API 5L X70 LSAW Cov Yeeb Nkab Hlau: Kev Muaj Peev Xwm Tsim Khoom & Cov Khoom Qhia Tshwj Xeeb Duab Tshwj Xeeb

API 5L X70 LSAW Cov Yeeb Nkab Hlau: Kev Muaj Peev Xwm Tsim Khoom & Cov Lus Qhia Txog Khoom

Kev Piav Qhia Luv:

Womic Steel muab cov yeeb nkab hlau API 5L X70 (L485) LSAW zoo rau kev xa roj mus ntev ntev, cov kab loj, thiab cov haujlwm offshore uas xav tau. X70 muaj lub zog tsawg kawg nkaus ntawm 485 MPa (70,300 psi), ua rau phab ntsa tuab txo tau 25-30% piv rau X60 thiab 35-40% piv rau X52. Cov txheej txheem LSAW suav nrog JCOE, UOE, thiab dov phaj vuam txoj kev, txhua yam xa cov kab ncaj nrog kev sib txuas zoo dua. Rau cov kab loj heev lossis cov phab ntsa tuab (txog li 50.8 hli rau JCOE / UOE, txog li 70 hli rau dov phaj), Womic siv cov phaj TMCP siab heev thiab ntau-pass submerged arc vuam nrog kev tswj hwm cua sov nruj. Sab nraud txoj kab uas hla los ntawm 406mm txog 1,600mm (16″ - 63″), phab ntsa tuab los ntawm 6.0mm txog 70mm, ntev txog li 24m. Daim ntawv pov thawj zeb, kev sim hydro, 100% ultrasonic nrog TOFD, beveled ends, thiab txheej tiv thaiv xeb (3LPE, 3LPP, FBE) muaj. Haum rau cov kab roj siab heev (txog li 20 MPa), cov kav dej hla tebchaws ntev (ntau tshaj 1,000 km), kev pabcuam qaub (PSL2 nrog HIC/SSC), thiab cov ntawv thov arctic nrog kev sim cuam tshuam qis-kub txog -60 ° C.

LSAW Hlau Yeeb Nkab Loj:Sab Nraud Txoj Kab uas hla: 406mm – 1,600mm (16″ – 63″), Phab Ntsa Thickness: 6.0mm – 70.0mm (JCOE/UOE siab tshaj 50.8mm, phaj dov siab tshaj 70mm), Ntev: 6m – 18m tus qauv, kev cai ntev txog li 24m

Tus Qauv & Qib ntawm LSAW Steel Pipe:API 5L X70 PSL2 (PSL1 tsis tshua siv rau X70); kuj tau xaiv L485 raws li ISO 3183; DNV-OS-F101 L485 rau cov dej hiav txwv

Kev siv LSAW Steel Pipe:Cov kav dej roj av ntev thiab siab heev (15-20 MPa), cov kav dej loj hla teb chaws, cov kav dej xa tawm roj av hauv dej tob, kev xa roj av qab zib (H₂S ib puag ncig), cov kav dej CO₂ siab rau kev ntes thiab khaws cov pa roj carbon (CCS), cov kav dej roj arctic, cov haujlwm nthuav dav kav dej uas xav tau kev tsim qauv raws li kev ntxhov siab.

Womic Steel muab cov yeeb nkab zoo thiab sib tw ntawm API 5L X70 LSAW steel yeeb nkab, ncaj seam submerged arc welded yeeb nkab, UOE kab yeeb nkab, phab ntsa hnyav carbon yeeb nkab, JCOE roj trunk kab yeeb nkab, sour service yeeb nkab. Daim ntawv pov thawj zeb EN 10204 3.1/3.2, hydro test, UT/TOFD, beveled kawg, 3PE/3LPP/FBE txheej muaj. Hoobkas ncaj qha muab rau EPC pipeline thiab offshore projects thoob ntiaj teb.

Xa email rau peb Cov Lus Qhia Txog Khoom

Cov Khoom Qhia Txog Khoom

Cov Cim Npe Khoom

1. Womic Steel: Kev Muaj Peev Xwm Tsim Khoom & Lub Zog ntawm Lub Tuam Txhab

Womic Steel Group ua haujlwm ntau txoj kab tsim khoom LSAW nrog cov peev xwm siab heev rau kev tsim khoom X70 muaj zog heev. X70 xav tau cov phaj thermomechanically tswj tau ua tiav (TMCP), txias sai, thiab tswj cov cua sov vuam nruj heev.

