Since the early 1970s, countless customers in the microelectronic, life science and energy sectors have relied on the quality of our high-purity stainless steel tubes and components. There are good reasons why our tubes, fittings and machined parts can be found in almost every semiconductor fab and pharmaceutical plant.
Our standard products meet the highest requirements for surface quality and purity. They are used in the semiconductor industry, in the pharmaceutical industry, in analytics and in other high-tech industries for the transportation of liquids and gases. Our tubes and fittings meet all common national and international standards and regulations.
Whether bright finished, pickled or electropolished and packaged in our clean room – we have the right product for every application.
Dockweiler tubes and fittings form the foundation for high-purity media supply systems in the semiconductor, pharmaceutical, biotechnology, and analytical industries. Precise manufacturing, defined surface finishes, and rigorous quality control ensure maximum purity and the highest level of process reliability. Combined with Dockweiler surface finishes such as finetron, TCC, TCC.1, and ultron, these components create tubing systems that meet even the most demanding requirements.
In addition to high-purity tube and fittings, Dockweiler also offers a comprehensive portfolio of pipes and pipe fittings for larger nominal diameters and demanding utility applications. These systems are used, for example, in submains, bulk gas supply systems, CFOS plants, process cooling water (PCW) systems, and complex infrastructure projects in the semiconductor industry.
In contrast to conventional tubes and fittings, pipes are specified according to the international NPS system (Nominal Pipe Size) and are designed for larger nominal diameters and higher mechanical loads. Sizing is based on nominal diameter and wall thickness (Schedule), resulting in robust piping systems for high flow rates and industrial supply networks.
Through a combination of high-quality materials, defined surface qualities, project-specific manufacturing, and comprehensive documentation, Dockweiler offers reliable solutions for demanding supply and infrastructure applications worldwide.
Seamless gas supply in proven Dockweiler quality, manufactured for ultra-high-purity applications in the semiconductor industry. Thanks to an electropolished inner surface with Raavg. ≤ 0.25 µm, available up to a maximum length of 30 meters, the need for weld testing in the system and the risk of possible contamination can be minimized. This significantly increases efficiency during installation and safety for the application.
Our standard program of stainless steel tubes and components include the following products.
In addition to the standard programme, we also offer a wide spectrum of special fittings. For special requirements, please refer to the special fittings section.
Our standard fittings are available in the following materials:
Our standard fittings are available in the following international dimension series:
Not every melt meets the high requirements of modern high-purity applications. Even materials with identical material designations can differ significantly in terms of corrosion resistance, weldability, surface quality, and long-term stability. That is why Dockweiler evaluates materials even before further processing to determine their suitability for demanding applications in the semiconductor industry, the pharmaceutical industry, and other high-tech markets.
With our “Selected Alloys” approach, we consider not only material designations but also the melting process, chemical composition, processing behavior, and quality characteristics of each individual melt. Extensive testing and qualification ensure that only selected materials form the basis for our high-purity tubing systems. After all, the highest quality begins with the raw material.
Our expertise in mechanical and electrochemical surface treatments guarantees optimal quality for high-purity industrial applications. In-house knowledge of the core processes is just as important for the finishing as the qualification and selection of the appropriate raw material.
Get in touch with our experts and let them advise you without obligation. We look forward to answering your request.
Pioneer in the development of high-purity surfaces for ultra-pure media supply in the semiconductor industry
The Dockweiler surface qualities Finetron, TCC and Ultron are the industry standard
Specialist in metallurgy and optimization of stainless steel surfaces
Dockweiler provides precisely documented and tested melts to ensure consistently high quality for automated welding processes.
Dockweiler qualities are digitally recorded and enable the traceability of all relevant welding parameters, which facilitates process control and quality assurance.
Dockweiler grades are 100% cleaned before delivery to the customer. This guarantees the highest material and production quality with complete traceability and documented purity.
As a tube supplier, Dockweiler offers "Ultron" and "Finetron" tubes in controlled qualities for system manufacturers in the semiconductor industry. The same applies to the ASME-certified tubes for pharmaceutical systems.
The COAX tube system guarantees maximum process safety thanks to its unique double-walled design. Ideal for the safe transportation of hazardous or highly viscous media in microtechnology and biopharmaceuticals. Find out more about the advantages of the double protective layer.
When standard products are not enough, we offer customized special fittings for your specific requirements. From design to delivery - we make sure that our solutions are perfectly tailored to your needs. Click here to find out more.
Keep an eye on the development of alloy surcharges: Every month on the 1st, we update the values on our website - based on the current prices of alloying elements on the London Metal Exchange.