1. Maxaad u Dooranaysaa Tuubo Dahaadh ah - Iyo Maxay Tahay Sababta Birta Womic ay u Noqonayso Soo-saare?
Tuubo dahaadh leh ayaa isku daraysalakabka sare ee kaarboon xoog leh ama bir daawaha hooseeya(kaas oo maareeya cadaadiska, culeyska farsamada, iyo kharashka) oo lehlakabka gudaha ee daxalka u adkaysta daxalka(kaas oo si toos ah ula xiriira dareerayaasha gardarrada leh). Qaab-dhismeedkan laba-lakablaha ah wuxuu dhimayaa kharashka agabka 30-60% marka la barbar dhigo tuubada adag ee CRA, isagoo bixinaya ilaalin u dhiganta daxalka iyo cimriga adeegga.
SidaSoo saaraha tuubooyinka dahaarka lehWomic Steel si fudud uma bixiso buug-yaraha agabka. Waxaan ku bilaabaynaa xaaladaha habkaaga: H₂S, CO₂, Cl⁻, pH, heerkulka, cadaadiska, cadaadiska qayb ahaan haydarojiin, iyo shuruudaha farsamada. Markaa waxaan kugula talineynaa isku-darka ugu kalsoonida badan uguna dhaqaale badan ee birta gadaal ka ah, dahaarka CRA, iyo habka isku-xidhka.
Waayo-aragnimadeennu waxay ka timaaddaa mashaariic dhab ah - gaaska dhanaan ee xeebta, meelaha biyaha hoostooda ku xiran, kuleyliyeyaasha awoodda aadka u culus, khadadka tijaabada haydarojiinta, iyo nidaamyada duritaanka CCUS-EOR. Waxaan fahamsanahay in tuubo dahaadh leh aysan ahayn badeecad; waa badeecad la farsameeyay.
2. Habraacyada Dahaarka - Sida Aan Laba Bir Isku Xidhno
Furaha tuubo la isku halleyn karo waahabka isku xidhkainta u dhaxaysa birta gadaal iyo lakabka CRA. Hoos waxaa ku qoran afarta hab ee ugu muhiimsan ee aan isticmaalno, oo lagu kala saaray xoogga xidhmada iyo ku habboonaanta codsiga.
2.1 Shubka Centrifugal + Soo-saarista Kulul (Xidhmo Bir-la'aan ah oo aan Tolnayn)
Sida ay u shaqeyso:
Lakabka CRA marka hore waxaa si centrifugal ah loogu shubaa tuubo godan oo madhan. Tuubadan waxaa markaa la geliyaa bir kaarboon ah, la kululeeyaa, ka dibna waxaa la isku soo saaraa iyada oo loo marayo makiinado aad u weyn oo lagu shubo. Heerkulka iyo cadaadiska sare, labada birood waxay isku faafaan, iyagoo sameeya isku xidh bir ah oo dhab ah.
Astaamaha dammaanadda:
● Xoogga jarista isku-xirka ≥300 MPa (ugu sarreeya dhammaan hababka)
● Ma jiro tolmo dheer oo alxan ah - si buuxda oo aan kala go 'lahayn
● Dhumucda dahaarka isku midka ah, cabbirrada saxda ah
Ugu habboon:
Dhexroor yar ilaa dhexdhexaad ah (≤400mm – ~16″), cadaadis sare, wareegga kulaylka oo daran, adeeg haydarojiin ah, tuubooyinka kuleyliyaha, tuubooyinka godka hoose, qalabka beddela kulaylka ee U-bends.
2.2 Xidhitaanka Kulul ee Duubista + Samaynta JCOE / UOE
Sida ay u shaqeyso:
Saxanka CRA iyo saxanka birta kaarboon ayaa la nadiifiyaa, lagu ridaa faakiyuum, la shaabadeeyaa, la kululeeyaa, ka dibna waxaa la mariyaa warshad duuban. Kaararka duubista badan waxay abuuraan isku xidh bir ah. Saxanka dahaarka leh ayaa markaa loo sameeyaa tuubo iyadoo la adeegsanayo JCOE (JCO-Edge) ama mashiinka cadaadiska UOE, ka dibna waxaa ku xiga alxanka tolmada dheer.
