Trapezoid groove backings
Trapezoid groove backings are required
to accomodate the slag produced
from
manual
electrodes,
rutile flux
cored wires and SAW fluxes.
They
are supplied as:
-
loose blocks
-
blocks mounted in rigid metal rails for straight welds
-
blocks on self-adhesive aluminium tape or threaded onto wire. Blocks on tape are available as semi rigid for straight joints and flexible designs for curved joints such as those found on ship hulls, tanks, vessels and pipe applications.