Production of tube and profile assemblies

We engage in production of tube and profile assemblies from various metals such as steel, stainless steel, copper and aluminium. Apart from tube and profile bending we also perform cutting, forming, welding, brazing, pressing and degreasing of them. Our activities also include forming of tube ends.

We also offer various product finishing operations such as chrome plating, galvanizing or powder coating. Our particular strength is production of small and medium-scale series with a tube diameter of 6 mm to 65 mm and profile measurements of up to 70 x 50 mm. Our products are in particular used by leading companies (OEM) in the automotive and medical industries, as well as those in the field of heating, cooling and sanitary technology.

We create state-of-the-art technical solutions for all industries.

Boltjes Group produces individual parts, sub-assemblies and assemblies for the heating, automotive, sanitary and medical industries, where components for hospital beds or wheelchairs for disabled people are involved. Companies engaged in the field of heating technology and industrial cooling have been approaching us for several years with enquiries about tubes for central heating – a new area is the dynamic heat pump sector. Boltjes Group is the right partner for you in the field of tube processing.

We produce components for the automotive industry, which are part of state-of-the-art cooling systems in BMW e-cars and Volkswagen platforms. Other examples are steel tube segments for AUDI, components for BMW X-series vehicles, pressed dashboard profiles for Rolls-Royce cars, aluminium damper bodies for TESLA and brake Bowden-cable tube segments for the MINI COOPER brake system. A chapter in its own right is constituted by all of the tube components for BMW motorcycle frames. It is very likely that parts delivered by Boltjes Group have been used for production of your car.

Tube bending

Thanks to our long-term experience in this field, Boltjes has developed a wide range of international clients. We bend tubes in small and medium series according to our client’s specifications. Feel free to contact us not only with your requirements regarding 2D and 3D bending, but also with requirements for high-precision bending of different shapes.

We have the following bending (CNC) machines at our disposal:

Complete list

Tube and profile cutting

Thanks to our long-term experience in this field, Boltjes has developed a wide range of international clients. We bend tubes in small and medium series according to our client’s specifications. Feel free to contact us not only with your requirements regarding 2D and 3D bending, but also with requirements for high-precision bending of different shapes.

We have the following bending (CNC) machines at our disposal:

Complete list

Tube forming and tube end forming

Here are a few examples of tube end forming which we can offer you:

  • flaring,
  • narrowing of tubes and profiles,
  • chamfering,
  • roll-beading,
  • reducing and drilling (T-drill/Flow-drill).

We have the following machines for tube end forming at our disposal: 

Complete list

Tube brazing

Thanks to long-term cooperation with large international companies engaging in the field of heating technology and industrial cooling, Boltjes Group has acquired extensive experience in the field of copper, steel, stainless steel and aluminium tube brazing. We are able to perform tube brazing using the brazing methods mentioned below (manual or automatic brazing).

Manual brazing

Brazing with compressed oxygen/natural gas with priming of liquid flux; we use this method to braze parts with more complicated shapes and to process job orders with a small number of units. In addition to this, we are able to braze tubes and pipelines with phosphorus and silver.

Automatic brazing machines: 

Complete list

Profile bending

Apart from tube bending, Boltjes Group is your partner for profile bending as well. We possess extensive experience in this field and have implemented several projects for the automotive and medical industries. Rectangle profiles for lorry fuel tank brackets are one example of this.

Our employees possess the latest knowledge and we use state-of-the-art (CNC) machines for profile bending. We are able to bend rectangular or square profiles up to 70 x 50 mm in a wide range of required radius. Generally, this process is very similar to bending of a round tube but it requires a unique design of bending tools including a segmented inner mandrel in order to prevent deformation. We commonly use 2D profile bending. 3D profile bending is also possible, however, this requires a more detailed and complex technological procedure. Furthermore, technical possibilities are limited in comparison to 2D bending.

However, tube and profile bending is only one of our specialties. We can also offer you a complete package of services such as milling, pressing, trimming, hole-punching, welding and also final inspection.

Our strengths are:

  • processing of a wide range of materials such as steel, stainless steel, copper and aluminium
  • an established and maintained quality management system and certification in line with ISO 9001 and IATF 16949
  • long-term cooperation with important customers including technical support for creation of product designs
  • state-of-the-art machine technologies
  • the latest and continuously growing knowledge and experience of our staff
  • support provided by an in-house technology department

Tube welding

We perform tube welding using the methods mentioned below (manual or automatic), we weld steel, stainless steel and aluminium. We perform tube welding using the methods mentioned below (manual or automatic), we weld steel, stainless steel and aluminium.

Manual welding

Welding using MAG/MIG and TIG welding methods

2 welding robots

  • Yaskawa Motoman MA1900 and Motoman Benelux RM2 – 250 STX
  • Welding using MAG/MIG methods, rotary table, 2 positions: operation / preparation

Product degreasing and cleaning

Boltjes Group offers several types of surface treatment such as galvanisation, chrome plating, CDC or powder coating.

In addition to this, Boltjes Group also ensures the cleanliness of supplied parts by means of ultrasonic cleaning and degreasing of products, for which the following machines are used:

  • Summa Atol 825
  • Suma Atol 610
  • Summa WIR 4H-900/OSK