Pipe grinding machines

Efficient solutions for precise pipe grinding

Optimize your production processes with our tube grinding machines and achieve maximum precision and efficiency!

Our pipe grinding machines ensure perfect surfaces, precise contours and clean edge processing for pipes and round materials. Thanks to their innovative technology and robust design, they are versatile and guarantee consistently high quality.

The simple operation and numerous configuration options enable the processing of a wide range of pipe dimensions and materials. With precise grinding and high reliability, our machines meet the requirements of modern production processes and sustainably increase your productivity.

Pipe grinding machine with sanding belts & sanding system.
ML series

Easy grinding of pipes.

Wet pipe grinding machine. Machine with FIlterstation & feed unit.
MLW series

Wet grinding of pipes

Tube polishing machine with feed unit.
MP series

Rorhe polish & mirror polish.

Multi-station pipe grinding machine MLW 100 3Z.
ML/MLW Z series

Automated pipe grinding & polishing.

How can I help you? I will be happy to answer your questions personally.

André Pereira
Managing Director
Phone: +49 7267 45 198 11
E-mail: apereira@permatec.net

I look forward to your inquiry!

Advantages of our pipe grinding machines

ML 100 pipe grinding machine for grinding bent pipes.
  • Convenient pipe feed
    The optional feed unit enables uniform, efficient pipe feed – ideal for series production. The feed speed can be individually and continuously adjusted via a potentiometer for maximum control and adaptation to the material and sanding task.

  • Change the sanding belt in seconds
    The sanding belt can be changed in just a few seconds: A foot switch unlocks the sanding wheel, while the ergonomic clamping device enables the sanding belts to be changed quickly and without tools. This minimizes downtimes and increases productivity.

  • Precise diameter adjustment
    The pipe grinders from NS Máquinas are equipped with an easy-to-read scale for precise adjustment of the grinding diameter. Individual areas can be ground in a targeted manner – thanks to the foot switch control, the grinding belts can be opened without having to pull the pipe all the way through.

  • Uniform surface finish
    In contrast to manual belt sanders, our machines deliver a consistently uniform sanding pattern over the entire length of the pipe. The result is a homogeneous, professional surface finish – perfect for visible stainless steel pipe constructions.

The technology of our pipe grinding machines

Grinding station ML/MLW
Pipe grinding machine drive

The specially developed planetary grinding technology from NS Máquinas enables precise grinding of both straight and curved pipes – without pipe rotation. The workpiece diameter can be set quickly and without tools using a quick clamping system. The tube is then simply and safely inserted manually into the grinding station – ideal for efficient one-off and series production.

MP polishing station
Tube polishing machine drive

The newly developed planetary polishing technology from NS Máquinas makes automated tube polishing even more efficient. Three orbitally rotating polishing wheels move evenly around the workpiece and produce a homogeneous finish – even with challenging geometries. The machines in the MP series also have an automatic dosing system for precise application of the polishing paste, which ensures consistently reproducible results and minimizes manual work steps.

Multi-sanding station ML/MLW Z
Drives for several pipe grinding stations.

The ML / MLW Z series multi-sanding stations enable the integration of up to six individually configurable sanding modules in one line. This allows all processing steps – from pre-grinding to fine grinding and polishing – to be carried out in a single, continuous operation. This not only increases the processing speed, but also ensures reproducible results with consistently high quality.

Request a quote

Do you already have a concrete idea of your desired configuration?
Simply let us know your requirements and we will prepare a customized offer for you.

Pipe abrasives for all applications
Pipe grinding machine with sanding belts & sanding system.

Abrasive cloth belts

Abrasive cloth belts from grit 20 to 400 in various designs.

Abrasive fleece on pipe grinding machine

Non-woven abrasive belts

Coarse to very fine non-woven abrasive belts in various designs.

Polishing wheel for tube polishing machines.

Polishing wheels

Polishing wheels and polishing soap in various designs.

Result Pipe grinding machine

No matter what requirements you have for your sanding application – we offer you abrasives that can be flexibly adapted to your needs. With our high-quality abrasive cloth belts in all grit sizes, non-woven abrasive belts such as Scotch-Brite, polishing discs and polishing soaps, you can process your workpieces efficiently and achieve perfect results. Our products are suitable for both standard applications and demanding special projects. Manufacturer-independent and of the highest quality, our abrasives support your processes, increase efficiency and ensure an optimum surface finish.

