1. ʻO nā paipu kila humuhumu no ke kumu maʻamau, ua ʻōwili ʻia mai ke kila kila kalapona maʻamau, ke kila kila haʻahaʻa a i ʻole ke kila kila e like me ka mea hana. No ka laʻana, ʻo nā paipu humuhumu i hana ʻia me ke kila kalapona haʻahaʻa e like me No. 10 a me No. 20 e hoʻohana nui ʻia e like me nā paipu lawe no ka mahu, ke kinoea lanahu, ke kinoea wai, ke kinoea kūlohelohe, nā huahana petroleum like ʻole a me nā kinoea a wai like ʻole; ke kila kalapona waena e like me 45 a me 40Cr. Hoʻohana nui ʻia nā paipu humuhumu i hana ʻia e hana i nā ʻāpana mīkini like ʻole a me nā mea hoʻopili paipu.

2. Hoʻolako ʻia nā paipu kila humuhumu no nā kumu maʻamau e like me ke ʻano kemika a me nā waiwai mechanical, a e like me ka hoʻāʻo hydraulic. Pono nā paipu kila humuhumu e lawe ana i ke kaomi wai e hala i ka hoʻāʻo kaomi hydraulic.

3. Hoʻohana ʻia nā paipu wili kūikawā i nā paila, ka ʻimi honua, nā bearings, ke kūpaʻa waikawa, a me nā mea ʻē aʻe. E like me ka paipu ʻeli honua petroleumAPI 5CTJ55, K55, N80, L80, P110, a pēlā aku, nā paipu nahā a me nā paipu paila no ka ʻoihana petrochemical.

Nā paipu kila humuhumu kūkuluhoʻohana nui ʻia no nā ʻano hana maʻamau a me nā ʻano hana mechanical. ʻO kāna mau mea hana (nā papa): kila kalapona No. 20, kila No. 45; kila hui Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc.

ʻO nā paipu kila humuhumu no ka lawe ʻana i nā wai e hoʻohana nui ʻia no ka lawe ʻana i nā paipu wai i ka ʻenekinia a me nā lako nui. ʻO nā mea i hōʻike ʻia (nā māka) he 20, Q345, a pēlā aku.

Nā paipu kila humuhumu no ke kaomi haʻahaʻa a me ke kaumaha waenanā pailahoʻohana nui ʻia no nā paipu e lawe ana i nā wai haʻahaʻa a me ke kaomi waena i loko o nā paila ʻoihana a me nā paila kūloko. ʻO nā mea i koho ʻia he 10 a me 20 kila.

Nā paipu kila humuhumu nonā paila kaomi kiʻekiʻehoʻohana nui ʻia no nā poʻomanaʻo a me nā paipu lawe wai wela kiʻekiʻe a me ke kaomi kiʻekiʻe i loko o nā mea kanu mana a me nā paila mea kanu mana nukelea. ʻO nā mea i koho ʻia he 20G, 12Cr1MoVG, 15CrMoG, etc.

Nā paipu kila humuhumu nomea hoʻomomona kaomi kiʻekiʻehoʻohana nui ʻia nā lako e halihali i nā paipu wai wela kiʻekiʻe a me ke kaomi kiʻekiʻe ma nā lako mea hoʻouluulu. ʻO nā mea i hōʻike ʻia he 20, 16Mn,12CrMo, 12Cr2Mo, a pēlā aku.

Hoʻohana nui ʻia nā paipu kila humuhumu no ka haki ʻaila i nā paila, nā mea hoʻololi wela a me nā paipu lawe wai i nā hale hana hoʻoheheʻe ʻaila. ʻO kāna mau mea hana he 15mog, 15CrMoG, 12crmog, a pēlā aku.

Hoʻohana nui ʻia nā paipu kila humuhumu no nā pahu kinoea e hana i nā pahu kinoea a me nā pahu hydraulic like ʻole. ʻO kāna mau mea hana e like me 37Mn, 34Mn2V, 35CrMo, a pēlā aku.

Hoʻohana ʻia nā paipu kila wili ʻole i ʻōwili wela ʻia no nā props hydraulic, kahi i hoʻohana nui ʻia e hana i nā kākoʻo hydraulic, nā cylinders a me nā kolamu i loko o nā lua lanahu, a me nā cylinders hydraulic ʻē aʻe a me nā kolamu. ʻO kāna mau mea i koho ʻia he 20, 45, 27SiMn, a pēlā aku.

Hoʻohana nui ʻia nā paipu kila wili ʻole i huki anu ʻia a i ʻole i ʻōwili anu ʻia no nā ʻano hana mīkini a me nā lako kaomi kalapona, e koi ana i ka pololei kiʻekiʻe o ka nui a me ka hoʻopau ʻana i ka ʻili maikaʻi. ʻO kāna mau mea hana e like me ke kila 20, 45, a pēlā aku.

Hoʻohana nui ʻia nā paipu kila humuhumu anu a me nā paipu kila ʻano kūikawā e hana i nā ʻāpana kūkulu like ʻole. Hana ʻia lākou me ke kila kūkulu kalapona kiʻekiʻe a me ke kila kūkulu haʻahaʻa.

Hoʻohana nui ʻia nā paipu kila humuhumu me ke anawaena kūloko pololei no nā cylinders hydraulic a me pneumatic e hana i nā paipu kila humuhumu i huki anu ʻia a i ʻole i ʻōwili anu ʻia me nā anawaena kūloko pololei no nā cylinders hydraulic a me pneumatic. ʻO kāna mau mea hana e hōʻike ana he 20, 45 kila, a pēlā aku.