Tube Processing
We are exceptional talents when it comes to working on something.
Drilling & tempering
We not only produce tubes in a wide range of dimensions and grades. We also process them so that they are ready for use. From corrosion protection and internal galvanizing, to single tube and layer sawing as well as short piece production, we make tube products safe and reliable for purpose. For a wide range of applications in the automotive, energy and industrial sectors.
We also develop
our own processes
For example for special surface coatings. We introduced these to the market long before the CrVI exemption was enacted. These make their mark with our customers because they make our pipes even more corrosion-resistant and particularly environmentally friendly. In this way, we help you meet environmental regulations and ever-stricter corrosion protection requirements.
When it comes to processing tube,
we are exceptional talents
For sure.
With our directly formed tube components for airbags you save production steps and, potentially, intermediate suppliers. We´ve been producing these at our plant in Schloss Neuhaus, Paderborn, since 2020 and delivering them directly to our customers´airbag plants. First, however, the components undergo a comprehensive test. After all, airbags are among the most important safety components in a vehicle and are subject to strictest safety requirements. To meet these, we have specially developed a non-destructive testing method for formed short pieces.
The 100% final inspection is integrated into the process sequence. That´s how we make mobility safer.
Processing options
Surface coating
Corrosion resistant and organicAt 80 meters long, our large-diameter tube galvanizing facility is one of the five largest of its kind in Europe. This facility allows us to offer you an extended range of dimensions from our in-house galvanizing process. We galvanize the outer surfaces using four continuous galvanizing lines and, of course, we also specialize in internal galvanizing of straight and coiled tube.
But we take corrosion protection even further: After the Chromium VI-free coating, we can apply an additional sealant or organic topcoat, whether the tubes are seamless or welded. This makes our surface coating particularly eco-friendly. For optimal corrosion protection, we’ve even developed a special galvanizing process—the BENTELER Titan Galvanizing Process.
It’s the perfect foundation for all products in the ZISTA product family.
Airbag components
Tested and definitely safeWe are constantly striving to improve. That's why we excel in airbag component processing. We machine our precision steel tubes for airbags to the closest tolerances. When needed, we also handle tasks like punching, stamping, drawing, or end machining. Additionally, we manufacture ready-to-assemble sleeves for airbag generators. But we don’t stop there—our integrated 100% component inspection ensures consistent quality in our tube components. You can rely on that.
We make tubes perfect
In our fixed-length centersPrecision tubes call for precision machining. In our short fixed-length centers, we saw all pipes to any desired length – with our various high-performance automatic saws, single tube saws and layer saws. Very precisely and to tightest tolerances. Afterwards we deburr and clean the tubes. But we’re also masters of defined end processing. This includes the facing and chamfering of tube ends, laser contour cutting and hole punching.
Our tempering
Special applications, special processesSome applications require tubes with high strength and notch impact strength against plastic deformation as well as against crack growth and breakage. This is provided by our targeted heat treatment, which enables us to achieve a very special strength. Our material expertise is also seen in the quenching and tempering of pipes. To achieve this optimally, we operate our own tempering equipment at many of our locations. In our plants in Schloss Neuhaus and Dinslaken, for example, we heat tubes in an induction process and then cool them down in a controlled way.
Deep drilling for high quality
With us, it’s standardExcellent cylinders call for excellent tubes. The be-all and end-all of cylinder tubes is their high-quality surface. Especially internally. And the closer the tolerance the better. But we probably don’t need to tell you that. What might interest you, though, is that we reduce internal roughness and create tolerances even up to H9. To do this, we skive the inner surface of our pipes after skiving and roller burnishing. Our team works continuously to achieve this. Just like our deep hole drilling machines, which make time-consuming swarf removal strokes superfluous. The result is impressive.
Hollow shafts for vehicles
Best after our prefabricationOur tubes are frequently used in the automotive industry. A high level of materials expertise and technological excellence ensure reliable results, particularly in tube processing. This allows us to draw in the tubes at the ends for drive shafts. At our Rothrist site, we do this exactly according to drawings and the requirements of our customers. The tubes for camshafts, in turn, are partially induction hardened by us at the bearing points of the shaft, exactly where the camshaft is subjected to particular stress during operation. We can also mill and chamfer tube ends and drill small holes or grooves. Here, too, we understand our work like no other.
