DNV-OS-F101 L450 SAWL Tuubada Birta ee Duuban ee Badda Hoose: Awoodaha Wax Soo Saarka & Tilmaamaha Badeecada Sawirka La Soo Bandhigay

DNV-OS-F101 L450 SAWL Tuubooyinka Birta ee Badda Hoose: Awoodaha Wax Soo Saarka & Tilmaamaha Badeecada

Sharaxaad Gaaban:

Womic Steel waxay bixisaa tuubo bir ah oo tayo sare leh oo DNV-OS-F101 L450 SAWL (Submerged Arc Welded Longitudinal) ah oo loogu talagalay codsiyada dhuumaha badda hoosteeda iyo kuwa badda. L450 waxay bixisaa xoogga wax soo saarka ugu yar ee 450 MPa (65,300 psi), oo u dhiganta API 5L X65, iyadoo leh shuruudo dheeraad ah oo loogu talagalay isticmaalka badda oo ay ku jiraan adkaanta jabka (CTOD), iska caabbinta burburka, iyo waxqabadka daalka. Habka SAWL (LSAW) wuxuu adeegsadaa sameynta UOE ama JCOE oo leh ballaarin farsamo si loo gaaro dulqaad cabbir adag oo muhiim u ah rakibidda biyaha qoto dheer. Dhexroorka dibadda laga bilaabo 219mm ilaa 1,220mm (8″ – 48″) ee UOE, dhumucda derbiga laga bilaabo 6.0mm ilaa 40mm, dherer ilaa 24m. Shahaadada warshadda oo leh EN 10204 3.2, 100% UT oo leh TOFD, tijaabada biyaha, tijaabada CTOD, DWTT, iyo raad-raac buuxa. Ku habboon khadadka dhoofinta gaaska biyaha qoto dheer, khadadka socodka biyaha hoostooda, kuwa ka soo baxa xeebaha, iyo dhuumaha isku xidha dhulka.

Cabbirka Tuubada Birta ah ee LSAW:Dhexroorka Dibadda: 219mm – 1,220mm (8″ – 48″) UOE; ilaa 1,600mm (63″) JCOE/saxanka duuban, Dhumucda Darbiga: 6.0mm – 40mm (UOE), ilaa 60mm JCOE, Dhererka: 12m – 24m heerka

Heerka & Heerka Tuubooyinka Birta ah ee LSAW:DNV-OS-F101 L450 (oo u dhiganta API 5L X65); sidoo kale L360, L415, L485 ayaa la heli karaa; oo leh adeeg dheeri ah oo dhanaan ah oo ikhtiyaari ah

Isticmaalka Tuubooyinka Birta ah ee LSAW:Dhuumaha dhoofinta gaaska biyaha qotoda dheer (qoto dheer biyaha > 1,000m), khadadka socodka saliidda iyo gaaska ee badda hoosteeda, kor u kaca xeebaha (firfircoon iyo mid aan degganayn), dhuumaha isku xirka dhulka, xirmooyinka dhuumaha, hababka xeebta (tuubooyinka ka gudbaya aagga biyaha), isku xirka madal ee badda

Womic Steel waxay bixisaa qiimo tayo sare leh & tartan ah oo ah tuubo bir ah oo DNV-OS-F101 L450 SAWL ah, tuubo xariiqda badda hoosteeda ah, tuubo badda hoosteeda ah oo UOE ah, tuubo shahaadaysan oo DNV ah. Shahaadada warshadda EN 10204 3.2, tijaabada biyaha, UT/TOFD, CTOD, DWTT, dhammaadka godan, dahaarka 3LPE/3LPP ayaa diyaar ah. Sahay toos ah oo warshadeed oo loogu talagalay mashaariicda EPC ee xeebaha adduunka oo dhan.