●Kab JCOE:Rau cov txoj kab uas hla 406mm - 1,422mm (16″–56″), phab ntsa tuab txog li 50.8mm. Cov kauj ruam-rau-kauj ruam JCO tsim nrog kev nthuav dav tshuab. Cov cua sov nkag thaum lub sijhawm SAW vuam txwv tsis pub dhau ≤ 2.5 kJ / hli.

● Kab UOE:Rau cov txoj kab uas hla 508mm - 1,220mm (20″–48″), phab ntsa tuab txog li 40mm. U-forming ces O-forming nrog hydraulic expansion. Superior roundness (± 0.15% OD). Nyiam rau X70 vim muaj cov khoom siv kho tshuab sib xws.

● Phaj Dov (Ib Leeg Sib Dhos):Rau cov txoj kab uas hla 600mm - 1,600mm (24″–63″), phab ntsa tuab ntawm 25mm txog 70mm. Ib lub phaj dov rau hauv lub tog raj kheej. Siv rau phab ntsa hnyav X70 daim ntawv thov.

● Phaj dov (Ob chav sib txuas):Rau cov phab ntsa tuab > 50.8 hli txog 80 hli. Siv rau cov kav dej CO₂ siab heev.

Tag nrho cov peev xwm LSAW tshaj 300,000 tons txhua xyoo, nrog rau kev tsim khoom X70 tshwj xeeb tshaj 50,000 tons hauv ib xyoos. Womic Steel tuav API 5L Monogram (X70 PSL2 tau ntawv pov thawj), ISO 9001, CE PED, DNV GL kev pom zoo, thiab raug tshuaj xyuas tsis tu ncua los ntawm cov tuam txhab roj loj. Cov ntaub ntawv thoob ntiaj teb nrog ntau tshaj 800 km ntawm X70 pipelines muab.

Kev Yooj Yim Tsim Khoom rau X70:

● JCOE: 406–1,422mm OD × 6.0–50.8mm WT × ≤ 18m

● UOE: 508–1,220mm OD × 6.0–40.0mm WT × ≤ 24m (puag ncig ±0.15%)

● Phaj dov (ib txoj kab sib txuas): 600–1,600mm OD × 25–70mm WT × ≤ 12m

● Phaj dov (ob chav sib txuas): 1,000–2,000mm OD × 25–80mm WT × ≤ 12m

Tag nrho cov kav dej X70 tau muab nrog 100% automated UT nrog TOFD, Charpy impact testing ntawm qhov kub thiab txias tshwj xeeb, thiab DWTT rau kev tswj kev tawg. PWHT siv thaum xav tau rau kev pabcuam qaub.

2. API 5L X70: Cov Khoom Siv Sib xyaw & Cov yam ntxwv ua tau zoo

API 5L X70 (L485) yog cov yeeb nkab kab muaj zog siab uas tsim los rau kev xa roj mus rau qhov deb ntev. Qhov tsawg kawg nkaus ntawm lub zog tawm ntawm 485 MPa (70,300 psi) thiab lub zog tensile ntawm 570 MPa (82,700 psi). X70 yog tsim los ntawm kev siv TMCP siab heev nrog kev txias kom nrawm los tsim cov acicular ferrite lossis bainitic microstructure. PSL2 yog qhov yuav tsum tau ua rau X70; PSL1 yuav luag tsis tau siv.

