ASTM A252 Papa 3ʻo ia ka mea maʻamau i hoʻohana ʻia ma ke ʻano he paipu pahu cylindrical.
ʻAʻole i kaupalena ʻia nā puʻu paipu kila ma ka papa 3 i kahi kaʻina hana kikoʻī a hiki ke hana ʻia me ka hoʻohana ʻana i nā ʻano hana paipu like ʻole, me kaSMLS(maʻaʻole),SAW(hoʻohuʻi ʻia arc submerged), aEFW( welded electro-fusion).Hiki i kēia maʻalahi ke hoʻololi i nā pono ʻenekinia like ʻole a me nā hiʻohiʻona noi.
Ma ke ʻano he kiʻekiʻe kiʻekiʻe o ka maʻamau A52, loaʻa iā ia nā waiwai mechanical maikaʻi loa me ka ikaika haʻahaʻa haʻahaʻa o 310 MPa a me ka ikaika tensile haʻahaʻa o 455 MPa a hiki ke hoʻohana ʻia ma ke ʻano he mea hoʻokele ukana mau loa a i ʻole he pūpū no ka hoʻolei ʻana. -e kau i nā puʻu kaʻa.
ʻO kaASTM A252Hoʻokaʻawale ka maʻamau i nā puʻu paipu kila i ʻekolu mau māka e kūpono i nā kaiapuni noi like ʻole a me nā koi hoʻouka.ʻO nā papa ʻekolu:
Papa 1, Papa 2, a me Papa 3.
Ua hoʻokomo ka hui i kahi pūʻulu piha o ka JCOE LSAW paipu kila kila a me nā mea ho'āʻo, kūikawā i ka hanaʻana i ka paipu kila LSAW me ka DSAW (kuʻi lua ʻaoʻao submerged arc).
ʻO nā kikoʻī huahana:
Anawaena waho: DN 350 – 1500;
Mānoanoa Pā: 8 – 80 mm;
ʻO nā puʻu paipu e maʻalahi.
E ʻoki ʻia nā welau a i ʻole e ʻoki ʻia i ka mīkini a hoʻopau ʻia.
Ma ka hihia onā welau beveled, pono ke kihi o ka welau beveled30 - 35°.
Ke kila Botophāʻawi i kahi ākea o nā paipu kila ASTM A52 kiʻekiʻe.Eʻoluʻolu e leka uila iā mākou no kāu mau koi.
E hana ʻia ke kila e kekahi a ʻoi aku paha o kēia mau kaʻina hana: open-hearth, basic-oxygen, a i ʻole ka umu uila.
E hana ʻia ʻo A252 e kamaʻemaʻe, wili ʻia ke kūpale uila, uila uila, a i ʻolefusion weldedkaʻina hana.
ʻO nā humuhumu o nā puʻu paipu weldedlōʻihi, helic-butt, a i ʻolehelic-lap.
No ka hōʻoiaʻana i ka maikaʻi a me ka hana o nā puʻu paipu kila, he mea nui e koho i ke kaʻina hana kūpono.
He kūpono ke kaʻina hana LSAW (SAWL) no ka paipu kila me ka pā mānoanoa, ʻoi loa i nā hana kūkulu hale a me nā hana hoʻolālā e koi ai i ka hiki ke lawe i ka ukana kiʻekiʻe a me ke kūkulu kumu hohonu.Ma muli o kona ikaika kiʻekiʻe, hiki ke halihali i ka ukana, a me ka hiki ke hoʻololi i ka hohonu, hiki iā ia ke hoʻololi i kahi ākea o nā kūlana geologic paʻakikī me ka hāʻawi ʻana i nā pono o ka hoʻokomo wikiwiki a me ka lōʻihi lōʻihi.
JCOEhe hana maʻamau i ka hana ʻana o ka paipu kila LSAW, nona nā pono o ka hana kiʻekiʻe, kiʻekiʻe kiʻekiʻe, ka nui anawaena hana mana, ka pololei dimensional, adaptability, a me ka hoʻokele waiwai, ka mea i hoʻolilo iā ia i ke kaʻina hana paipu i makemake ʻia i nā mea nui- papahana ʻenekinia pālākiō.
Aia ke kilaʻaʻole iʻoi aku ma mua o 0.050% phosphorous.
ʻO ka hoʻopaʻa ʻana i ka ʻike phosphorus i ke kila e hōʻoia i ka maikaʻi o ke kila i nā ʻano mechanical maikaʻi, ʻoi loa ke hoʻohana ʻia no nā noi hana e like me ke kūkulu hale.
Kōkua kēia palena i ka pale ʻana i ke kila mai ka palupalu ʻana i nā mahana haʻahaʻa, pēlā e hōʻoia ai i kona palekana a me ka hilinaʻi i ka hoʻohana.
No nā mea ʻē aʻe, ʻaʻohe koi.
ʻO kēia no ka mea ʻo ka manaʻo nui o nā paipu paipu e hōʻoia i ka loaʻa ʻana o ka ikaika a me ka paʻakikī o nā paipu, ʻo ia nā mea koʻikoʻi no ka hoʻohana ʻana i nā hale kākoʻo.
No nā paipu puʻupuʻu tubular, ʻoi aku ka nui o ka nānā ʻana i nā ʻano mechanical o nā paipu, e like me ka ikaika hua, ka ikaika tensile, a me ka paʻakikī, no ka mea, pili pono kēia mau waiwai i ka hiki ke amo a me ke kūpaʻa o ka tubular pile i nā noi kūpono. .