Noo soo dir emayl Qeexitaannada Badeecada

Faahfaahinta Badeecada

Calaamadaha Alaabta

1. Birta Womic: Awoodaha Wax Soo Saarka & Xoogga Shirkadda

Womic Steel Group waxay haysataa oggolaanshaha DNV GL ee soo saarista tuubooyinka SAWL sida waafaqsan DNV-OS-F101. Heerkani wuxuu leeyahay shuruudo ka adag API 5L ee dhuumaha badda, oo ay ku jiraan:

● Dulqaadyo cabbir oo adag (ubax ≤ 0.2% UOE, ≤ 0.3% JCOE)

● Tijaabinta adkaanta jabka ee qasabka ah (CTOD - Barakaca Furitaanka Talada Dildilaaca)

● Baahida tamarta ee saamaynta sare leh (badanaa 50J daqiiqo at -20°C)

● Xaddidaad adag oo alxanka ah (badanaa ≤ 85 HRB adeegga dhanaan, ≤ 90 HRB haddii aan dhanaan ahayn)

● Raad-raac buuxa laga bilaabo saxan ilaa tuubo dhammaystiran

● Sahan dhinac saddexaad ah oo ay sameeyeen DNV ama bulsho kale oo la aqoonsan yahay oo kala-soocid ah

Hawsha wax soo saarka: UOE (waxaa loo door bidaa biyaha qoto dheer sababtoo ah wareegsanaan sare iyo cadaadis haraaga oo hooseeya) iyo JCOE. Khadka UOE ee Womic wuxuu ka kooban yahay O-press-ka hydraulic (6,000t) iyo balaarin farsamo (72 qaybood) oo gaaraya ovality ±0.15%.

Awoodda LSAW ee sanadlaha ah ee shahaadaysan ee DNV:40,000 oo tan.

Dabacsanaanta Wax Soo Saarka ee DNV-OS-F101 L450:

● UOE: 508–1,220mm OD × 6.0–40.0mm WT × ≤ 24m (waxaa loo doorbidayaa biyaha qotoda dheer)

● JCOE: 406–1,422mm OD × 6.0–50.8mm WT × ≤ 18m (biyo gacmeed iyo marinnada xeebta)

● Dhammaan tuubooyinka waxay helaan 100% UT oo leh TOFD, hydrotest, iyo CTOD sida loogu baahdo.

2. DNV-OS-F101 L450: Qaab-dhismeedka Agabka & Astaamaha Waxqabadka

DNV-OS-F101 L450 waxay la mid tahay API 5L X65 laakiin waxaa ku jira shuruudo dheeraad ah oo loogu talagalay isticmaalka badda. Magaca "L" wuxuu tilmaamayaa tuubada xariiqda, "450" waa xoogga wax soo saarka ugu yar ee MPa.

Halabuurka Kiimikada (ugu badnaan boqolkiiba cuf ahaan, sida caadiga ah L450):

Walax	DNV-OS-F101 L450 (caadi ah)	Adeegga Dhadhanka (ikhtiyaar)
C	≤ 0.12 (caadi ahaan 0.06-0.10)	≤ 0.10
Mn	≤ 1.60	≤ 1.40
P	≤ 0.025	≤ 0.020
S	≤ 0.015	≤ 0.003
Si	≤ 0.45	0.20-0.40
Nb+V+Ti	≤ 0.12	≤ 0.10
CEV	≤ 0.43	≤ 0.40

Sifooyinka Farsamada (Heerkulka Qolka):

Hantida	DNV-OS-F101 L450
Xoogga Wax Soo Saarka (daqiiqad)	450 MPa (65,300 psi)
Xoogga Wax Soo Saarka (ugu badnaan)	575 MPa (83,400 psi)
Xoogga Tijaabada (daqiiqad)	535 MPa (77,600 psi)
Kordhinta (ugu yaraan)	18% (cabirka 50mm)
Adkaanta (ugu badnaan) - aan dhanaan lahayn	90 HRB
Adkaanta (ugu badnaan) - adeeg dhanaan	85 HRB (caadi ah)

Shuruudaha Adkaanta Jabka (DNV-OS-F101):

Tijaabo	Heerkulka	Aqbalaadda
Charpy V-Notch (cabbirka buuxa)	0°C ama -20°C	Celcelis ahaan ≥ 50J, hal ≥ 38J (caadi ah)
CTOD (birta alxanka iyo HAZ)	-20°C ama ka hooseeya	δ ≥ 0.25mm (weld), δ ≥ 0.30mm (HAZ)
DWTT (faafinta jabka)	-20°C	Aagga xiirashada ≥ 85%

Qiimayaashani waa kuwo mashruuc gaar ah u leh. Womic waxay u qalmi kartaa shuruudaha macaamiisha.

