Pipe ea tšepe e ntšo ea annealed e ka sebelisoa liphaepheng tsa phetisetso ka petroleum, lik'hemik'hale, khase ea tlhaho le liindasteri tse ling.E na le anti-corrosion, ho hanyetsa mocheso o phahameng, ho hanyetsa kutu le thepa e meng, 'me e sebelisoa haholo masimong a indasteri.