Cov Tshuaj Lom Zem (Kev Tshuaj Xyuas Ladle, qhov siab tshaj plaws % los ntawm pawg - PSL2):

Khoom	API 5L X70 PSL2 (siab tshaj plaws%)	Kev Pabcuam Qab Zib (lub hom phiaj ib txwm muaj)
C	0.12	≤ 0.08
Mn	1.70	≤ 1.50
P	0.025	≤ 0.015
S	0.015	≤ 0.002
Si	0.45	0.15-0.35
V	0.10	≤ 0.06
Nb	0.08	0.04-0.07
Ti	0.04	≤ 0.025
Mo	Tsis tau teev tseg	≤ 0.35 (rau qaub)
Ni	Tsis tau teev tseg	≤ 0.50 (rau qhov kub tsawg)
Cu	Tsis tau teev tseg	≤ 0.30
Cr	Tsis tau teev tseg	≤ 0.30
CEV	≤ 0.43 (feem ntau ≤ 0.41)	≤ 0.40 (feem ntau ≤ 0.38)
Pcm	≤ 0.25	≤ 0.22

Rau kev pabcuam qaub, Womic siv cov pa roj carbon tsawg (C ≤ 0.06%), cov sulfur tsawg heev (S ≤ 0.0015%), cov phaj kho calcium nrog CEV ≤ 0.38%.

Cov Khoom Siv Kho Tshuab (Chav Kub - PSL2):

Vaj tse	API 5L X70 PSL2
Lub Zog Tawm (min)	485 MPa (70,300 psi)
Lub Zog Tawm (max)	605 MPa (87,800 psi)
Lub zog Tensile (min)	570 MPa (82,700 psi)
Lub zog Tensile (max)	760 MPa (110,200 psi)
Qhov Piv Txwv ntawm Cov Nyiaj Tau Los (siab tshaj plaws)	0.93
Kev ntev (min)	18% (rau 50 hli gauge)
Qhov nyuaj (siab tshaj plaws)	90 HRB (qaub: 85 HRB ib txwm muaj)
Kev Cuam Tshuam Toughness (min)	27 J @ 0°C (ib txwm muaj: 100-200J)

Kev sib piv nrog X65 thiab X80:

Qib	Cov qoob loo MPa	Tensile MPa	Qhov Piv Txwv ntawm Cov Khoom	Daim Ntawv Thov Ib Txwm Muaj
X65	450	535	≤ 0.93	Siab heev, dej tob
X70	485	570	≤ 0.93	Siab heev, deb ntev
X80	555	625	≤ 0.93	Kev ncua deb heev, muaj kev nyuaj siab heev

3. Kev Ua Raws Li Qhov Ntev thiab Cov Qauv

Khoom	Cov Lus Qhia Tshwj Xeeb
Tus Qauv	API 5L PSL2 (X70 tsuas yog muab los ua PSL2 rau ib API 5L)
Cov Txheej Txheem Tsim Khoom	JCOE, UOE, phaj dov (ib leeg/ob leeg sib txuas)
Sab Nraud Txoj Kab uas hla	406mm – 1,600mm (16″ – 63″)
Phab ntsa tuab ntau yam	JCOE/UOE: 6.0mm – 50.8mm; Phaj dov: 25mm – 70mm (txog li 80mm kev cai)
Qhov Ntev Ntau	Txheem: 12m, 18m; Ncua: txog li 24m (UOE)
Xaus tiav	Qhov Kawg Beveled (BE) ib API 5L (30 ° bevel, 1.6 hli lub hauv paus ntsej muag)
Qhov Chaw Tiav	Liab qab, 3LPE, 3LPP, FBE (txheej txheej yuav tsum muaj rau feem ntau ntawm X70 cov kav dej)
Kev kam rau siab	OD: ±0.5% lossis ±3.2 hli; WT: -0% / +15%; Ntev: +50 hli / -0 hli
Qhov Ovality (UOE)	≤ 0.2% rau ntug dej hiav txwv, ≤ 0.3% rau ntug dej hiav txwv