3. U hoggaansanaanta Heerka Cabbirka iyo Heerarka

Shay	Faahfaahinta
Heerka Caadiga ah	DNV-OS-F101 (Heerka Offshore) - Tuubooyinka SAWL
Habraacyada Wax Soo Saarka	UOE (la doorbidayo), JCOE
Kala duwanaanshaha Dhexroorka Dibadda	508mm – 1,220mm (20″ – 48″) oo loogu talagalay UOE; 406mm – 1,422mm oo loogu talagalay JCOE
Kala duwanaanshaha Dhumucda Darbiga	6.0mm – 40mm (UOE); ilaa 50.8mm (JCOE)
Kala Duwanaanta Dhererka	Heerka caadiga ah: 12m, 18m, 24m (UOE); ilaa 18m (JCOE)
Dhammaadka Dhammaadka	Dhamaadka La Jaray (BE) halkii DNV-OS-F101
Dhammaadka Dusha Sare	3LPE, 3LPP, FBE, ama qaawan (oo leh ilaalin ku meel gaar ah oo daxalka ah)
Dulqaadka (DNV)	OD: ±0.2% (UOE), ±0.5% (JCOE); Uvality: ≤ 0.2% (UOE), ≤ 0.3% (JCOE); WT: -0% / + 12.5% (ka adag API); Dhererka: +50mm / -0mm

4. Cabbirrada iyo Tilmaamaha La Heli Karo – DNV-OS-F101 L450 SAWL Bir Tuubo ah

OD (mm)	Xulashooyinka WT (mm)	Geedi socodka	Miisaanka Qiyaas ah (kg/m)	Dhererka Caadiga ah	Codsiga Caadiga ah ee Dibadda
508	10.0, 12.5, 14.0, 16.0, 19.0	EUE	122.8 – 229.1	12m / 18m / 24m	Khadka socodka biyaha hoostooda
610	12.5, 14.0, 16.0, 19.0, 22.0, 25.4	EUE	184.2 – 366.2	12m / 18m / 24m	Khadka dhoofinta gaaska
711	14.0, 16.0, 19.0, 22.0, 25.4, 28.0	EUE	240.7 – 471.7	12m / 18m	Kor u kaca biyaha qoto dheer
813	16.0, 19.0, 22.0, 25.4, 30.0, 32.0	UOE/JCOE	314.4 – 616.2	12m / 18m	Dhoofinta ugu weyn
914	19.0, 22.0, 25.4, 30.0, 35.0, 38.0	JCOE	419.5 – 820.9	12m / 18m	Dhexroor weyn
1,016	22.0, 25.4, 30.0, 35.0, 40.0	JCOE	539.2 – 963.9	12m	Biyo qoto dheer oo aad u qoto dheer
1,220	25.4, 30.0, 35.0, 40.0	JCOE	748.4 – 1,164.6	12m	Jirridda biyaha qoto dheer

Biyaha qoto dheer (qoto dheer oo biyaha ah > 1,000m), UOE si xooggan ayaa loogu talinayaa sababtoo ah dulqaadka ugxan-sidaha oo adag (≤ 0.2%). Biyaha gacmeedka yar (< 500m), JCOE waa la aqbali karaa.

5. Heerarka Caadiga ah ee Dhuumaha Badda Hoose ee Xeebaha

Heerka Caadiga ah	Darajooyinka Birta	Codsiga Caadiga ah
DNV-OS-F101	L360, L415, L450, L485	Dhuumaha biyaha hoostooda, kor u kaca
API 5L PSL2	X52, X60, X65, X70	Xeebaha (aan adagayn)
ISO 3183	L360, L415, L450, L485	Dibadda caalamiga ah
NORSOK M-120	X65, X70	Tuubooyinka madal ee badda
BS 7191	L360, L450	Dhuumaha Biyaha ee Badda Waqooyi

Soo koobidda isticmaalka:Dhoofinta gaaska biyaha qotoda dheer, marinnada socodka biyaha hoostooda, kor u kaca firfircoon, hababka xeebta, dhuumaha isku xidhka dhulka.

