Wopanga Mapaipi Achitsulo Otsogola & Wopereka Ku China |

Kodi "Pipeline Steel" ndi chiyani?

Chitsulo chachitsulo ndi mtundu wachitsulo chomwe chimagwiritsidwa ntchito popanga machitidwe oyendetsa mapaipi amafuta ndi gasi.Monga chida choyendera mtunda wautali wamafuta ndi gasi, dongosolo la mapaipi lili ndi ubwino wachuma, chitetezo komanso osasokonezeka.

kaboni-LSAW-wa-project031

Kugwiritsa ntchito chitsulo chapaipi

Chitsulo cha bombamafomu opangira mankhwala akuphatikizapo mipope yachitsulo yopanda msoko ndi mipope yachitsulo yowotcherera, yomwe ingagawidwe m'magulu atatu: mapiri a alpine, madera a sulfure ndi malo ozungulira nyanja. .

Mavuto ambiri omwe amakumana nawo ndi zitsulo zamapaipi akuphatikizapo: madera ambiri a mafuta ndi gasi ali m'madera a polar, madzi oundana, zipululu, ndi nyanja, ndipo zachilengedwe zimakhala zovuta kwambiri;kapena pofuna kupititsa patsogolo kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe kake, kukula kwa payipi kumakulitsidwa nthawi zonse, ndipo mphamvu yobweretsera ikuwonjezeka nthawi zonse.

Mtengo wa Pipeline Steel Properties

Kuchokera pakuwunika kwathunthu kwa chitukuko cha mapaipi amafuta ndi gasi, momwe amayakira mapaipi, njira zazikulu zolephereka komanso zolephera, zitsulo zamapayipi ziyenera kukhala ndi zida zamakina abwino (khoma lakuda, kulimba kwakukulu, kulimba kwambiri, kukana), komanso kuyenera kukhala lalikulu m'mimba mwake, Iyeneranso kukhala ndi awiri lalikulu, weldability, kuzizira ndi otsika kutentha kukana, dzimbiri kukana (CO2), kukana madzi a m'nyanja ndi HIC, SSCC ntchito, etc.

①Kulimba mtima

Chitsulo cha chitoliro sichimangofunika kulimba kwambiri komanso mphamvu zokolola, komanso zimafuna kuti chiŵerengero cha zokolola chikhale mumtundu wa 0,85 ~ 0,93.

② Kukhazikika kwakukulu

kulimba kwamphamvu kumatha kukwaniritsa zofunikira zopewera kusweka.

③Kutentha kotsika kwa ductile-brittle transition

Madera ovuta komanso nyengo zimafunikira chitsulo chapaipi kuti chikhale ndi kutentha kocheperako kocheperako. Dera lometa ubweya la DWTT (Drop Weight Tear Test) lakhala chilozera chachikulu choletsa kulephera kwa mapaipi. malo ometa ubweya wa ng'ombeyo akhale ≥85% pa kutentha kochepa kwambiri.

④Kukana kwabwino kwa hydrogen-induced cracking (HIC) ndi sulfide stress corrosion cracking (SSCC)

⑤ Kuchita bwino kwa kuwotcherera

Weldability wabwino wa zitsulo n'kofunika kwambiri kuonetsetsa umphumphu ndi kuwotcherera khalidwe payipi.

carbon-zitsulo-api-5l-x65-psl1-paipi

Pipeline Steel Standards

Pakali pano, mfundo zazikulu zaumisiri zamapaipi achitsulo otumizira mafuta ndi gasi omwe amagwiritsidwa ntchito mdziko langa akuphatikizapoAPI 5L, DNV-OS-F101, ISO 3183, ndi GB/T 9711, ndi zina zotero.

① API 5L (mafotokozedwe a mapaipi a mzere) ndi njira yovomerezeka yopangidwa ndi Maine Petroleum Institute.

② DNV-OS-F101 (mapaipi apamadzi apamadzi) ndizomwe zidapangidwa mwapadera ndi Det Norske Veritas pamapaipi apamadzi apamadzi.

③ ISO 3183 ndi muyezo wopangidwa ndi International Organisation for Standardization pamikhalidwe yobweretsera mapaipi achitsulo potumiza mafuta ndi gasi.Muyezo uwu sukhudza kupanga mapaipi ndi kukhazikitsa.

④ Mtundu waposachedwa wa GB/T 9711 ndi mtundu wa 2017. Mtunduwu wachokera ku ISO 3183:2012 ndi API Spec 5L 45th Edition. Mogwirizana ndi milingo iwiri yotchulidwa, milingo iwiri yazinthu zomwe zatchulidwa: PSL1 ndi PSL2.PSL1 amapereka muyezo khalidwe mlingo wa chitoliro mzere;PSL2 imawonjezera zofunikira zomwe zimaphatikizira kuphatikiza mankhwala, kulimba kwa notch, mphamvu zamagetsi ndi kuyesa kowonjezera kosawononga (NDT).

API SPEC 5L ndi ISO 3183 ndizodziwika bwino padziko lonse lapansi.Mosiyana ndi izi, makampani ambiri amafuta padziko lapansi azolowera kutengeraMafotokozedwe a API SPEC 5L monga mfundo zoyambira pakugula chitoliro chachitsulo.

Kuwunika kwa chitoliro cha LSAW
kuyendera chitoliro chachitsulo

Kuitanitsa zambiri

Mgwirizano wolamula wa zitsulo zamapayipi uyenera kukhala ndi izi:

① Kuchuluka (chinthu chonse kapena kuchuluka kwa mapaipi achitsulo);

② Normative mlingo (PSL1 kapena PSL2);

Chitoliro chachitsulomtundu (wopanda msoko kapenawelded chitoliro, ndondomeko kuwotcherera enieni, chitoliro mapeto mtundu);

④Kutengera miyezo, monga GB/T 9711-2017;

⑤ kalasi yachitsulo;

⑥M'mimba mwake ndi makulidwe a khoma;

⑦Utali ndi mtundu wautali (osadulidwa kapena odulidwa);

⑧ Dziwani kufunika kogwiritsa ntchito zowonjezera.

Zitsulo chitoliro makalasi ndi zitsulo makalasi (GB/T 9711-2017)

Normative levelsteel chitsulo chitoliro kalasi kalasi yachitsulo
PSL1 L175 A25
L175P A25P
L210 A
L245 B
L290 X42
L320 x46
L360 X52
L390 x56
L415 X60
L450 x65
L485 X70
PSL2 L245R BR
L290R X42R
L245N BN
L290N X42N
L320N X46N
L360N X52N
L390N X56N
L415N X60N
L245Q Mtengo BQ
L290Q X42Q
L320Q X46Q
L360Q X52Q
L390Q X56Q
L415Q X60Q
L450Q X65Q
L485Q X70Q
L555Q X80Q
L625Q X90Q
L690Q X100M
L245M BM
L290M X42M
L320M X46M
L360M X52M
L390M X56M
L415M X60M
L450M X65M
L485M X70M
L555M X80M
L625M X90M
L690M X100M
L830M X120M

 

 


Nthawi yotumiza: Jan-30-2023

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