AHāʻawi ka Papa 2 i nā waiwai liʻiliʻi i helu ʻia:
Ma kahi o ka mānoanoa o ka paia i kuhikuhi ʻia ma waena o nā mea i hōʻike ʻia ma luna, e hoʻoholo ʻia ka waiwai elongation haʻahaʻa penei:
Papa 3: E = 32t + 10.00 [E = 1.25t + 10.00]
E: elongation ma 2 in. [50.8 mm], %;
t: mānoanoa pā i koho ʻia, in. [mm].
ʻO ka maʻamau ASTM A252 Grade 3 e hōʻoia i ka palekana a me ka hilinaʻi o nā puʻu tubular i hoʻohana ʻia ma ka hoʻonohonoho ʻana i nā koi liʻiliʻi no kēia mau waiwai mechanical.
No nā ana paipu i helu ʻole ʻia ma nā papa kaumaha paipu, hiki ke helu ʻia ke kaumaha o kēlā me kēia ʻāpana me ka hoʻohana ʻana i ke ʻano.
w = C×(Dt)×t
w: ke kaumaha o ka lōʻihi, Ilb/ft [kg/m];
D: i hoakakaia ke anawaena mawaho, in. [mm];
t: ka mānoanoa o ka paia i koho ʻia, in. [mm];
C: 0.0246615 no ka helu ʻana ma nā ʻāpana SI a me 10.69 no ka helu ʻana ma nā ʻāpana USC.
Hoʻokumu ʻia nā helu i luna ma luna o ka manaʻo he 7.85 kg/dm³ ka mānoanoa o ka paipu kila.
Loaʻa i ka ASTM A252 Grade 3 ka ikaika kiʻekiʻe a me ka paʻakikī no nā ʻano ʻāina like ʻole a me nā koi ʻana i ka ukana.Hoʻohana maʻamau ʻia kēia paipu kila i nā noi penei:
1. Nā kahua kūkulu: Hoʻohana ʻia ʻo ASTM A252 Grade 3 paipu kila ma ke ʻano he puʻu i ka hana kumu no nā hale kiʻekiʻe, nā alahaka, a me nā hale nui ʻē aʻe e hāʻawi i ke kākoʻo kūpono a me ke kūpaʻa.
2. Nā awa a me nā awa: Hoʻohana ʻia kēia mau paipu kila no ka hoʻopaʻa ʻana i ke kūkulu ʻana i nā awa a me nā awa e hōʻoia i ka hiki ʻana o ka hale ke pale aku i ka hopena o nā moku a me ka ʻino o ke kai.I mea e hoʻonui ai i ka lōʻihi a me ke kū'ēʻana i ka corrosion o nā paipu kila, hoʻohana pinepineʻia nā uhi e hāʻawi i ka pale hou.
3. Waiwai: Hoʻohana ʻia ka paipu kila ASTM A252 Grade 3 no ka hoʻoikaika ʻana i nā kapa kahawai a hāʻawi i ka pale o ka wai i ke kūkulu ʻana i nā pā, nā laka, a me nā mea wai ʻē aʻe.
4. Nā papahana ikehu: Ma ka makani makani, ka aila rigs, a me na hana ikehu e ae, ua hoohana ia keia mau paipu kila ma ke ano he mau hale kokua no ka hooiaio ana i ka hana paa o na mea hana.
5. Nā lako kaʻa: Hoʻohana ʻia ka paipu kila ASTM A252 Grade 3 no ke kūkulu ʻana i nā ala kaʻaahi, nā alaloa, a me nā ala mokulele e hāʻawi i ka hiki ke halihali i ka ukana a me ka lōʻihi.
Mai kona hoʻokumu ʻana i ka makahiki 2014,Ke kila Botopua lilo i mea hoʻolako alakaʻi o ka paipu kila kalapona ma Northern China, i ʻike ʻia no ka lawelawe maikaʻi loa, nā huahana kiʻekiʻe, a me nā hāʻina piha.
Ke kila Botophāʻawi i nā ʻano paipu kila kalapona a me nā huahana pili, me ka seamless, ERW, LSAW, a me ka paipu kila SSAW, a me ka laina piha o nā paipu paipu a me nā flanges.ʻO kāna mau huahana kūikawā pū kekahi me nā mea kila kiʻekiʻe a me nā austenitic stainless steel, i hana ʻia e hoʻokō i nā koi o nā papahana pipeline like ʻole.
ʻO ASTM A252 GR.2 GR.3 Paipu Puʻu kila ʻole
ASTM A252 GR.3 SSAW Piles Piles Pipe
AS 1579 SSAW Paipu kila wai a ahu kila
EN10219 S355J0H LSAW(JCOE) Puʻu Paipu kila
EN 10219 S275J0H/S275J2H ERW Paipu kila no ka hale
BS EN10210 S355J0H Paipu kila ʻole
EN10210 S355J2H KULA ERW STEEL PIPE
API 5L PSL1&PSL2 GR.B Longitudinal Submerged-Arc Welded Paipu
ʻO ASTM A501 Papa B LSAW Nā Paipu Kūleʻa Kūleʻa Kūʻai
ASTM A672 B60/B70/C60/C65/C70 LSAW Paipu Kinohi
ASTM A671/A671M LSAW Paipu kila
ASTM A500 Papa C Seamless Steel Structural Tube