4. Qhov Loj & Cov Lus Qhia Tshwj Xeeb - API 5L X70 LSAW Cov Yeeb Nkab Hlau (Xaiv Cov Loj Ib Txwm)

OD (hli)	Kev Xaiv WT (hli)	Txheej Txheem	Kwv yees li qhov hnyav (kg / m2)	Tus Qauv Ntev	Daim Ntawv Thov Ib Txwm Muaj
406	8.0, 10.0, 12.5, 14.0, 16.0	JCOE/UOE	78.5 – 153.9	12m / 18m	Roj sab nraud
508	10.0, 12.5, 14.0, 16.0, 19.0, 22.0	UOE	122.8 – 263.8	12m / 18m / 24m	Txoj kab ntawm lub cev
610	12.5, 14.0, 16.0, 19.0, 22.0, 25.4	UOE	184.2 – 366.2	12m / 18m / 24m	Lub cev tseem ceeb
711	14.0, 16.0, 19.0, 22.0, 25.4, 28.0	UOE	240.7 – 471.7	12m / 18m	Kev hla teb chaws
813	16.0, 19.0, 22.0, 25.4, 30.0, 32.0	JCOE/UOE	314.4 – 616.2	12m / 18m	Cov roj ntau
914	19.0, 22.0, 25.4, 30.0, 35.0, 38.0	JCOE/UOE	419.5 – 820.9	12m / 18m	Kev xa tawm mus rau txawv teb chaws
1,016	22.0, 25.4, 30.0, 35.0, 40.0, 45.0	JCOE/Kuav	539.2 – 1,078.2	12m	Dej tob
1,220	25.4, 30.0, 35.0, 40.0, 45.0, 50.0	Dov (ib leeg)	748.4 – 1,450.5	12m	Kev deb ntev
1,422	30.0, 35.0, 40.0, 45.0, 50.0, 55.0	Dov (ib leeg)	1,030 – 1,856	12m	Siab heev

Cov kav dej X70 yuav luag ib txwm yog PSL2 nrog Charpy kev sim cuam tshuam. Phab ntsa hnyav X70 (≥ 30mm) xav tau PWHT rau kev pabcuam qaub. Txhua cov kav dej X70 xav tau 100% UT nrog TOFD thiab DWTT rau kev tswj kev tawg.

5. Cov Qauv & Qib Sib Xws - LSAW Cov Yeeb Nkab Muaj Zog Siab

Tus Qauv	Cov Qib Hlau	Daim Ntawv Thov Ib Txwm Muaj	Cov Txheej Txheem Tsim
API 5L PSL2	X70 (L485), X80 (L555)	Roj av ntev	UOE/JCOE
ISO 3183	L485, L555	Cov haujlwm thoob ntiaj teb	UOE
DNV-OS-F101	L485, L555	Cov kav dej hauv qab dej hiav txwv	UOE
CSA Z245.1	Qib 483 (X70)	Cov kav dej hauv Canada	UOE
GOST R 52079	K60 (X70 sib npaug)	Cov kav dej hauv Lavxias	JCOE
NORSOK M-120	X70	Cov kav dej hauv av	UOE

Kev siv luv luv:Cov kav roj ntev uas muaj siab heev, cov kav dej hla teb chaws uas ntev tshaj 1,000 km, kev xa roj mus rau hauv dej tob, kev pabcuam roj qaub, cov kav dej arctic, cov kav dej CO₂.

6. Cov Txheej Txheem Tsim Khoom - LSAW (UOE / JCOE / Dov Phaj) rau X70 Cov Yeeb Nkab Hlau

X70 xav tau cov phaj TMCP uas txias sai, cua sov nkag qis heev thaum vuam SAW (≤ 2.2 kJ/mm), thiab kev tswj kub ntawm qhov chaw hla (≤ 150°C). UOE raug nyiam dua JCOE rau X70 vim muaj kev tswj qhov ntev zoo dua.

Cov Txheej Txheem UOE (508–1,220mm OD, 6.0–40mm WT) - Pom zoo rau X70:

● Kev txiav ntug phaj (J-bevel, ±0.3 hli kev raug)

● U-nias (4000t zog)

● O-nias (6000t zog)

● Kev nthuav dav ntawm lub tshuab (72 ntu, nce OD 1.0-1.2%)

● SAW sab hauv: cua sov nkag ≤ 2.2 kJ / hli, interpass ≤ 150 ° C

● Kev txiav rov qab (mechanical, tsis yog thermal)

● SAW Sab Nraud: ntau zaus dhau, cua sov nkag ≤ 2.2 kJ/mm2, saib xyuas qhov txias

● Kev kuaj xyuas qhov ntev kawg: ovality ≤ 0.15-0.20%

Txheej Txheem JCOE (406–1,422mm OD, 6.0–50.8mm WT):

