ʻO ka ASTM A252 kahi maʻamau i hoʻomohala ʻia no ka hoʻohana ʻana me ka paipu paipu kila.
Hoʻopili ʻo ASTM A252 i nā puʻu paipu kahi e hana ai ka cylinder kila ma ke ʻano he lālā lawe ukana mau, a i ʻole ma ke ʻano he pūpū e hoʻokumu ai i nā puʻu paʻa.
ʻO ka papa 2 a me ka papa 3 ʻelua o kēia mau papa.
Hoʻokaʻawale ʻia ʻo A252 i ʻekolu mau papa me nā waiwai mechanical sequentially hoʻonui.
ʻO lākou: Papa 1, Papa 2, aPapa 3.
ʻO ka papa 2 a me ka papa 3 nā māka maʻamau i hoʻohana ʻia ma ASTM A252, a ke wehewehe nei mākou i nā waiwai o nā māka ʻelua ma hope.
ASTM A252hiki ke hana ʻia e ka seamless, resistance welding, flash welding, a i ʻole nā kaʻina hana fusion.
Ma nā noi paipu paipu, hāʻawi nā paipu kila ʻole i ke kākoʻo maikaʻi loa ma muli o ko lākou ikaika kiʻekiʻe a me nā hiʻohiʻona like ʻole.
Eia kekahi, hiki ke hana ʻia nā paipu kila ʻole me nā mānoanoa o ka pā mānoanoa, e hiki ai iā lākou ke pale i nā koʻikoʻi nui, e hoʻonui hou i ko lākou hilinaʻi i nā hale kākoʻo.
Eia nō naʻe, hiki ke hana ʻia nā paipu kila ʻole a hiki i ke anawaena kiʻekiʻe o 660 mm, e kaupalena ana i kā lākou hoʻohana ʻana i nā noi e koi ana i nā puʻu anawaena nui aʻe.Ma keia hihia,LSAW(Longitudinal Submerged Arc Welded) aSSAW(Spiral Submerged Arc Welded) ʻoi aku ka maikaʻi o nā paipu kila.
ʻAʻole ʻoi aku ka nui o ka phosphorus ma mua o 0.050%.
ʻAʻole pono nā mea ʻē aʻe.
ʻO ka ikaika uʻi a me ka ikaika hua a i ʻole ka helu hua
| Papa 2 | Papa 3 | |
| Ka 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] |
ʻO ka elongation
Hiki ke loaʻa nā kikoʻī kikoʻī maASTM A252 Piled Pipe Details.
| Papa inoa | Hoʻokaʻawale | ʻĀpana |
| Kaumaha | Kaumaha Manao | 95 % - 125 % |
| Anawaena waho | Hōʻike ʻia i waho ke anawaena | ± 1 % |
| Mānoanoa Pā | mānoanoa pā i koho ʻia | min 87.5% |
| Nā lōʻihi like ʻole | 16 a 25 kapuaʻi [4.88 a 7.62 m], ʻīniha |
| ʻElua mau lōʻihi like ʻole | ma luna o 25 ft [7.62 m] me ka awelika liʻiliʻi o 35 ft [10.67 m] |
| Nā lōʻihi like ʻole | ka lōʻihi e like me ka mea i ʻōlelo ʻia me ka hoʻololi ʻae ʻia o ±1 in. |
ASTM A370: Nā ʻano hoʻāʻo a me nā wehewehe no ka hoʻāʻo ʻana i ka mīkini o nā huahana kila;
ASTM A751: Nā Hana Ho'āʻo, Hoʻomaʻamaʻa, a me nā Hua'ōlelo no ka Nānā Kemika o nā huahana kila;
ASTM A941: Hua'ōlelo e pili ana i ke kila, ke kila kila, nā huila pili, a me nā ferroalloys;
ASTM E29: Hoʻomaʻamaʻa no ka hoʻohana ʻana i nā huahelu koʻikoʻi i ka ʻikepili hoʻāʻo e hoʻoholo ai i ka kūlike me nā kikoʻī;
ʻO Botop Steel kahi mea hana kiʻekiʻe kiʻekiʻe welded carbon steel paipu a me ka mea hoʻolako mai Kina, a me kahi mea hoʻoheheʻe paipu kila maʻemaʻe, hāʻawi iā ʻoe i kahi ākea o nā paipu kila!
