Hoʻokaʻawale ʻia nā paipu square e like me kā lākou ʻāpana keʻa:

(1) nā paipu huinahā maʻalahi—ʻo nā paipu huinahā like a me nā paipu huinahā like;

(2) paipu huinahalike paʻakikī—nā paipu huinahā like ʻole o ka pua, nā paipu huinahā hāmama, nā paipu huinahalike ʻōniʻoniʻo a me nā paipu huinahā kūikawā.Hoʻokaʻawale ʻana i ka mālama ʻana i ka ʻili o ka metala o nā paipu huinahā galvanized: e like me ka mālama ʻana i ka ʻili o ka metala, ua māhele ʻia nā paipu huinahā i loko o nā puʻu galvanized square hot-dip, phosphatized square tubes, oiled square tubes a pickling passivated square tubes.

Ka hoʻokaʻawale ʻana o ka hoʻohana nui ʻana o nā paipu square galvanized:Hoʻokaʻawale ʻia nā paipu square e like me kā lākou hoʻohana nui-nā paipu huinahā no ka hoʻonani ʻana a me ka hoʻolālā ʻana, nā mea hana mīkini, nā paipu square square no nā mea hana mechanical, nā paipu square square no nā mea kanu kemika, nā hale kila, nā paipu huinahā no ka ʻoihana hana moku, nā paipu square no nā trolleys a me ka square. nā paipu no nā kolamu kila a me nā kaola.

Hoʻokaʻawale ʻana i ka mānoanoa o ka pā o nā paipu rectangular galvanized:Hoʻokaʻawale ʻia nā paipu ʻāpana e like me ka mānoanoa o ka paia-ultra-thin-walled rectangular tubes, thin-walled rectangular tubes and thick-walled rectangular tubes.