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U-bends - also known as squeezed or pressed bends - are shaped pieces for welding on
U-bends are pre-bent cold and then pressed into the die in two axes while hot by means of a stuffed sand filling. The side lengths are variable from approx. 200 mm to 1,000 mm. The starting material is seamless steel pipes.
Strictest testing processes assure quality
They are manufactured in the materials and available die dimensions required by the customer.
We produce U-bends of different pitches with a bend angle of 180°
Table of U-bends
Delivery is mostly with fitting lengths on the pipe ends. Any required joint shape and matching of the pipe inside diameter is in line with EN 29692 "Edge preparation for welding".
The pipes must be supplied in a material condition corresponding to the starting material. Any required normalisation of the material is carried out after the hot forming in the die by our own personnel.
Testing of the formed area for the wall thickness distribution and internal defects is performed by means of ultrasound among others. For surface crack inspection, the dye penetration or magnetic particle method is used. The inside surface of the pipe is inspected with the aid of endoscopes. The appropriate tests must be agreed. In each case, a ball passage test is carried out as per VGB 501.