T-piece straight with 2 separate branches are reinforced.
If the T-piece is installed at the end of a section, fixing bar must be welded onto the main pipe.
Wires for surveillance are embedded.
All preinsulated T-pieces are as a standard delivered with 2 embedded wires: a copper wire and a tinned wire.
The tinned wire always runs into the branch, whereas the copper wire runs straight through.
