1. Tumama, leai se oona, leai se fa'afefe, leai ni microorganisms, ma fa'amautinoa le lelei o le suavai

2. Tete'e i vaila'au pala, palapala ma le gataifale pala, cathodic disbondment tetee

3. O le faʻapipiʻiina o le faʻagasologa e matua, faigofie, ma vave, ma o le fesoʻotaʻiga e talitutusa ma paipa galvanized masani

4. Lelei le tetee o le tau, talafeagai mo siosiomaga faigata e pei o toafa ma saline-alkali

5. Smooth paipa puipui, faʻaleleia le faʻaleleia lelei ma le umi o le auaunaga