Astaamaha dammaanadda:
● Xoogga jarista isku-xirka 200–260 MPa
● Dhexroor aad u weyn ayaa suurtagal ah (ilaa 1,800mm / 72″)
● Dherer dheer oo hal-hal ah (ilaa 24m ama ka badan)
● Waxay ka kooban tahay hal tolmo oo dherer ah (waa in la aqoonsadaa oo la hubiyaa NDT)
Ugu habboon:
Dhuumaha dhaadheer ee dhexroorka weyn, khadadka socodka biyaha hoostooda, khadadka jirridda, kor u kaca. Kani waa habka ugu ballaaran ee loo isticmaalo tuubooyinka xariiqda dahaarka leh ee shahaadaysan ee API 5LD.
2.3 Qalabka Qarxa + Duubista Saxanka
Sida ay u shaqeyso:
Saxanka CRA waxaa la dul saaraa saxan bir ah oo kaarboon ah oo leh meel bannaan oo la xisaabiyay, ka dibna waxaa lagu daboolaa walxaha qarxa. Qarxintu waxay saxanka CRA ku riixaysaa saxanka dambe xawaare sare, taasoo abuuraysa isku xidh bir ah oo hirar leh. Saxanka la dahaadhay ayaa markaa la duubaa oo lagu dhejiyaa tuubo.
Astaamaha dammaanadda:
● Isku-xirka mowjadaha leh oo leh xoog isku xidhnaan oo aad u fiican (200-280 MPa)
● Waxay ku biiri kartaa biraha kala duwan ee ay adag tahay in la isku xidho (tusaale ahaan, titanium ilaa birta, zirconium ilaa birta)
● Cabbirka saxanka waxaa xaddidaya qalabka qarxa; alxanka xiga ayaa loo baahan yahay
Ugu habboon:
Isku-darka dahaarka qalaad: titanium/bir, zirconium/bir, tantalum/bir loogu talagalay tuubooyinka kiimikada ee warshadaha kiimikada ee aadka u firfircoon iyo kuwa beddela kulaylka.
2.4 Dahaarka Farsamada (Laguma talinayo Adeegga Muhiimka ah)
Sida ay u shaqeyso:
Tuubada dahaarka ee CRA waa mid qabow lagu fidiyo ama si hawo leh loogu fidiyo gudaha tuubo bir ah oo kaarboon ah. Labada lakabba way isku dheggan yihiin iyadoo faragelintu ku habboon tahay (diiqada isku xidhka).
Astaamaha dammaanadda:
●Ma jiro xiriir bir-mareen ah- taabasho jireed oo keliya
● Xoogga xidhmada <10 MPa
● Dahaarka ayaa laalaaban kara, dumi kara, ama kala bixi kara marka heerkulku wareego ama garaaca cadaadiska uu dhaco
Marka aan isticmaalno:
Kaliya heerkulka hooseeya, cadaadiska hooseeya, adeegga aan wareegga ahayn, iyo marka macaamilku si cad u aqbalo xaddidaadaha. Had iyo jeer waxaan sharaxnaa khataraha marka la barbar dhigo tuubo bir ah oo isku xidhan.
Taladayada:Adeeg kasta oo muhiim ah oo saliid iyo gaas ah, haydarojiin, ama biyo qoto dheer ah, dooro tuubo bir ah oo isku xidhan - oo aan ahayn tuubo farsamo ahaan la safeeyey.
3. Tilmaamaha Xulashada Habka - Tixraac Degdeg ah
| Habka Isku-xidhka | Nooca Dammaanadda | Xoogga Xidhitaanka | Si aan kala go 'lahayn? | Ugu badnaan OD | Codsiga ugu Fiican |
| Dhul-mareen + Soo-saarid | Birta iyo macdanta | ≥300 MPa | Haa (tol dheer ma jiro) | ≤400mm | Baaskiilada heerkulka sare, H₂, dhexroor yar |
| Xirmo Kulul + JCOE | Birta iyo macdanta | 200–260 MPa | Maya (hal tolmo dheer) | ≤1800mm | Dhuumaha dhexroorka weyn, badda hoosteeda |
| Qarax + Rogaal celin | Birta iyo macdanta | 200–280 MPa | Maya (hal tolmo dheer) | ≤1200mm | Dahaarka Titanium / Zirconium |
| Dahaarka Farsamada | Jir ahaan (xidhiidh la'aan) | <10 MPa | No | ≤800mm | Khatar yar, isticmaal ku meel gaar ah oo yar |
Womic Steel waxay diiradda saartaadhululubo + fidin (aan tolnayn)iyoduub kulul oo xiran + JCOEsida waddooyinkayaga wax soo saarka tuubooyinka dahaarka leh ee aasaasiga ah. Waxaan qandaraas hoosaad ku siinaa dahaarka qarxa codsiyada gaarka ah ee dahaarka, had iyo jeerna leh xakamayn tayo buuxda leh.
