ʻO ka paipu pōʻai puʻupuʻu he mau paipu kila i hoʻopaʻa ʻia me nā papa galvanized wela ma ka ʻili.Nui kaulana 2 iniha , 3 iniha, 4 iniha.Hiki i ka Galvanizing ke hoʻonui i ka pale ʻana o ka paipu kila a hoʻolōʻihi i kona ola lawelawe.He ākea ka hoʻohana ʻana o ka paipu Galvanized.Ma waho aʻe o nā paipu laina no ka wai, ke kinoea, ka aila a me nā wai haʻahaʻa haʻahaʻa maʻamau, hoʻohana ʻia ia e like me nā paipu aila i loko o ka ʻoihana ʻaila, ʻoi aku ka nui o nā ʻaila ʻaila ma waho, a me nā mea hoʻomehana aila a me nā mea hoʻoheheʻe condensing no nā lako coking kemika., Laahu holoi holoi aila paipu, a me trestle paipu pila, koʻu tunnel kākoʻo paipu paipu a me structural kila paipu, etc.