6. Habka Wax Soo Saarka - UOE (La Doorbidayo) ee DNV-OS-F101 L450

DNV-OS-F101 waxay u baahan tahay kontaroolo adag marka loo eego API 5L. UOE waa habka la doorbido.

Tallaabooyinka Habka UOE ee Tuubooyinka Xeebaha:

1. Kormeerka saxanka- Hubinta dahaarka Ultrasonic, xaqiijinta kiimikada, jilicsanaanta iyo tijaabada Charpy heerkul cayiman.

2. Shiididda Edge- Saxnaanta J-bevel (±0.3mm) si loo helo marin alxan oo joogto ah.

3. U-riixitaan– 4,000t oo ah taarikada cadaadiska oo qaab U ah.

4.O-riixitaan– 6,000t oo cadaadis ah ayaa u xidhma qaab dhululubo ah.

5. Alxanka Tack- Qalab ku meel gaar ah si loo ilaaliyo qaab-dhismeedka.

6. Alxanka gudaha ee SAW– Kuleylka la xakameeyey (≤ 2.5 kJ/mm X65/L450).

7. Dib-u-soo-celin– Qaanso farsamo ama hawo, oo ay ku xigto shiidi.

8. Alxanka SAW ee Dibadda- Baas badan sida loogu baahdo.

9. Ballaarinta farsamada– Ballaariyaha qaybta 72, koror 0.8-1.2% OD ah. Wuxuu gaaraa qaab-dhismeedka ≤ 0.2%.

10.100% UT oo leh TOFD- Iskaanka otomaatiga ah ee mugga alxanka oo dhan.

11. Tijaabada Hydrostatic– Sida ku cad DNV-OS-F101 (badanaa 90-100% SMYS).

12. Baaritaanka CTOD– Birta alxanka iyo HAZ heerkulka la cayimay (tusaale ahaan, -20°C).

13.DWTT– Si loo xakameeyo faafitaanka jabka.

14. Kormeerka cabbirka kama dambaysta ah– OD, qaabka ugxan-sidaha, WT, dhererka, toosanaanta.

15.Dahaaridda– 3LPE/3LPP ayaa lagu dabaqay barxad gaar ah.

Farqiga Muhiimka ah ee API 5L ee DNV:

● Ubax adag (0.2% vs 0.5% API-ga xeebta)

● CTOD qasab ah (uma baahna API 5L)

● Shuruudaha sare ee Charpy (badanaa 50J iyo 27J)

● Xakamaynta adag ee adeegga dhanaan

● Raad-raac dhammaystiran oo agab ah oo leh dhibco markhaati ah oo sahamin ah

7. Xakamaynta Tayada iyo Tijaabinta Tuubada DNV-OS-F101 L450 SAWL

Masraxa	Kormeerka	Shuruudaha DNV
Saxan	Falanqaynta Kiimikada	Xaqiiji halabuurka sida ku cad DNV-OS-F101
Saxan	Gariir	Wax soo saar ≥ 450 MPa, Gariir ≥ 535 MPa
Saxan	Charpy @ -20°C	Celcelis ahaan ≥ 50J, ≥ 38J hal
Saxan	Ultrasonic-ka	Lamaanadaha aan la ogolayn ma jiraan
Alxanka	100% UT oo leh TOFD	Iskaan garee mugga alxanka oo dhan, duub dhammaan tilmaamaha
Alxanka	Baaritaanka Raajada (goob)	Xaqiijin dheeraad ah
Alxanka	Adkaanta (alxanka, HAZ, BM)	≤ 90 HRB (aan ahayn dhanaan) / ≤ 85 HRB (dhanaan)
Dhammaatay	Imtixaanka Hydrostatic-ka	90-100% SMYS, waqtiga haynta sida caadiga ah
Dhammaatay	CTOD (alxanka iyo HAZ)	δ ≥ 0.25mm (weld), δ ≥ 0.30mm (HAZ) @ heerkulka tijaabada
Dhammaatay	DWTT (haddii loo baahdo)	Aagga xiirashada ≥ 85%
Dhammaatay	Sahan cabbireed	Waxaa goobjoog ka ahaa sahaminaha DNV

Dhammaan tijaabooyinka waxaa markhaati ka ah DNV ama dhinac saddexaad oo macmiilku magacaabay (SGS, BV, ABS). Shahaadada EN 10204 Nooca 3.2 oo lagu bixiyay shaambadda DNV.