4. Isku-darka Agabka Caadiga ah (Iyada oo ku saleysan Wax-soo-saarka Dhabta ah)
| Tixraac | Birta Dambe | Qalabka lagu dahaadho CRA | Adeegga Caadiga ah |
| #1 | P265GH (EN10216 2) | TP304L | Kuleyliyaha heerkulka hooseeya ee kuleyliyaha, beddelaha kulaylka kiimikada |
| #2 | X10CrMoVNb9 1 (T91) | UNS N08028 (Daawada 28) | Qaybta heerkulka sare ee kuleyliyaha aadka u daran, tuubooyinka kiimikada batroolka oo aad u daxal badan |
| #3 | P265GH | UNS N08825 (Incoloy 825) | Isu-imaatinka gaaska dhanaan, isku-beddelka kulaylka cadaadiska sare leh |
| #4 | API 5L X65 | Inconel 625 (UNS N06625) | Saliidda iyo gaaska biyaha qotoda dheer, qulqulka adeegga dhanaan ee badda hoosteeda |
| #5 | API 5L X65MS | Duplex 2205 | Duritaanka biyaha badda, koloriin sare + deegaanka CO₂ |
| #6 | ASTM A333 Gr.6 | 316L | Adeeg dhanaan heerkul hooseeya (-45°C) |
| #7 | API 5L X70 | 316L | Gudbinta gaaska dabiiciga ah ee macaan oo leh adeeg qoyan marmar ah |
| #8 | ASTM A335 P11 | 904L | Khad sifeeyn heerkul sare leh oo leh sulfur / chloride |
Waxaan isku waafajin karnaa isku-darka kasta marka la codsado. Soo bixi dareerahaaga, heerkulkaaga, iyo cadaadiskaaga - waxaan soo jeedin doonnaa isku-xidhka ugu habboon.
5. Xakamaynta Tayada & Tijaabinta - Waxa aan u qabanno Dufcad kasta
Annagoo ah soo-saare mas'uul ah oo soo saara tuubooyinka dahaarka leh, waxaan ku dabaqnaa nidaam kormeer iyo tijaabin oo dhammaystiran. Baaxadda hoose waxay khuseysaa tuubooyinka dahaarka leh ee birta ku xiran (labadaba si aan kala go 'lahayn iyo kuwo la alxamay).
5.1 Xaqiijinta Walxaha Cayriin
Hubinta kiimikada:Falanqaynta OES spectrometer-ka ee birta gadaal ka taagan iyo dahaarka CRA ee kuleylkiiba. Warbixinta oo dhan ayaa ku jirta.
Gariirka iyo saameynta ay ku leedahay biraha salka ah:Birta gadaal laga soo saarayo si gaar ah ayaa loo tijaabiyay; Agabka CRA waxaa xaqiijiyay shahaadada warshadda.