● Kev tsim ua kauj ruam nrog qhov hnyav qis dua

● Haum rau onshore X70 qhov twg ovality ≤ 0.3% yog qhov txais tau

● Tib yam kev tswj vuam zoo li UOE

Phaj Dov (Ib Leeg Sib Dhos) rau Phab Ntsa Hnyav X70 (600–1,600mm OD, 25–70mm WT):

● 4-yob khoov nrog kev ntsuas qhov puag ncig hauv cov txheej txheem

● SAW ntau zaus (yam tsawg kawg 4 zaug rau 40 hli WT)

● PWHT yuav tsum tau ua rau phab ntsa tuab ≥ 25 hli rau kev pabcuam qaub

● Siv rau CO₂ siab thiab kev txhaj dej

Kev Kho Mob Kub Tom Qab Weld (PWHT):Rau X70 kev pabcuam qaub, PWHT siv rau txhua phab ntsa tuab ≥ 20mm (tus neeg siv khoom feem ntau qhia rau txhua qhov tuab). Qhov kub thiab txias 570-590 ° C (qis dua rau X65 kom tsis txhob kub dhau). Tuav lub sijhawm 1 teev rau txhua 25mm. Tus nqi txias ≤ 100 ° C ib teev. Qhov nyuaj tom qab PWHT: ≤ 85 HRB.

Kev Ntsuas Kev Tswj Pob Txha Rau X70:

● Charpy V-Notch ntawm -20°C, -46°C, lossis -60°C (feem ntau: 100-200J)

● DWTT (Kev Ntsuas Qhov Hnyav Tear) ntawm -20 ° C lossis qhov kub sim: thaj chaw txiav ≥ 85% rau lub cev yeeb nkab, ≥ 70% rau kev vuam

● CTOD (Qhov Qhib Qhov Tawg) rau cov khoom nce hauv hiav txwv (≥ 0.25mm ntawm -20 ° C)

7. Kev Tswj Xyuas Zoo & Cov Txheej Txheem Ntsuas rau API 5L X70 LSAW Steel Pipe

Theem	Txoj Kev Tshuaj Xyuas	Lub Hom Phiaj
Phaj	Kev Tshuaj Xyuas Tshuaj (OES)	Txheeb xyuas qhov txwv X70 (C qis, CEV ≤ 0.43)
Phaj	Ultrasonic (100% lamination xyuas)	Tshawb nrhiav cov laminations
Phaj	Tensile (L+T) + CVN ntawm -20°C	Cov khoom siv kho tshuab, kev tawv
Phaj	Qhov loj ntawm cov noob (ASTM E112)	Cov nplej zoo (ASTM 11 lossis zoo dua)
Thaum lub sijhawm tsim	Kev soj ntsuam tas mus li	OD, ovality, ntug sib dhos
Weld seam	100% Tsis Siv Neeg UT nrog TOFD	Tshawb nrhiav txhua qhov tsis zoo ntawm weld
Weld seam	RT (10-100% raws li tau teev tseg)	Kev txheeb xyuas qhov zoo ntawm vuam
Weld seam	MPI (ntiv taw/HAZ)	Cov kab nrib pleb ntawm qhov chaw
Weld seam	Kev nyuaj hla (BM, HAZ, WM)	Kev pabcuam qaub (≤ 85 HRB)
Cov yeeb nkab tiav lawm	Kev Ntsuas Hydrostatic (90-100% SMYS)	Kev ua siab ncaj ncees
Cov yeeb nkab tiav lawm	Charpy V-Notch ntawm qhov kub teev tseg (yam tsawg kawg nkaus 27J)	Kev kub tsawg
Cov yeeb nkab tiav lawm	DWTT ntawm qhov ntsuas kub (≥85% SA)	Kev tawg ntawm cov pob txha tawg
Cov yeeb nkab tiav lawm	Kev Khoov / Flattening	Kev yoog tau
Cov yeeb nkab tiav lawm	CTOD (rau offshore)	Kev tawg tawv
Cov yeeb nkab tiav lawm	Pom thiab cim nrog tus lej kub	Kev taug qab tau

Yuav tsum muaj rau X70 PSL2:

● 100% UT ntawm cov xov hlau sib txuas (tsis tuaj yeem pom)

● Kev sim hydrostatic

● Kev cuam tshuam Charpy (yam tsawg kawg 3 teeb)