8. Codsiyada Aasaasiga ah – DNV-OS-F101 L450 SAWL Bir Tuubo ah

●Dhuumaha dhoofinta gaaska biyaha qotoda dheer- Gaadiid gaaska dabiiciga ah laga soo qaado beeraha biyaha qotoda dheer (> 1,000m) ilaa terminaalka xeebta

● Qadadka shidaalka iyo gaaska ee badda hoosteeda- Ku xidhidda geedaha badda hoosteeda ku yaal ee mandiiladaha iyo saldhigyada riser-ka

● Kor u kaca firfircoon iyo kuwa aan joogtada ahayn- Qaybo toosan oo ka bilaabma salka badda ilaa goobta (CTOD iyo daalku waa muhiim)

● Dhuumaha Interfield- Isku xirka goobo badan oo ku yaal gobol gudahiisa

● Qaababka xeebta- Dhuumaha ayaa ka gudbaya aagga biyaha iyo meelaha hirarka (waxay u baahan yihiin dahaadh iyo dahaadh miisaan oo shub ah)

● Xirmooyinka dhuumaha- Khadad badan oo ku jira tuubo side (L450 sida side)

● Xirmooyinka madal ee badda- Ku xidhidda tuubooyinka madal ee dhuumaha badda hoosteeda

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9. Baakadaha & Maraakiibta - DNV Offshore Pipe

Tuubooyinka waxaa lagu raraa maraakiib jabtay iyadoo kormeeraha DNV uu ku sameynayo rarista. Tuubo kasta si gaar ah ayaa loogu taageeraa dun alwaax ah oo caag lagu dahaadhay. Daboolka dhammaadka waxaa lagu dahaadhay bir (si looga hortago dhaawaca bevel). Tuubooyinka dahaarka leh waxay leeyihiin duub xumbo dheeraad ah. Dukumentiyada waxaa ka mid ah warbixinnada sahanka DNV iyo MTC 3.2.

10. Faa'iidooyinka iyo Su'aalaha Badiya La Weydiiyo ee Birta Womic – DNV-OS-F101 L450 SAWL Pipe

Maxaa Birta Womic loogu talagalay DNV Offshore Pipe?

● Soo-saare DNV GL ah oo loo oggolaaday tuubooyinka SAWL

● Habka UOE oo leh 6,000t O-press iyo 72-qaybood oo ballaarinaya - qaabka ugxan-sidaha ≤ 0.15%

● Awoodda baaritaanka CTOD ee gudaha (shaybaarka CNAS ee la aqoonsan yahay)

● Rikoor ballaaran oo ku saabsan mashaariicda Badda Waqooyi, Brazil, iyo Galbeedka Afrika

● Sahan dhinac saddexaad ah oo ay sameeyeen DNV, ABS, BV, ama wakiilka macmiilka

● U hoggaansanaanta buuxda ee DNV-OS-F101 (oo ay ku jiraan Lifaaqa A, B, D sida loogu baahdo)

Su'aalaha Badiya La Weydiiyo:

S: Waa maxay faraqa u dhexeeya DNV-OS-F101 L450 iyo API 5L X65 ee badda hoosteeda?
A: DNV-OS-F101 waxaa si gaar ah loogu qoray dhuumaha badda. Kala duwanaanshaha ugu muhiimsan: dulqaadka ovality-ga oo adag (0.2% vs 0.5%), tijaabada adag ee CTOD ee qasabka ah (uma baahna API 5L), shuruudaha saamaynta Charpy oo sarreeya (badanaa 50J vs 27J), shuruudaha dheeraadka ah ee iska caabbinta burburka iyo naqshadeynta daalka. Mashaariicda biyaha qotoda dheer, DNV waa heerka la doorbido.

