How to build an extension pipe to shower 100% safe.
using materials with fair price found in house building materials.
mount an electric shower extender 100% secure using high quality material.
pipe manufacturer solderable glue base (Tiger manufacturer Amanco)
connection sleeve with flat side and one 20 mm internal pink
NIPE connection with flat and the other part with external thread
terflon tape in threaded connections
Measure the wall up shower drain (eg 30 cm) cutting the tube bar in size and sand the two extremities and then a dab of glue on the sleeve and tube and cencaixe the glove, right after pass glue adapter and the other end of the tube and fit both.