ʻO ASTM A252 kahi maʻamau i hoʻomohala kūikawā ʻia no ka hoʻohana ʻana me nā paipu kila paila.
Pili ʻo ASTM A252 i nā paila paipu kahi e hana ai ka cylinder kila ma ke ʻano he lālā lawe ukana mau, a i ʻole he pūpū e hana i nā paila sima i hoʻolei ʻia ma kahi.
ʻO ka papa 2 a me ka papa 3 ʻelua o kēia mau papa.
Ua māhele ʻia ʻo A252 i ʻekolu mau papa me nā waiwai mechanical i hoʻonui ʻia.
ʻO lākou kēia: Papa 1, Papa 2, a mePapa 3.
ʻO ka Papa 2 a me ka Papa 3 nā papa i hoʻohana pinepine ʻia ma ASTM A252, a ke wehewehe nei mākou i nā waiwai o nā papa ʻelua ma nā kikoʻī ma hope.
ASTM A252hiki ke hana ʻia ma o ke kaʻina hana seamless, resistance welding, flash welding, a i ʻole fusion welding.
I nā noi paila paipu, hāʻawi nā paipu kila seamless i ke kākoʻo maikaʻi loa ma muli o ko lākou ikaika kiʻekiʻe a me nā ʻano ikaika like.
Eia kekahi, hiki ke hana ʻia nā paipu kila humuhumu me nā mānoanoa o ka paia mānoanoa loa, e hiki ai iā lākou ke kū i nā kaumaha nui aʻe, e hoʻonui hou ana i ko lākou hilinaʻi i nā ʻano kākoʻo.
Eia nō naʻe, hiki ke hana ʻia nā paipu kila humuhumu a hiki i ke anawaena kiʻekiʻe o 660 mm, kahi e kaupalena ai i kā lākou hoʻohana ʻana i nā noi e koi ana i nā paila anawaena nui. I kēia hihia,LSAW(Longitudinal Submerged Arc Welded) a meSSAWʻOi aku ka maikaʻi o nā paipu kila (Spiral Submerged Arc Welded).
ʻAʻole ʻoi aku ka nui o ka phosphorus ma mua o 0.050%.
ʻAʻohe mea ʻē aʻe e pono ai.
Ka ikaika tensile a me ka ikaika hāʻawi a i ʻole ka wahi hāʻawi
| Papa 2 | Papa 3 | |
| Ikaika tensile, min | 60000 psi[415 MPa] | 60000 psi[415 MPa] |
| Ka helu hua a i ʻole ka ikaika hua, min | 35000 psi[240 MPa] | 45000 psi[310 MPa] |
Hoʻolōʻihi
Hiki ke loaʻa nā kikoʻī kikoʻī maNā kikoʻī o ka paipu pila ASTM A252.
| Papa inoa | Hoʻokaʻawale | Ka laulā |
| Kaumaha | Kaumaha Manaʻo | 95% - 125% |
| Anawaena o waho | Anawaena waho i kuhikuhi ʻia | ± 1% |
| Mānoanoa o ka paia | ka mānoanoa o ka paia i kuhikuhi ʻia | palena iki he 87.5% |
| Nā lōʻihi kaulele hoʻokahi | 16 a 25 kapuaʻi [4.88 a 7.62 m], ʻīniha |
| Nā lōʻihi kaulele pālua | ma luna o 25 kapuaʻi [7.62 m] me ka awelika haʻahaʻa loa o 35 kapuaʻi [10.67 m] |
| Nā lōʻihi like | ka lōʻihi e like me ka mea i kuhikuhi ʻia me kahi ʻokoʻa i ʻae ʻia o ±1 ʻīniha. |
ASTM A370: Nā ʻAno Hoʻāʻo a me nā Wehewehena no ka Hoʻāʻo ʻana i nā Huahana Kila;
ASTM A751: Nā ʻAno Hoʻāʻo, nā Hana, a me nā Huaʻōlelo no ka Nānā Kemika o nā Huahana Kila;
ASTM A941: Nā Huaʻōlelo e pili ana i ke kila, ke kila kila ʻole, nā mea hoʻohui pili, a me nā Ferroalloys;
ASTM E29: Hoʻomaʻamaʻa no ka hoʻohana ʻana i nā huahelu koʻikoʻi ma ka ʻikepili hoʻāʻo e hoʻoholo i ke kūlike me nā kikoʻī;
He mea hana a mea hoʻolako paipu kila kalapona kiʻekiʻe ʻo Botop Steel mai Kina mai, a he mea kūʻai aku paipu kila seamless hoʻi, e hāʻawi ana iā ʻoe i kahi ākea o nā hoʻonā paipu kila!