S: Ma bixisaa tijaabada CTOD ee biraha alxanka iyo HAZ?
J: Haa. Waxaan sameynaa tijaabada CTOD (Qalalaasaha Furitaanka Tip) sida ku cad BS 7448 ama ASTM E1820. Waxaan ku tijaabin karnaa -20°C, -30°C, -46°C, ama sida ku cad. Natiijooyinka caadiga ah: biraha alxanka δ ≥ 0.35mm, HAZ δ ≥ 0.40mm. Tijaabada CTOD waxaa markhaati ka ah sahmiyaha DNV.

S: Ma ku siin kartaa L450 adeegga dhanaan (H₂S)?
J: Haa. Waxaan bixinaa L450 oo leh kabitaan adeeg dhanaan ah sida ku cad Lifaaqa A ee DNV-OS-F101. Tani waxay u baahan tahay CEV hooseeya (≤ 0.40%), ku darid Mo (0.15-0.25%), PWHT, adkaanta ≤ 85 HRB, iyo tijaabada HIC/SSC. Waxaan bixinay adeeg dhanaan L450 mashaariicda badda Waqooyi iyo Bariga Dhexe.

S: Waa maxay qoto dheerka biyaha ugu badan ee tuubooyinkaagu u adkaysan karaan?
A: Iska caabbinta burburka waxay ku xiran tahay saamiga D/t (dhexroorka/dhumucda derbiga), qaabka u eg, iyo xoogga wax soo saarka. Tuubada caadiga ah ee L450 UOE oo leh D/t = 30 (tusaale ahaan, 610mm × 20mm) iyo qaabka u eg 0.2%, cadaadiska burburka wuxuu ka badan yahay 30 MPa (oo u dhiganta qoto dheer oo biyo ah 3,000m). Biyaha qoto dheer, waxaan naqshadeyn karnaa derbiyo qaro weyn ama qaab u eg. Fadlan bixi qoto dheer oo biyahaaga ah iyo cadaadiska naqshadeynta si loo falanqeeyo burburka.

S: Ma loo baahan yahay sahanka DNV marka la dhoofinayo badeecad kasta?
J: DNV-OS-F101 waxay u baahan tahay in soo-saaruhu uu haysto nidaam tayo oo la ansixiyay iyo in wax soo saarka ay sahamiso DNV meelaha lagu qeexay markhaatiyada (tusaale ahaan, baaritaanka hydrostatic, CTOD, kormeerka cabbirka). Xarunta Womic waxaa sanad walba hubiya DNV. Dalab kasta, waxaan la shaqeynaa sahamiyayaasha DNV si ay u marag furaan baaritaannada loo baahan yahay. Waxaan sidoo kale diyaarin karnaa sahanka ABS, BV, ama LR marka macmiilku codsado.

S: Waa maxay waqtiga caadiga ah ee hogaanka ee tuubooyinka L450 ee shahaadada DNV?
J: 90-120 maalmood, oo ay ku jirto jadwalka sahanka DNV. Waqtiga hogaamintu wuxuu ku xiran yahay helitaanka saxannada (taarikada TMCP ee dibadda waxay leeyihiin waqtiyo rasaas ah oo dheer, badanaa 10-14 toddobaad). Tijaabada CTOD waxay ku daraysaa 2-3 toddobaad. Dalabyada soo noqnoqda ee leh saxanno hore loo sii diyaariyey, waqtiga rasaasta waxaa loo dhimi karaa 60-75 maalmood.

Tixraaca Mashruuca - Dhuumaha Dhoofinta Gaaska Qoto Dheer ee Galbeedka Afrika (Gacanka Guinea)

Dalka:Xeebta Nayjeeriya / Aagga xuduudda ee Equatorial Guinea (Gacanka Guinea)
Heerka & Darajada:DNV-OS-F101 L450 SAWL (UOE) oo leh kaabis adeeg dhanaan ah
Cabbirka iyo Tirada:

l OD 610mm (24″) × Miisaan 20.6mm – 52,000 mitir (qiyaastii 13,500 tan) oo ay soo saartay habka UOE

l OD 610mm (24″) × Miisaan 25.4mm – 8,000 mitir (qiyaastii 2,500 tan) oo ay soo saartay habka UOE (qaybta kor u kaca iyo habka xeebta)
Wadarta:60,000 mitir (60 km), qiyaastii 16,000 tan

