A.Description of square box ,Verification
Cast iron square box :High strength HT200-300
Cast iron square box structure, is a cavity cube with 6 working
surface wich are made of cast iron or steel, one of the working
face has a v-slot. (Also can be produced to T-slot. According to
the user's required to process order). Square box test of the
environmental conditions: normal temperature and humidity. The
working surface of cast iron square box may not have rust,
scratches, cracks, dents and other defects affecting measurement
performance. Non-working surface should be processed with clean
sand painting and edge chamfering.
Accuracy of square boxes: except for the scraping test plane
givers, but also with the coloring used to test the contact
pattern. In any number of spots within a square of the side length
of 25mm: 1grade, 2grade no less than 25 points; 3grade not less
than 20 points.
Square box test of the environmental conditions: normal temperature
and humidity. The working surface of square box may not have rust,
scratches, cracks, dents and other defects affecting measurement
performance. Non-working surface should be processed with clean
sand painting and edge chamfering. There should be signs in the
interior wall side, and marked with standard size, level serial
number and manufacturer name.
B.Using of square box
Square box function: Cast iron square box is mainly used for the
testing and marking of the parallel and vertical degree of each
part. Square box is a kind of cavity cube with 6 working surface
wich are made of cast iron or steel, one of the workingface has a
v-slot.
