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, ʻōpuʻu hāhā waha, puʻu huinaha koli a me nā paipu huinaha kūikawā.Hoʻokaʻawale ʻana i ka mālama ʻana i ka metala ʻili o nā paipu huinahā: e like me ka mālama ʻana i ka ʻili o ka metala, ua māhele ʻia nā paipu huinahā i loko o nā paipu pāhaʻi wela wela, nā paipu square phosphatized, ʻaila ʻaila ʻāpana a me ka 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 lako 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 huinahā 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 rectangular e like me ka mānoanoa o ka paia-ultra-thin-walled rectangular tubes, thin-walled rectangular tubes mānoanoa-walled rectangular tubes.