Tilmaamaha:Dahaarka 3LPE ee dibadda (3.2mm) oo leh dahaar miisaan shub ah (60mm, cufnaanta 3,050 kg/m³) si loo helo dabacsanaan taban. Dhammaadyo godan 30°/1.6mm. Tijaabinta biyaha ee 25.0 MPa (cadaadiska naqshadeynta 18.0 MPa). Qoto dheer ee biyaha: 800-1,400m. Charpy qasab ah -20°C (ugu yaraan 50J, la gaaray 120-180J). CTOD at -20°C: bir alxan ah ≥ 0.25mm, HAZ ≥ 0.30mm (la gaaray 0.40-0.65mm). DWTT at -20°C: aagga xiirashada ≥ 85% (la gaaray 90-98%). Uvality ≤ 0.2% (UOE la gaaray 0.08-0.15%). Adkaanta ≤ 85 HRB (adeeg dhanaan). HIC halkii NACE TM0284: CLR 0%, CTR 0%, CSR 0%. SSC halkii NACE TM0177: ma jiro dildilaac. 100% UT oo leh TOFD, oo lagu daray 25% RT. Sahan dhinac saddexaad ah oo ay samaysay DNV GL inta lagu jiro wax soo saarka.

Codsiga:Dhuumaha dhoofinta gaaska biyaha qotoda dheer ee qaada gaaska dabiiciga ah ee ka imanaya beeraha badda (qoto dheer oo biyaha ah 800-1,400m) una geeya terminaalka LNG ee xeebta. Dhuumaha 60 km waxaa ku jira qayb muhiim ah oo biyaha qotoda dheer ah (52 km, 20.6mm WT), qayb firfircoon oo kor u kacda (4 km, 25.4mm WT), iyo hab xeebeed oo dhex mara aagga biyaha (4 km, 25.4mm WT oo leh dahaadh shub ah). Gaasku wuxuu ka kooban yahay raad H₂S (5-10 ppm) iyo CO₂ (3-5%), taasoo u baahan shahaadada adeegga dhanaan.

Caqabadaha Farsamada iyo Xalalka:

1. Iska caabbinta burburka biyaha qotoda dheer (qoto dheer oo biyo ah 1,400m)– Cadaadiska hydrostatic-ka ee dibadda ee 1,400m waa qiyaastii 14.3 MPa. Cadaadiska burburka ee loo baahan yahay oo leh qodobka badbaadada waa > 25 MPa. Womic waxay naqshadeysay tuubada 24″ × 20.6mm UOE oo leh D/t = 29.6. Adigoo adeegsanaya habka UOE, waxaan gaarnay ovality oo ah 0.08-0.12% (oo aad uga hooseeya xadka 0.2% ee DNV). Waxaan sameynay falanqaynta walxaha xaddidan (FEA) iyo tijaabinta cadaadiska burburka oo heer buuxa ah oo ku saabsan laba muunad. Cadaadiska burburka ayaa la gaaray: 27.8 MPa iyo 28.5 MPa - labadaba shuruudaha kor ku xusan.

2. Adkaanta jabka CTOD ee kor u kaca firfircoon– Qaybta kor u kaca waxay la kulantaa culays daal ah oo ka dhasha dhaqdhaqaaqa xididdada dhiigga iyo hirarka. DNV waxay u baahan tahay baaritaanka CTOD ee -20°C. Womic waxay ku samaysay CTOD birta alxanka iyo HAZ tuubooyinka 25.4mm WT. Natiijooyinka: birta alxanka δ = 0.42-0.55mm, HAZ δ = 0.48-0.65mm. Waxaan sidoo kale bixinnay qaloocyada daalka SN ee alxanka wareegsan si ay uga caawiso qiimeynta nolosha daalka ee macmiilka.

