- Suitable for a wall thickness of up to 150 mm
- Pre-bending of conical shell sections is possible
- Deflection compensation over the entire pre-bending length of 4 m
- Automated positioning device for the plate handling during the pre-bending process
In the production of LSAW pipes and pipe sections, the Graebener® pre-bending presses carry out the first bending step of the steel plates. The plate edges are pre-bent prior to the downstream bending process so that the straight plate ends of bent pipes are reduced to a minimum.
Based on our many years of experience as former manufacturer of LSAW pipes we offer customized pre-bending solutions as special machine builder. Depending on the type of application and your individual requirements we use two different methods of pre-bending: in case of plates with a wall thickness of 150 mm both plate edges are pre-bent subsequently over the entire plate width. In case of plates with a smaller wall thickness of up to 75 mm a step-by-step process is used where both plate sides are pre-bent simultaneously in several steps throughout a length of up to 20 meters.
up to 4.3 m
up to 150 mm
Individual plate weight:
up to 70 t
Graebener® pre-bending machines are no standard solutions. Over decades we have been specializing as manufacturer of customized machines following the ever-increasing quality requirements of pipe respectively wind tower production. Our machines are customized to your requirements and designed for the applied materials and quality classes. Our mission is that your Graebener® machine makes you better. Irrespective of whether you invest in a new Graebener® machine or whether you choose a Graebener® retrofit solution.