A bɛ waati joli ta nɛgɛ nɛnɛma pipew la walasa u kana nɔgɔ .

Pipes galvanisés waati nɔgɔlen bɛ tali kɛ kosɛbɛ fɛnw na i n’a fɔ galon fɛɛrɛ, galon layɛrɛ janya, galon hakɛ, ani baarakɛcogo sigida. A ka c’a la, galɔn nɛnɛma pipew bɛ nɔgɔ teliya la.
Nɛnɛ hakɛ min bɛ bɔ fiɲɛ na-Galvanized steel pipes, o ka dɔgɔ kosɛbɛ. Ka fara o kan, nin galɔn pipe suguya in bɛ galon dɔrɔn de la kɛnɛma, k’a sɔrɔ a kɔnɔna tɛ. Zɛnki dacogo girinya fan kelen fɛ, o bɛ bɛn 20g/㎡ ma, o b’a to a ka teli ka nɔgɔ. Baarakɛcogo la min bɛ kɛ cogo la, nɛnɛ-Nɛnɛ pibilikiw bɛna daminɛ ka nɔgɔ san kelen ɲɔgɔn kɔfɛ. Ni a janya ka bon kosɛbɛ, a bɛ mɛn ko a bɛ mɛn. Minnu bɛ 2,75mm duguma, olu bɛ se ka mɛn san 2 fo san 3 kɔnɔ, ka sɔrɔ minnu ka ca ni 3,0mm ye, olu bɛ se ka mɛn san 3 fo san 5 kɔnɔ.