ASTM A179 (ASME SA179) he paipu kila humuhumu anu haʻahaʻa-kalapona no ka hoʻohana ʻana i nā mea hoʻololi wela tubular, nā condensers, a me nā noi hoʻoili wela like.
ʻO ASTM A179 a me ASME SA179 ʻelua mau kūlana i like loa. No ka maʻalahi, ua hoʻohana ʻia ʻo ASTM A179 ma lalo nei.
He kūpono ʻo ASTM A179 no nā paipu kila me ke anawaena waho o 1/8″ - 3″ [3.2mm - 76.2mm].
Botop Steelhe mea kūʻai aku paipu kila humuhumu mai Kina mai, e hāʻawi ana iā ʻoe i kahi koho nui o nā paipu kila humuhumu ASTM A179/ASME SA179 kiʻekiʻe-i huki anu ʻia.
Ua hoʻolaʻa ʻia mākou i ka hāʻawi ʻana i kā mākou mea kūʻai aku me nā huahana a me nā lawelawe kiʻekiʻe loa e hōʻoia i ka holo pono ʻana o kāu mau papahana. E koho iā Botop Steel, a koho i kahi hoa hilinaʻi.
Ua ʻōlelo mua mākou ua hana ʻia ka A179 me ka hoʻohana ʻana i ke kaʻina hana humuhumu anu. He aha nā kaʻina hana kikoʻī e pili ana i ka hana humuhumu anu? E ʻoluʻolu e nānā i ka pakuhi kahe o ke kaʻina hana ma lalo nei.
Ma ke kūlana ASTM,A556hoʻohana pū i ke kaʻina hana hana seamless i huki anu ʻia akā no nā mea hoʻomehana wai tubular. Hiki i ka poʻe hoihoi ke ʻike hou aku.
Ma hope o ke kaha anu hope loa, ua mālama ʻia nā paipu kila i ka wela ma nā mahana o 1200°F [650°C] a ʻoi aku paha.
| Kūlana Maʻamau | C | Mn | P | S |
| ASTM A179 | 0.06-0.18% | 0.27-0.63% | 0.035% ka palena kiʻekiʻe | 0.035% ka palena kiʻekiʻe |
ʻAʻole ʻae ʻo ASTM A179 i ka hoʻohui ʻana o nā mea ʻē aʻe i ka haku mele kemika.
ʻAʻole pono e ʻoi aku ka paʻakikī o ka paipu kila ma mua o 72 HRBW (paʻakikī Rockwell).
| Ikaika tensile | Ikaika hāʻawi | Hoʻolōʻihi | Hoʻāʻo Hoʻopālahalaha | Hoʻāʻo Flaring | Hoʻāʻo Flange |
| minuke | minuke | i loko o 2 ʻīniha a i ʻole 50 mm, min | |||
| 47 ksi [325 MPa] | 26 ksi [180 MPa] | 35% | E nānā iā ASTM A450, Māhele 19 | E nānā iā ASTM A450, Māhele 21 | E nānā iā ASTM A450, Māhele 22 |
E hoʻāʻo ʻia kēlā me kēia paipu i kahi hoʻāʻo kaomi hydraulic a i ʻole, inā ʻōlelo ka mea kūʻai aku, hiki ke hoʻohana ʻia kahi hoʻāʻo uila ʻaʻole e luku.
Mālama ka paipu kila i ke kaomi no 5s ma ka liʻiliʻi me ka ʻole o ka leaka.
Ua helu ʻia ke kaomi hoʻāʻo me ka hoʻohana ʻana i kēia ʻano hana:
ʻIniha - Paona Nā ʻĀpana: P = 32000 t/D
Nā ʻĀpana SI: P = 220.6t/D
P = kaomi hoʻāʻo hydrostatic, psi a i ʻole MPa;
t = ka mānoanoa o ka pā i kuhikuhi ʻia, ʻīniha a i ʻole mm;
D = ke anawaena waho i kuhikuhi ʻia, ʻīniha a i ʻole mm.
ʻO kēia kahi pūʻolo A179 maʻamau, a hiki ke hāʻawi ʻia aku nā pūʻolo i hana ʻia e like me nā koi o ka papahana.
Paipu ʻōlohelohe, uhi ʻeleʻele (i hoʻopilikino ʻia);
6" a ma lalo nā nui I loko o nā pūʻolo me ʻelua mau kaula pulupulu, ʻo nā nui ʻē aʻe i wehe ʻia;
Me nā pale welau nā wēlau ʻelua;
Wāhi maʻamau, wēlau bevel;
Ke māka ʻana.
