For pipeline and tank construction

As a system provider, we also offer you the right accessories for pipes and fittings, including flanges, nuts and bolts, gaskets and matching fittings directly from stock.


Data sheets, operating instructions and the CAD data for the article in STEP format can be found directly with the respective article or in this tool for downloading.




Order the matching connection sets for your flange connection at the same time. NieRuf can supply you with stainless steel or steel connection sets.


For industrial valves and measurement technology

Supplies for pipeline construction

Safety for humans and machines: A reliable, durable connection between pipeline and valve or between two pipes is essential for the safety of the application. After all, a defective connection could cause serious damage. Thus, choosing the right high-quality connection and supplies for pipelines and container construction is crucial. Also, care is required when assembling the pipeline. That's why NieRuf offers only high-quality fittings, connections, seals and flanges.

There are two basic types of connections in pipeline construction. Either, valves and pipeline are connected using flanges, or using threads (internal or external threads). No matter which connection type you go for, supplies for pipeline constructions come in useful. Siphons can be used in a variety of applications and help to release and control pressure in both containers and pipelines.

Equipment: Flanges and flange gaskets for flange applications

Pipelines that are connected by flanges and valves that need to be flanged, require a flange gasket. Otherwise, the media could leak and damage the surroundings. Flanges can be connected with the pipeline using a thread or welding. Two flanges can then be connected using the pre-drilled holes, screws and nuts. All flanges and holes are made according to EN1092-1. NieRuf offers a variety of flanges in different nominal sizes, screws and nuts of all sizes as well as matching washers.

Thread fittings, cross fitting, t-fitting, angles and nipples

Which pipeline needs which screw? With pipelines that are connected using an internal or external thread, a variety of screw connections can be used. No matter which one you choose, a teflon sealing tape should be added. Classically, a screw connection with two internal threads or a double nipple with two external threads is used to connect two pipelines. A plug can be used to shut off the end of the pipeline.

Angles are used to change the direction of the pipeline by 45° or 90°. A t-fitting can be implemented to connect three pipes, while using a cross-fitting allows you to connect four pipes. The reduction nipple has two external threads, which allows you to change the connection size (nominal size), thereby enabling you to connect e.g. a ½“ pipe with a ¾“ pipe. The reducing fitting can be used in the same way as the reduction nipple, but comes with one internal and one external thread. A pipe fitting with two external threads can be used to extend a pipeline.


There for you

Special requests, spare parts or a quick support? Our staff will answer your questions and concerns immediately.

You can reach us from Monday to Friday at +497143 9666900 and any time at



Our certified quality management according to DIN EN ISO 9001: 2015 is part of our DNA. With our test stands we can carry out pressure tests with up to 350 bar with air and water as well as leak tests according to DIN EN 122661.

This is NieRuf


Commitment engenders trust. We stand by our word and are convinced that as a result not only our customers but also everyone we work with can rely on us.


We always strive to find the best solution for our customers. It is our goal and incentive to have completely satisfied customers.


Technical and commercial expertise form the basis for developing qualified solutions tailored precisely to the needs of our customers.


We do not adhere to rigid guidelines but instead focus on the individual wishes and needs of our customers. They are more important to us than internal company processes.



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+49 7143/9666-900

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Need help?

If you have any questions, we are available by phone from Monday to Friday from 8:30 a.m. to 5:00 p.m.

order via mail:

07143 / 96669 - 00