ʻO nā paipu kila kalapona he made o ke kila kila a i ʻole ke kila poepoe paʻa ma o ka puka ʻana, a laila ʻōwili wela, ʻōwili anu a huki anu. He kuleana koʻikoʻi ka paipu kila kalapona i ka ʻoihana paipu kila maʻemaʻe o Kina. ʻO nā mea nui he Q235, 20 #, 35 #, 45 #, 16Mn. ʻO nā kūlana hoʻokō huahana koʻikoʻi e pili ana i nā kūlana aupuni, nā kūlana ʻAmelika, nā kūlana Iapana, a me nā mea ʻē aʻe. E nānā kākou i ka pono o nā paipu kila kalapona.

Nā hoʻohana o nā paipu kila kalapona:

1. Nā paipu no ka ʻenehana mīkini. E like me nā paipu hoʻokele mokulele, nā paipu hapalua o nā kaʻa, nā paipu hoʻouna ʻana, nā paipu hoʻoheheʻe tractor nui no nā kaʻa, nā paipu hoʻomaʻamaʻa wai tractor, nā ʻāpana ʻāpana ʻāpana a me nā ʻāpana ʻāpana ʻāpana no nā locomotives mahiʻai, nā paipu transformer a me nā paipu wili, etc.
2. ʻO ka wili ʻana i nā paipu no ka ʻaila honua honua. E like me: paipu wili aila, paipu wili aila (kelly a me hexagonal drill pipes), drill jacks, oil pipelines, oil waterproof casings and like tee joints, geological environment drill pipes (core pipes, water casings, active drilling rods, drill jacks, nā hoops a me nā mea hoʻohui pine, etc.).
3. Paipu kemika. E like me: nā paipu hoʻoheheʻe ʻaila, nā paipu no nā mea hoʻololi wela a me nā paipu o nā mīkini kemika a me nā mea hana, nā paipu kūpaʻa ʻakika kila, nā paipu ea no nā mea kanu kūlohelohe a me nā paipu no ka lawe ʻana i nā mea kanu kemika, etc.
4. Na paipu no na paipu. E like me: ka wai, nā paipu kinoea, nā paipu ʻole no nā paipu ea paʻa, nā paipu aila, nā paipu no ka aila a me nā laina nui. ʻO nā paipu alakaʻi no ka wai hoʻoheheʻe mahiʻai a me nā paipu no nā mea hana sprinkler irrigation, etc.
5. Nā paipu no nā mea wela. E like me nā paipu wai paila a me nā paipu mahu piha i hoʻohana ʻia i nā kapuahi hoʻomehana maʻamau, nā paipu wela nui, nā paipu uwahi nui, nā paipu hoʻopau liʻiliʻi, nā paipu pōhaku ʻākoʻa a me nā paipu kila hoʻomehana wela kiʻekiʻe i hoʻohana ʻia i loko o nā umu wela locomotive.
6. Mālama ʻia e nā keʻena ʻē aʻe. E like me: nā paipu no nā kīʻaha (nā paipu no nā pahu hau liquefied a me nā mea maʻamau), nā paipu no nā mea kani a me nā mika, nā paipu no nā hihia wati, nā nila a me nā paipu no nā mīkini olakino, etc.