3. Adeeg dhanaan leh oo leh raad H₂S– In kasta oo fiirsashada H₂S ay yar tahay (5-10 ppm), mashruucu wuxuu u baahday shahaado adeeg dhanaan oo dhammaystiran sababtoo ah cadaadis sare (18 MPa) iyo khatarta daxalka maxalliga ah. Womic waxay isticmaashay saxanno sulfur hooseeya (S ≤ 0.0010%), CEV ≤ 0.38%, Mo lagu daray 0.20%, iyo PWHT heerkul ah 580°C muddo 1.5 saacadood ah. Adkaanta ka dib PWHT: birta salka ah 78-82 HRB, alxanka 80-85 HRB. Tijaabooyinka HIC iyo SSC waxay ku dhammaadeen eber dildilaac.

4. Dahaarka miisaanka ee shubka iyo iswaafajinta 3LPE– Qaybta xeebta u dhow waxay u baahnayd dahaadh miisaan shub ah (60mm, oo lagu xoojiyay bir shabag) si loo helo xasillooni hoose. Dahaadh shub ah ayaa lagu mariyey 3LPE oo leh wakiil isku xidha. Womic waxay la shaqaysay dahaadh khaas ah oo ku yaal Angola. Waxaan bixinnay kuuboonno tijaabo ah oo loogu talagalay isku dhejinta iyo tijaabada saamaynta. Dahaadh shub ah ayaa ka gudubtay tijaabada dhibicda (1m oo hoos u dhac ah, dillaac la'aan).

5. Waafaqsanaanta rakibidda giraangiraha– Dhuumaha waxaa lagu rakibay habka loo yaqaan 'reel-lay' (oo lagu dul shubay weel giraangireed). Tani waxay u baahan tahay xakamaynta ovality-ga xad dhaafka ah (≤ 0.2%) iyo dhererka xoojinta alxanka ≤ 0.5mm. Ovality-ga la xakameeyey ee dumarka ilaa 0.08-0.15% iyo daboolka alxanka dhulka ilaa ≤ 0.3mm dherer. Waxaan sameynay 10 wareeg oo jilitaan ah oo cabbir buuxa ah oo ku saabsan tuubo tijaabo ah - ma jirin dildilaac ama burbur ovality ah.

6. Sahanka DNV iyo dukumentiyada– Sahamiyeyaasha DNV waxay goob joog ka ahaayeen baaritaanka hydrostatic, CTOD, HIC, SSC, iyo kormeerka cabbiraadda dufcad kasta. Womic waxay bixisay fayl tayo leh oo 1,500 bog ah (oo ay ku jiraan dhammaan warbixinnada tijaabada, jaantusyada PWHT, diiwaannada UT, iyo saxiixyada sahanka) 4 toddobaad gudahood markii la keenay. Warqadda waa la aqbalay iyada oo aan wax su'aalo ah la weydiin.

7. Natiijo:Dhuumaha waxaa si guul leh loogu rakibay rubuci labaad ee 2025 iyadoo la adeegsanayo markabka duuban ee Deep Constructor. Ma jirin cillado ku yimid qaab tuubbo ama tolmo alxan ah intii lagu jiray isku-darka, dejinta, ama tijaabinta ka dib. Maareeyaha mashruuca macmiilka ayaa yiri: "Xakamaynta ovality-ga Womic iyo natiijooyinka CTOD waxay dhaafeen filashadeenna. Tuubooyinka si joogto ah ayaa loogu dhejiyay goobta iyadoo heerka aqbalaadda hore loo marayo uu yahay 98%. Womic Steel hadda waxay ku jirtaa liiska alaab-qeybiyeyaasha la ansixiyay ee loogu talagalay laba mashruuc oo dheeraad ah oo dhoofinta gaaska biyaha qotoda dheer ee Galbeedka Afrika.

La xiriir:
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Iimayl: sales@womicsteel.com

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Womic Steel - Lamaane aad ku kalsoonaan karto oo loogu talagalay tuubooyinka birta ah ee DNV-OS-F101 L450 SAWL ee dhoofinta gaaska biyaha qoto dheer, marinnada socodka biyaha hoostooda, iyo nidaamyada kor u qaadista xeebaha adduunka oo dhan.

Kii hore: Tuubooyinka Birta ee ASTM A500 Heerka C LSAW: Awoodaha Wax Soo Saarka & Tilmaamaha Badeecada

Xiga: EN 10219 S355JRH LSAW Tuubooyinka Birta: Awoodaha Wax Soo Saarka & Tilmaamaha Badeecada