Pipe Marking

Pipe marking according to ISO 20560-1 standard

The main purpose of the ISO 20560-1 standard is to create an international standard that replaces the variety of regulations within different countries and regions. The use of basic identification colours and (warning) symbols will help to identify the pipeline contents and any hazards more quickly.

Installing pipe line marking with clear and universally recognisable formats is essential to global and local safety and maintenance.

The key points

Factors such as chemical type (category), pipe diameter and flow direction determine the style and format of pipe marking.
The basic elements of a pipe marker

An Industry Standard pipe marker consists of 4 basic elements:


1. Basic identification colour
2. Name of the substance/content
3. Flow direction indicators (arrows)
4. Warning symbols, GHS symbols (or both)

Hazardous substances Alkalis
Gas (liquid or gaseous) Fire fighting medium
Liquids & solids (powder/granulate) Water
Acids Air
Substance categories in colour (basic I colours)

A significant benefit of the ISO 20560-1 standard is the establishment of basic identification colours, the colour coding will be used worldwide. This is essential for both industry and emergency services

There are 3 different sizes of pipe markers where the width of the basic identification colour is determined by the diameter of the pipe.

Pipes up to 150mm

The basic identification colour of pipes up to 150 mm in diameter must be at least 85 mm wide.

Pipes from 150mm ~ 500mm

The minimum width of the basic identification colour of pipes with a diameter of 150mm ~ 500mm is 120mm.

Pipes from 500mm

For pipes with a diameter of 500 mm or greater, the minimum width of the basic ID colour is 200 mm.

Other guidelines and rules

There are a few additional guidelines that determine the layout, positioning and visibility of a pipe marker.

• The minimum letter height is 7mm and symbols must be at least 20mm high

• The minimum height of the flow indicator (arrow) is 10mm

• Pipes that are visible on two sides require (pipe) markings on both sides

• Pipe markings should be placed at key locations such as junctions, valve breaks and branch points, on both sides of walls and other zone boundaries and at the beginning and end of pipe racks etc.

More details can be found on the official ISO 20560-1 website: https://www.iso.org/standard/71570.html

Print your own pipe marking or order ready-made?

We offer various solutions for pipe marking including printers that allow you to print all the pipe marking you need yourself, in single or multiple colors. You can use our exclusive SMS-R1 Pipe marking software to easily and quickly print all pipe markings according to the ISO 20560-1 standard. Would you rather order ready-to-use pipe markings? That’s possible too!

The ideal pipe marking printer

When it comes to pipe marking, the SMS-R1 is the most advanced and easy-to-use system.
 With this printer you can produce pipe markers at high speed, in multiple colors and various sizes.

To make printing pipe markers as easy as possible, we have developed an exclusive Pipe Marker application that allows you to effortlessly print pipe markers that are fully compliant with ISO 20560-1:2020 standards.

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      Rebo’s unique pipe ID print application

      With the exclusive Pipe Marking application for the SMS-R1, producing your pipe identification is now even easier!
      Print your pipe line identification completely according to ISO 20560-1 standards.

      • Print the 3 standard sizes
      • Manage the substance database
      • Flexible flow indicators
      • Determine the style of symbols and flow indication arrows
      • Add additional text(s) as desired
      • Print up to over 10 meters in a single process

      Easily manage the inclusive chemical database by adding new substances, changing existing substances or deleting them.
      As soon as you know which pipe has to be marked, you can easily choose the right size of marker within the application.
      Choose from flow direction indicators with or without background colour and determine the background colour of the symbols yourself.
      Do you want all pipe markers with the same flow direction or with variable flow directions – it’s easy using the application.
      GHS and warning symbols are very easy to find with the help of the pictograms legend.
      Use the additional text field to add specifications, instructions and other/extra information to your markers.

      Download the free demo version!

      Don’t have an SMS-R1 yet but want to try the software without any obligations? Download the demo with almost full functionality.

      Edit, delete or add substances
       Decide the flow direction, stijl and size
      Clear print previews
      Choose from 12 languages
       Try it out without time limit

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        Technical requirements

        The demo is suitable for Windows and requires installation of these components:
        • NiceLabel PowerForms (versie 2019.3 or higher)
        • SMS-R1 printer driver (versie 18e or higher)
        • Microsoft Access Runtime (versie 2013 32bit or higher)

        Print standard pipe markers

        An alternative standard for pipe marking is to print on a continuous tape roll, where the tape colour and ribbon colour together form the correct colour combination.
        Continuous tapes are available in various colours and in standard widths of 15mm, 30mm, 60mm and 100mm and are cut to the required length by the printer.

        For printing pipe markings in a single colour, we recommend an SMS-430 label printer or a portable TORO label printer.

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          Request a free demonstration

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          FREE SAMPLE PACK

            Request your free sample pack!

            Please fill in your details below so we can ship your sample pack!


            Desktop and Portable printers for easy pipe marking

            SMS-430
            • Print up to 104mm wide
            • 300 DPI print resolution
            • Automatic cutter
            • USB & LAN connection
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            TORO
            • Print up to 101mm wide
            • 300 DPI print resolution
            • Portable & IT independent
            • USB-A & USB-B connection
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            Order ready-made pipe markers

            Pipe marking tape on a roll

            For large projects, such as the layout of a new factory or building, our pre-printed pipe markings on rolls are an ideal means of saving costs and time.

            Our pre-printed rolls are laminated against UV rays and chemical influences and are self-cleaning, flexible and water-repellent.

            Do you need help with your project? Our advisors are ready for you!

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              Arrow tape

              You can emphasize and clarify the flow direction of a pipe using our arrow tapes.

              The arrows tape comes in rolls and is available in various colors and sizes.

              Are you curious about the possibilities? Feel free to ask us what we can do for you.

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