Skip to content
Request a quote
The Sanwa workforce, in blue work uniforms, standing in rows outside the plant.

About Sanwa

Three decades
of grit.

Sanwa Diamond Tools has made diamond cutting tools since 1994. Today over 200 people in our two factories make tools for construction, stone and industry, and we export to more than 15 countries.

The Sanwa workforce, in blue work uniforms, standing in rows outside the plant.
Quality and R&D

Made in our own factories, checked at every step.

  1. We test raw materials from trusted vendors, and check diamond quality, shape and powder morphology in our R&D lab.

    A technician looking through a bench microscope at a yellow and silver diamond blade.

  2. We sinter segments on Dr Fritsch machines from Germany.

    A hot press with a glowing orange die window, and trays of segment moulds on the bench beside it.

  3. We laser weld segments on Dr Fritsch machines.

    An operator at the touchscreen of a green Dr Fritsch LSM 160 laser welding machine, the nameplate legible above the panel.
    Sparks spraying from a laser welding head as it runs a weld along the rim of a blade.

  4. Our quality control team checks every stage, from raw material to finished tool.

    An inspector checking a segmented diamond blade with a dial gauge on a surface plate, with finished blades racked behind.

  5. Our R&D lab keeps improving the range; its newest result is Exakt.

    Close-up of an Exakt segment welded to a blade rim, with the diamonds standing proud of the metal.
    Staff at work in the R&D lab, some at test benches and one at a microscope.
  • ISO 9001:2015 certified — both factories (certificate E20260242673)
  • A nationwide network backs our tools with parts and service.

Who we work with.

  • Distributors

    One maker for a full range, each product in multiple sizes, with a catalogue and price list on request.

  • Contractors and fabricators

    Tools for concrete, stone and industry, with tailored specifications when a job needs them.

  • OEM and private label

    Under our name or yours.

A large saw blade held in a computer tension machine on the factory floor, with a technician beside it.

One of our two factories runs completely on solar power.

Tell us what
you cut.

Request a quoteAsk for the catalogue