Hoʻohana nui ʻia ka mīkini no ka wili ʻana i nā mea pā i nā hale kila e like me nā hale, nā alahaka a me nā hale kiaʻi hao.Hiki ke hoʻohana ʻia no ka hoʻoheheʻe ʻana i nā papa paipu, baffles a me nā flanges circular i loko o nā paila a me nā ʻoihana petrochemical.
Ke hoʻohana ʻia ka drill HSS no ka wili ʻana, ʻo 100 mm ka mānoanoa o ka hana ʻana, a hiki ke hoʻopaʻa ʻia nā papa ʻoi aku no ka wili.Hiki i kēia huahana ke hoʻoheheʻe i loko o ka lua, puka makapō, puka ʻanuʻu, hole end chamfer.ʻO ka hana kiʻekiʻe a me ka pololei kiʻekiʻe.
ʻO ka lawelawe a me ka hōʻoia