5.2 Xakamaynta Tayada Deymaha ee Hawlgalka Socda &
| Tijaabo | Habka | Shuruudaha Aqbalaadda |
| Xoogga xiirashada xidhka | Tijaabada riixitaanka (burbur, hal muunad halkii dufcadood ee wax soo saar ah) | ≥200 MPa oo loogu talagalay duub kulul/qarax; ≥300 MPa oo loogu talagalay centrifugal+extrusion |
| Tijaabada Ultrasonic (UT) ee isku-xirka xidhka | Sawir-qaadis jirka oo dhan oo leh baaritaanno la hagaajiyay | Kala-furid la'aan > 50mm; wadarta kala-furid ≤ 2% aagga |
| UT ee alxanka dhererka (tuubada dahaarka leh ee alxanka leh) | 100% otomaatig ah UT + xaqiijinta gacanta | Shuruudaha API 5LD / DNV |
| Hubinta muuqaalka iyo cabbirka | Dherer buuxa | OD, WT, dhumucda dahaarka, qaabka ugxan-sidaha, toosanaanta |
5.3 Tijaabinta Farsamada (Kuleylkiiba ama Dufcaddiiba)
● Gacmaha oo kala duwan:Xoogga isku-xidhka ee isku xidhan
●Tijaabada leexashada ee la hago (wajiga & xididka):Isku-xidhka alxanka (tuubada dahaarka leh ee alxanka leh)
●Sahanka adag:Dahaarka ka soo horjeeda, xariiqda xidhitaanka, iyo HAZ
●Saamaynta Charpy V-notch:Birta gadaale heerkulka la cayimay (0°C, -20°C, -40°C, -60°C)
5.4 Tijaabinta Daxalka iyo Tijaabada Dheeraadka ah (Marka la Codsado)
●Daxalka Intergranular:ASTM A262 (dahaarka Austenitic)
●Iska caabinta hoos u dhigista:CPT / CCT (loogu talagalay laba-laable / laba-laable sare)
●Imtixaanka HIC / SSC:NACE TM0284 / TM0177 oo loogu talagalay adeegga dhanaan
●Dildilaaca haydarojiinku keeno (HIC):Adeegga H₂S ee qoyan
●Cabbirka Ferrite:Loogu talagalay dahaarka laba-geesoodka ah
5.5 Tijaabada Hydrostatic-ka
●Cadaadis:Cadaadiska naqshadaynta 1.5× (ama sida ku xusan koodka khuseeya)
●Waqtiga sugitaanka:Ugu yaraan 10 ilbiriqsi, ma jiraan wax daadasho ah
●Diiwaanka:Tuubo kasta si gaar ah ayaa loo duubay; warbixin ayaa ku jirta
5.6 Diyaargarow Dhammaad iyo Sii-deyn Kama Dambays ah
1. Ku celcelinta:Sawir kasta (API 5L, ASME, ama gaar ah)
2. Subagga CRA (ikhtiyaar):Dahaarka xariijinta ku salaysan nikkel ee wejiga bevel si looga hortago milmida inta lagu jiro alxanka goobta
3. Calaamadaynta:Shaambad Stencil / cadaadis hooseeya - heerka, heerka, nooca dahaarka, lambarka kulaylka, dhererka, soo saaraha
4. Ilaalinta:Daboolka ugu dambeeya + saliidda ka hortagga miridhku (haddii aan la dahaadhin)
5. Dukumenti Tayo leh oo la socda rarista:
● Shahaadada EN 10204 Nooca 3.1 (kiimikada, tensile, saamaynta, jarista xidhmada, UT, hydro)
● Warbixinnada NDT (Khariidadaha UT, MT/PT haddii ay khuseyso)
● Warbixinta kormeerka cabbirka
● Jaantusyada daaweynta kulaylka
● Sawirro diyaar garow dhammaadka iyo baakadaha
● Ikhtiyaar: EN 10204 Nooca 3.2 oo leh markhaati saddexaad (SGS, BV, DNV, TÜV)
6. Awoodaha Wax Soo Saarka - Sababta Birta Womic
| Awoodda | Faahfaahinta |
| Tuubo aan tolnayn oo dahaadh leh (centrifugal + extrusion) | OD 60–400mm, dhumucda derbiga ilaa 40mm, dhererka ugu badan waa 15m |
| Tuubo la isku qurxiyey oo la isku qurxiyey (duul kulul + JCOE) | OD 400–1,800mm, dhumucda derbiga ilaa 60mm, dhererka ugu badan 24m |
| Qalabka dahaarka lagu dhejiyo | Biraha aan la karin, laba-laab, birta nickel, titanium (haddii la codsado) |
| Biraha taageerada leh | API 5L, ASTM A106/A333/A335, EN10216-2, T91, chrome-moly |
| Awoodda sanadlaha ah | 15,000+ tan oo tuubo dahaadh ah (aan tolnayn + la alxamayn) |
| Shahaadooyinka | ISO 9001, PED, API 5LD (oo hoos yimaada codsiga / u qalma), aqoon-is-weydaarsi ay ansixisay DNV |
| Kormeerka dhinac saddexaad | SGS, BV, DNV, TÜV, ABS, LR - waxaa laga heli karaa qiimaha soo saaraha ama biilka tooska ah |
7. Codsiyada & Tixraacyada Mashruuca
7.1 Ururinta Gaaska Dhanaan ee Xeebta
Tusaale:Gaaska H₂S / CO₂ ee ugu sarreeya Koonfur-galbeed Shiinaha.
