Model : GDF 20/30
Stand alone roll forming machine with two sides to produce GDF flange 20 and flange 30 with rotary metal stitching.
Forming framework: use the wall type side plate，gear drive。 side wall thickness:30mm
The roll shaft diameter:φ40 mm
Roller material:Cr12MoV，the quenching hardness，HRC58-62°
The GDF flanges are integrally formed from the same sheet as that of the ducts hence the use of sealant is not required along the transverse joints. This is applicable for low, medium and high pressure systems.