● Rau kev pabcuam qaub: HIC, SSC, PWHT, hardness ≤ 85 HRB

Rau cov teb chaws nyob deb nroog: kev kuaj CTOD, ovality ≤ 0.2%

8. Cov Ntawv Thov Tseem Ceeb - API 5L X70 LSAW Cov Yeeb Nkab Hlau

●Cov kav roj ntev ntev uas muaj zog heev- Kev ua haujlwm siab txog li 20 MPa (2,900 psi), cov kav dej ntev tshaj 1,000 km

● Cov kav dej loj hla teb chaws– OD 1,016-1,422mm, thauj cov roj av ntau heev

● Cov kav dej xa roj tawm hauv dej tob- Qhov tob ntawm dej txog li 3,000m, xav tau kev tiv thaiv kev tawg thiab qhov sib npaug ntawm cov oval

●Kev xa roj rau kev pabcuam qaub ncaug– Cov teb uas muaj H₂S (PSL2 nrog HIC/SSC, PWHT, CEV qis)

● Cov kav dej CO₂ siab rau CCS- Cov haujlwm ntes thiab khaws cov pa roj carbon uas xav tau lub zog siab thiab qhov kub qis

● Cov kav dej roj Arctic- Cov cheeb tsam Permafrost xav tau Charpy impact ntawm -60 ° C thiab DWTT tswj

● Cov phiaj xwm nthuav dav kav dej- Tsim los ntawm kev siv zog rau thaj chaw seismic lossis thaj chaw te

● Cov kav dej hauv roob- Muaj peev xwm ua haujlwm ntev (X70 nrog rau qhov piv txwv tshwj xeeb)

9. Ntim & Xa Khoom - API 5L X70 LSAW Cov Yeeb Nkab Hlau

Vim tias cov kav dej X70 muaj nqis ntau (feem ntau yog 2-3 npaug ntawm X52), Womic siv cov ntim khoom zoo dua:

● Cov kav dej ib leeg (tsis txhob muab sib txuas ua ke, kom tsis txhob muaj kev puas tsuaj rau txheej txheej)

● Lub thawv ntoo hnyav nrog cov roj hmab ntawm txhua qhov kev txhawb nqa (yam tsawg kawg 4 qhov kev txhawb nqa rau txhua 12m yeeb nkab)

● Cov hau hlau kawg nrog cov roj hmab gaskets thiab VCI hnab sab hauv

● Rau cov kav dej uas muaj txheej: ua npuas ncauj qhwv + daim ntawv yas + lub thawv ntoo ntxiv rau kev thauj khoom hauv hiav txwv

● Tag nrho cov kav dej tau muab cim nrog RFID cov cim npe rau kev taug qab tag nrho

● Kev xa khoom los ntawm cov nkoj loj uas muaj cov phiaj xwm cia khoom rau cov kav dej tshwj xeeb

● Cov ntaub ntawv pov thawj suav nrog EN 10204 Hom 3.2 daim ntawv pov thawj rau txhua qhov cua sov

10. Cov txiaj ntsig ntawm Womic Steel & FAQ - API 5L X70 LSAW Steel Pipe

Vim li cas Womic Steel rau X70 LSAW?

● Cov txheej txheem UOE xa ±0.15% OD puag ncig - qhov tseem ceeb rau X70 qhov kev tiv thaiv kev tawg siab

● Cov phaj TMCP siab heev nrog CEV ≤ 0.40% (feem ntau 0.35-0.38%) rau kev vuam zoo heev

● Qhov kub qis qis txog li -60°C (CTOD muaj)

● Daim ntawv pov thawj kev pabcuam qaub (HIC, SSC) nrog rau lub cub tawg PWHT uas muaj peev xwm ntev txog 12m

● API 5L Monogram + DNV kev pom zoo rau offshore

● Muaj cov kav dej X70 ntev tshaj 800 km uas tsis muaj teeb meem thaum siv.

