1. Paipu kahiko a me ke kikowaena kikowaena no ka paipu.
2. He pyknotic a symmetrical ka mea paipu, a me nā mea ʻē aʻe i maikaʻi ʻole acoustical conductivity;
3. Ua uhi ʻia ka ʻili o ka paia paipu e like me ka pena;
4. ʻAʻole ka paipu wai piha ka noi;
5. Aia ka loko o ka paipu me ka nui o nā ea a i ʻole ka pākēneka paʻa nui;
6. ʻAʻole lawa ka lōʻihi o ka paipu pololei.
7. ʻO kahi o ka hoʻokomo ʻana i ka mika ma kahi kokoke i ke kahawai o ka paipu i hoʻokomo ʻia i ka pahu;
8. Mea hoʻololi a i ʻole ka walaʻau ʻana ma ka pūnaewele.
9. ʻO ka mea i ana ʻia he ʻano hui ʻia a i ʻole kekahi wai me ka conductivity acoustical maikaʻi ʻole, e like me ka lepo maka, ka lepo, ka slurry, etc.
10. Aia ka wai o ka paipu mai luna a lalo a i ʻole i hoʻokomo ʻia ma ke ʻano he wahi kiʻekiʻe o ka paipu, no ka mea, ʻaʻole i piha ka wai o ka paipu a i ʻole nā huʻihuʻi ma luna o ka wahi hoʻokomo.
Ka manawa hoʻouna: Iune-30-2022