Caqabad:Birta kaarboonka caadiga ah si dhakhso ah ayay u mirdheen; tuubooyinka adag ee 825 ama 625 aad bay qaali u ahaayeen.
Xalka:Tuubo dhejis ah - X65MS oo gadaal u taagan + Incoloy 825 oo dahaadh ah, duub kulul oo xiran + JCOE.
Natiijo:35 km oo dhuumaha la rakibay, 2 sano oo adeeg ah, ma jiraan wax daxal ah oo gudaha ah.
7.2 Khadadka Socodka Biyaha Qotoda Dheer
Tusaale:Horumarinta Badda Koonfurta Shiinaha (qoto dheer oo biyo ah 1,500m).
Caqabad:Adeeg dhanaan, cadaadis sare, rakibid heerkul hooseeya, iyo rarista daalka.
Xalka:Tuubo aan simbiriirixan lahayn - X65 oo leh taageero aan kala go 'lahayn + Inconel 625 oo lagu dahaadhay centrifugal + extrusion.
Natiijo:Si guul leh ayaa loogu rakibay habka dib u dhiska, waxaana la guddoonsiiyay falanqaynta daalka DNV.
7.3 Kuleyliyaha Sare ee Kuleyliyaha Sare ee Aad u-Xushaysan
Tusaale:Dib-u-habayn lagu sameeyay cutub dhuxul ah oo 1,000MW ah.
Caqabad:Oxidation dhinaca uumiga + daxalka dhibicda ceeryaamo ee gaaska qiiqa.
Xalka:Dahaarka gudaha ee T91 dibadda + Dahabka 28, oo aan kala go 'lahayn.
Natiijo:Waxay shaqaynaysay in ka badan 3 sano iyada oo aan lahayn cillad tuubo.
7.4 Khadka Tijaabada Gudbinta Haydarojiin
Tusaale:Wareegga tijaabada dhuumaha haydarojiin ee fadhigiisu yahay Shiinaha.
Caqabad:Khatarta ah in haydarojiinku uu libdho, dahaarka gudaha looma oggola.
Xalka:Tuubo P265GH + 316L ah oo dahaadh leh (aan tolnayn).
Natiijo:Waxaan ka gudbay 100% qiimaynta iswaafajinta UT iyo hydrogen.
Dhuumaha duritaanka CCUS-EOR CO₂ 7.5
Tusaale:DaqingMashruuca isticmaalka iyo kaydinta kaarboonka.
Caqabad:CO₂ qalalan oo leh wasakh waxay u baahan tahay dusha sare ee gudaha ee u adkaysta daxalka, iyo cadaadis sare.
Xalka:Tuubo X65 + 316L ah oo daboolan (oo duub kulul lagu xidhay).
Natiijo:Waxaa la keenay 12 km oo tuubo dahaadh ah, oo hadda lagu tallaalayo.
8. Su'aalaha Badiya La Weydiiyo (FAQ)
S1: Waa maxay faraqa dhabta ah ee u dhexeeya tuubo bir ah oo isku xidhan iyo tuubo farsamo ahaan loo dahaadhay?
J: Tuubada birta ku xidhan waxay leedahay lakab faafin heer-atomik ah (xoogga jarista >200 MPa). Ma dillaaci doonto marka uu socdo wareegga kulaylka ama garaaca cadaadiska. Tuubada farsamaysan waxay ku tiirsan tahay ku habboonaanta is-jiidjiidka - way laalaabi kartaa, burburi kartaa ama kala bixi kartaa marka la kululeeyo ama la wareego. Si aad u hesho adeeg saliid iyo gaas, haydarojiin, ama biyo qoto dheer, had iyo jeer dooro isku xidhka birta.
S2: Waa maxay habka siiya xoogga xidhmada ugu sarreeya?
A: Tuurista dhul-daaqsimeedka + xoqidda kulul (aan tolnayn) badanaa waxay bixisaa ≥300 MPa. Xidhmada duubka kulul waxay bixisaa 200–260 MPa. Labaduba waxay ku habboon yihiin tuubooyinka shahaadada haysta ee API 5LD. Dahaarka qarxa wuxuu bixiyaa 200–280 MPa oo leh is-dhexgal mowjado leh.
