https://www.youtube.com/watch?v=xhfvZo6Uoto
Makala a ka sehloohong a kopo
Makala a mantlha a kopo ea Besa li-valve tsa polokeho ke: boilermaker, matla, meriana, sesole sa metsing, petrochemical, baetsi ba skid, indasteri ea lik'hemik'hale, kalafo ea cryogenic le oksijene, indasteri ea lijo, LPG/LNG polokelo ea matla le bahlahisi ba lipalangoang, oli le khase e lebopong la leoatle le kantle ho naha joalo-joalo.
Re romelle potso ea hau