Profile: SBKJ Spiral Tubeformer is a manufacturer of tube forming and plasma cutting machines. Our TDC flange forming machine is an universal flange making system. It is specially suitable for producing a duct with a large sectional area. The unit consists of a feeding frame, main forming machine and a shearing unit, which includes grinder & hydraulic shearing unit. The hydraulic shearing unit makes fixed cutting available with very little burr, and may be operated automatically with a maximum work speed of 6 m/min.