S3: Ma samayn kartaa tuubo dahaadh ah oo leh lakab gudaha ah oo titanium ah ama zirconium ah?
J: Haa, laakiin kuwani waxaa badanaa lagu soo saaraa dahaarka qarxa + duubista saxanka. Waqtiga rasaastu waa ka dheer yahay. Waxaan khibrad u leenahay tuubo bir ah oo titanium ah oo loogu talagalay qaboojinta biyaha badda iyo warshadaha kiimikada.
S4: Sidee baad uga hortagtaa daxalka alxanka goobta ee kala-goysyada?
J: Waxaan bixinaa subag ikhtiyaari ah oo CRA ah (alxanka dahaarka leh ee xarigga ah) oo ku yaal bevel-ka tuubada. Tani waxay ku daraysaa lakab bir ah oo buuxinta birta ah (tusaale ahaan, Alloy 625) wejiga bevel-ka, taasoo ka hortagaysa in CRA uu ku milmo birta kaarboon inta lagu jiro alxanka goobta. Kala-goyska alxanka ayaa markaa leh iska caabin daxaleed oo la mid ah jirka tuubada.
S5: Dukumenti noocee ah ayaad bixisaa?
A: Waxaan bixinaa fayl tayo leh oo dhammaystiran sida ku xusan Qaybta 5.6. Amarrada la kormeeray ee dhinac saddexaad, waxaan soo saarnaa shahaadooyinka EN 10204 Nooca 3.2 oo ay saxiixday hay'adda kormeerka.
S6: Waa maxay waqtiga caadiga ah ee hogaaminta?
J: Isku-darka caadiga ah (tusaale ahaan, X65+316L, duub kulul oo xiran): dalabka koowaad 8-12 toddobaad, ku celi dalabaadka 6-8 toddobaad. Tuubo aan kala go 'lahayn oo dahaadh ah (centrifugal + extrusion): 12 16 toddobaad dalabka koowaad. Daloolada gaarka ah (titanium, Hastelloy) ku dar 4-6 toddobaad.
S7: Ma aqbashaa dalabaadka tijaabada yar yar?
J: Haa. Waxaan ku bilaabi karnaa 20-30 mitir si aan u helno tijaabo u qalmid ama mid wax burburisa. Waqtiga ugu dambeeya ee dalabka tijaabada ayaa laga yaabaa inuu xoogaa ka dheeraado dejinta awgeed.
9. Baakadeynta iyo Rarista
●Ilaalinta dusha sare:Saliid ka hortagta miridhku oo saaran dusha sare ee birta ah; dusha sare ee gudaha ee CRA waxay ahaanaysaa mid qalalan ama nitrogen ayaa xiran.
●Daboolka ugu dambeeya:Koofiyado balaastig ah oo qaro weyn oo lagu xiray xargaha birta ah.
● Isku-xidhka:Dhexroorrada yaryar (ilaa 8 inji), xidhmooyin hex ah oo leh meelo kala fog oo alwaax ah. Dhexroorrada waaweyn, sariiro gaar ah oo taageero ah.
● Baakadaha weelka:Weelasha 20′ ama 40′ oo leh bacaha dunnage iyo suunka birta ah.
● Jab raafka weyn / fidsan:Dhexroorka weyn (≥24″) ama tuubo derbi culus.
● Calaamadaynta:Stencil kasta oo API ah 5LD / shuruudaha macaamiisha. Lambarka kulaylka waxaa laga heli karaa mitir kasta.
10. La xiriir Womic Steel – Soo-saaraha Tuubada Dharka lagu xidho
Ma raadineysaa soo-saare tuubooyin ah oo lagu kalsoonaan karo oo ku hagi kara habka saxda ah ee isku-xidhka, isku-xidhka agabka, iyo heerka kormeerka? Nala soo xiriir shuruudaha mashruucaaga.
Mareegta: www.womicsteel.com
Iimayl: sales@womicsteel.com
Taleefan / WhatsApp / WeChat:
Victor: +86 15575100681
Jack: +86 18390957568
Birta Womic - Xalalka tuubooyinka 316L ee loogu talagalay adeegga CO₂, kuleyliyaha, beddelaha kulaylka, heerkulka hooseeya, iyo codsiyada heerkulka sare.
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