm stainless steel. The roller and accessories are made of high hardness steel, which is processed by reasonable production technology to ensure the stitching quality. Feature: It is mainly used for the processing and forming of the stitched joint of the elbow of the circular air pipeline. The circular air duct is formed by one flanging and stitched by the second butt bite. It has the advantages of good forming effect, high efficiency and simple operation. The equipment is equipped with two workstations, which avoids frequent tool replacement during the use of the equipment and improves production efficiency. Suitable for processing sheet thickness 1.5mm galvanized sheet, 1.0mm stainless steel. The roller and accessories are made of high hardness steel, which is processed by reasonable production technology to ensure the stitching quality.