Steel and stainless steel tube narrowing
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Steel and stainless steel tube narrowing
What is the process of narrowing steel tubes and stainless steel tubes ? The process of steel and stainless steel tube narrowing (also known as tube diameter reduction or tube pressing) involves reducing the outer diameter of the tube end to fit it to another installation component – e.g., a fitting, sleeve, connector, or another tube with a smaller cross-section. This is a key operation in the processing of tubes used in power hydraulics, pneumatics, industrial installations, heating, or cooling systems.
What is steel and stainless steel tube narrowing ?
Tube narrowing, also called diameter reduction, consists of plastic deformation of the material in such a way that the tube end achieves a smaller outer diameter without losing tightness and strength. This process is carried out cold, which means the tube is not heated – the deformation occurs solely using the force generated by a hydraulic crimping machine. This ensures the material structure is preserved, and the tube end surface remains smooth and precisely dimensioned. Thanks to cold narrowing technology, it is possible to achieve very high accuracy, a perfect fit for connecting elements, and maintain surface cleanliness – which is particularly important for stainless steel tubes.
How does the tube narrowing process work in a crimping machine ?
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The tube is placed in the head of the crimping machine, equipped with an appropriate set of reduction dies.
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The dies close around the tube, gradually reducing its diameter and forming the end to a specific dimension.
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The process is hydraulically controlled, which ensures precision and repeatability of the shape.
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After forming, the tube is ready for further processing – e.g., welding, fitting assembly, or soldering.
Tube crimping machines
Hydraulic crimping machines are used for the narrowing process, which, thanks to high pressing force, allow the forming of steel, stainless steel, and aluminum tubes without the risk of cracks or deformations. Hydron, as an official representative of the SAMWAY brand, offers professional tube and hose crimping machines that: enable accurate and repeatable narrowing of tube ends, operate cold without the need to heat the material, ensure fast and safe work, and are available in manual, electric, and hydraulic versions. SAMWAY crimping machines are used not only in workshops and services but also in production lines where precision, repeatability, and speed of operation are crucial.
Steel tube crimping hydraulics
Steel tube crimping is a proven method of permanent tube end forming used in power hydraulics installations, high-pressure systems, and industrial systems requiring maximum tightness. This process allows for precise adjustment of the tube diameter to a fitting or sleeve, without weakening the material structure. In practice, steel tube crimping very often complements services such as steel and stainless steel tube narrowing available in the Hydron offer, which allows preparing a complete element for installation. Steel tube crimping offered by Hydron is used both in the production of new installations and during repairs and modernizations of existing systems. Most often, this process is performed on precision steel tubes and stainless steel tubes, which then work with hydraulic fittings used in construction, agricultural, and industrial machinery. Thanks to the proper preparation of the tube through crimping, it is possible to achieve tight and repeatable connections that meet the technical requirements of modern hydraulic systems.
Strength tests of narrowed tubes at Hydron
At Hydron, we perfectly understand that purchasing a tube processing machine is an investment that must be carefully considered. Therefore, we offer our customers the possibility of performing tube narrowing trials before purchasing a crimping machine. You can send us a sample of your tube, and we will conduct a test narrowing on the appropriate crimper model. We will perform the test under working conditions and record a video of the entire process so that you can see how the machine works with your material. Thanks to this, you can be sure that the device will be fully useful and tailored to your needs. Additionally, there is the possibility of personally visiting our headquarters, where you can conduct trials yourself under the supervision of our technical team. During the visit, we provide: access to various models of SAMWAY crimping machines, practical tests with your tubes, professional technical advice regarding the selection of the machine and accessories.
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