Sanding applications & examples
Pipe grinding machines with robot automation
Pipe grinding results
Tubes polished with the MP 100.
Bundling station for pipe grinding machines
Pipe grinding machine with several stations, touch display and filter unit.
EXPERIENCE MACHINES LIVE

in our showroom

Showroom for pipe grinding machines.
FAQ: Answers to the most important questions
What are pipe grinders needed for?

Tube grinding machines are used for processing, grinding and polishing tubes and cylindrical workpieces. They perform numerous tasks in various industries, including metalworking, furniture manufacturing and construction. The main applications include:

  1. Surface treatment:

    • Improvement of the surface quality, e.g. for decorative purposes.
    • Production of even, matt, brushed or polished surfaces.
  2. Deburring:

    • Removal of sharp edges, burrs or unevenness after cutting or welding.
  3. Preparation for coatings:

    • Creation of an optimum surface for painting, coating or powder coating.
  4. Tube forming and precision:

    • Achieving precise diameters or shapes through uniform material removal.
  5. Cleaning:

    • Removal of rust, oxidation layers or residues from pipes.
  6. Weld seam processing:

    • Smoothing of weld seams to level out transitions and improve strength and appearance.

Pipe grinding machines are particularly advantageous as they adapt to the cylindrical shape of the workpieces and can deliver efficient, uniform results on long or curved pipes. They are often used in stainless steel processing, railing construction and industrial plants.

The use of a pipe grinding machine is worthwhile if certain requirements and conditions are met during operation. Here are some important aspects that indicate that its use makes sense:

  1. Large quantities
    If large quantities of pipes need to be processed regularly, a pipe grinding machine is more efficient and time-saving than manual processes.

  2. Consistent surface quality
    If a uniform surface finish or a specific finish is required (e.g. for stainless steel pipes), the machine offers significantly more precise results.

  3. Complex geometries
    For pipes with different diameters, bends or hard-to-reach areas, a specialized pipe grinding machine can achieve better results than manual processing.

  4. Increasing productivity
    If production is to be increased without compromising quality, the machine can optimize processes by automating machining.

  5. Reduction in reworking
    A pipe grinding machine can ensure that less reworking is required, which reduces labor and material costs.

  6. Occupational safety and ergonomics
    If manual processing is stressful due to noise, dust generation or ergonomic reasons, a pipe grinding machine improves working conditions.

  7. Economic consideration
    The use is worthwhile if the costs of purchasing, operating and maintaining the machine are justified by the increased efficiency and quality.

Examples of typical areas of application:

  • Metal processing: stainless steel tubes for railings, furniture or mechanical engineering.
  • Metal construction: processing of pipes for construction projects, e.g. railings or supporting structures.
  • Automotive industry: surface treatment of pipes for exhaust systems or frame structures.
  • Medical technology: Dust-free stainless steel or nitinol tubes, e.g. for stents.

A pipe grinding machine is used to grind and polish pipes and round steel. It usually works with a system of abrasive belts that are guided by rollers. There are both stationary and hand-guided versions. In addition to grinding, a pipe grinding machine can also be used for satin finishing and polishing pipe constructions.

Some models, such as the ML100 from NS Máquinas, use a planetary sanding system. The sanding belts rotate around the pipe while it is being transported in a straight line, without the pipe itself rotating. This reduces the frictional heat on the surface of the pipe and enables even processing.

The operation of a sanding machine is generally based on the rotating or oscillating use of sanding tools that remove material from workpieces. This process is used to smooth surfaces, process edges or achieve certain shapes.

In summary, a pipe grinder works by using abrasive belts that rotate around the pipe and remove material to create a smooth and polished surface.

Our pipe grinding machines are suitable for a wide range of materials, including:

  • Stainless steel: Perfect for polished and satin surfaces.
  • Aluminum: For precise and gentle processing of soft materials.
  • Steel: Ideal for deburring and smoothing sharp edges.
  • Brass and copper: For a glossy finish and precise edge processing.
  • Plastics: Suitable for special applications with sensitive materials.


Thanks to the adaptability of our machines, they can be easily adjusted to the specific requirements of different materials to achieve optimum results.

The pipe grinding machines are manufactured by NS Máquinas near Porto in Portugal. The company develops and produces high-quality machines for grinding and polishing pipes and for metalworking. NS Máquinas has been offering quality machines in the areas of grinding, deburring & polishing for over 20 years.