What means the marking of grain
It is the number of sieve´s meshes (whereby the grain of
main fraction just falls through) on the length of one inch (25,4mm).
The bigger is the number of grain size, the smaller is
the size of grain.
Are all grains the same?
No, each grain size can
contain according to the norm also the shares of rougher and finer
What the warehousing conditions
have to be?
temperature 15 – 20°C.
humidity of air 40 – 50 %.
Why do the sheets by stocking ,,twist´´?
It is caused
owing to unsuitable storage conditions.
When it is
the low humidity of air, the abrasive material can twist „with the grain
When it is
the high humidity of air, the abrasive material can twist „with the
What terminology is used?
Rolls – it
is the band of abrasive material on the underlay (with the existing
width in mm and length in m) wrapped into the roll.
– it is the connected band of abrasive material (with the existing width
in mm and length in mm).
Sheet – it
is the abrasive material in the shape of rectangle (most often in
dimension 230 x 280mm).
Disc – it is
the abrasive material of circular (areal) shape.
cutting wheel – it is the compact abrasive material with reinforcement
of circular shape and existing thickness (e.g. 125mm x 1,6mm x 22,2mm).
wheel – they are the small plates of abrasive material on the underlay
glued on the „forehead“ of carrying disc.
How should I specify the order?
indicate on the order :
the shape (rolls,
endless belts, sheets, discs, multi-plate wheels)
the type (e.g.
when you do
not know the type, please mention at least the required background
material (paper or cloth)
dimension (width and length of endless belt in mm, by rolls the width in
mm and length in m, by discs the diameter in mm, by sheets the dimension
230 x 280mm)
specification is very important for not to receive the order such as „abrasive
paper on cloth“.
When I do not know which
suitable type should I choose?
Our workers will help you
with the choice of suitable type – see the section of contacts.
Do you send the deliveries to
customer or is it necessary the personal taking?
send the goods through the Czech Post (parcel), the bigger orders we
send according to agreement through the feeder service. The personal
taking is possible of course.
We can also
hand over the goods to your given transporter.
How does the structure of abrasive
structure of abrasive material shows clearly our picture :