Production quality welding studs

Production competence. Blow by blow.

We keep control of almost all the steps in the production process. This is how we can deliver the OBO quality our customers expect from us. The basis for this is the comprehensive knowledge of our cold forming experts, gained in daily practical work.


Production quality welding studs Production quality welding studs


Development and tool construction
Precise tools are required for the production of our welding studs. They range from matrices through dies to pins made of tool steel and carbide. We develop and design each individual tool ourselves. Special coatings are also used, allowing the processing of wires with an extreme surface hardness. After production by renowned manufacturers, the tools become the core of the presses and rollers of our production facility.


Production competence. Blow by blow.
Large forces are involved in each pressing operation in production. Only in this way can the materials be formed when cold. Thus, within a very short period of time, wire becomes a welding stud. Brief successive impacts. That is the “sound” of the production facilities. You can hear speed and precision.
Thanks to a closed production process on our premises and with our partners, we can guarantee the highest level of quality in every work step.


Production quality welding studs Production quality welding studs
Production quality welding studs Production quality welding studs


A total of 15 pressing machines are used in OBO´s product facility. They range from the double press, through the rotation press with a speed of more than 400 units per minute, through to the 5-level press. All the machines were made by renowned manufacturers such as Salvi, Sacma, Hilgeland and National.

After pressing comes rolling. Here too, OBO, with nine thread rolling machines for external threads, is well situated. It doesn´t matter which thread is required – the product range runs from standard threads to special threads between M3 and M12. Even during the rolling of the cold-formed parts, no cutting processes occur. The internal thread is formed with a non-cutting method. This means that no shavings can get trapped in the drill hole.

Hardening and surface treatment
Depending on the area of use, refinement of the fastening elements is required. The products are subjected to heat treatment, according to the desired
resistance class. Joint operations with highly specialised hardening and galvanising shops within a radius of 50 km mean that all kinds of refinement steps are possible.

The produced articles can be annealed, hardened or tempered and, in the field of surface coatings, can be alloyed with zinc, zinc/nickel or zinc/iron, or also copper-plated. Stainless steel parts are additionally pickled.


Production quality welding studs Production quality welding studs


Shipping applications
We dedicate extra-special care to the last step, before we ship out our welding studs: After the camera-supported final check, we pack and seal the studs fully automatically in plastic bags. This means that we can guarantee that they reach you in a dry and undamaged state – just like they left our production facility.


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