● Kev taug qab tag nrho nrog RFID taug qab

Cov Lus Nug Feem Ntau:

Q: Vim li cas ho xaiv X70 dua li X65 rau cov kav dej roj ntev?
A: X70 muaj zog dua 8% (485 vs 450 MPa), uas ua rau phab ntsa tuab txo li ntawm 10-12% rau tib lub siab. Rau cov kav dej 1,000 km, qhov no tuaj yeem txuag tau 50,000-80,000 tons ntawm cov hlau, txo cov nqi khoom siv thiab cov pa roj carbon. Txawm li cas los xij, X70 xav tau cov phaj TMCP kim dua, kev tswj hwm vuam nruj dua, thiab cov nqi tshuaj xyuas siab dua. Lub ntsiab lus breakeven feem ntau yog nyob ib puag ncig 500-800 km. Rau cov kav dej luv dua, X65 pheej yig dua.

Q: X70 puas nyuaj dua rau vuam hauv daim teb dua li X65?
A: Yog. X70 muaj cov pa roj carbon sib npaug ntau dua (CEV 0.38-0.43% vs X65 0.35-0.40%) thiab rhiab heev rau hydrogen tawg. Kev vuam hauv thaj chaw yuav tsum tau ua ntej cua sov (feem ntau yog 100-150 ° C rau X70 vs 75-100 ° C rau X65) thiab kev tswj hwm nruj ntawm cov cua sov nkag thiab qhov kub thiab txias interpass. Txawm li cas los xij, nrog cov txheej txheem vuam tsim nyog (WPS) thiab cov kws tshaj lij welders, X70 tuaj yeem vuam tau zoo. Womic muab cov lus qhia txog kev vuam khoom siv thiab tuaj yeem muab cov daim coupon tsim nyog.

Q: X70 puas siv tau rau kev pabcuam qaub (H₂S)?
A: Yog, tab sis xav tau kev ntsuas ntxiv: CEV ≤ 0.38% (zoo dua ≤ 0.36%), PWHT rau txhua qhov tuab ntawm phab ntsa, qhov nyuaj ≤ 85 HRB, HIC thiab SSC kev sim. Womic tau muab kev pabcuam qaub X70 rau cov haujlwm nrog txog li 50 ppm H₂S. Nco ntsoov tias X70 muaj kev nkag siab ntau dua rau H₂S dua li X65 lossis X60, yog li ntau tus neeg teb xov tooj tseem nyiam X65 rau cov chaw muaj H₂S siab.

Q: Qhov siab tshaj plaws ntawm phab ntsa tuab rau X70 LSAW yeeb nkab yog dab tsi?
A: JCOE/UOE siab tshaj 50.8 hli, dov phaj ib leeg txog li 70 hli. Rau cov phab ntsa tuab > 40 hli, UOE cov cuab yeej siv tsawg, thiab dov phaj yog qhov zoo dua. Tsis ntev los no peb tau muab X70 914 hli OD × 60 hli WT rau cov kav dej CO₂ siab (CCS project).

Q: Yuav tsum muaj kev ntsuam xyuas qhov tawg ntawm X70 li cas?
A: API 5L xav tau kev sim Charpy V-Notch (27J min) tab sis feem ntau cov haujlwm teev cov nqi siab dua (piv txwv li, 100J ntawm -20 ° C). DWTT yog qhov yuav tsum tau rau kev tswj kev tawg (cheeb tsam shear ≥ 85% ntawm qhov kub sim). Rau cov kav dej hiav txwv lossis arctic, kev sim CTOD (≥ 0.25mm ntawm -20 ° C lossis -46 ° C) feem ntau ntxiv. Womic ua tag nrho cov kev sim no hauv tsev lossis los ntawm cov chaw kuaj thib peb uas tau lees paub.

Q: Lub sijhawm ua cov yeeb nkab X70 LSAW feem ntau yog dab tsi?
A: X70 xav tau cov phaj TMCP uas muaj lub sijhawm ua khoom ntev dua (8-12 lub lis piam los ntawm lub Hoobkas). Tag nrho lub sijhawm ua khoom: 70-100 hnub txij li hnub xaj mus txog FOB xa khoom. Kev xaj ceev (45-60 hnub) ua tau yog tias cov phaj muaj nyob hauv Tshuag.

Q: X70 puas xav tau PWHT rau kev pabcuam tsis yog qaub?
A: API 5L tsis yuam kom PWHT rau X70 hauv qab 50.8 hli WT. Txawm li cas los xij, ntau tus neeg teb xov tooj siv PWHT rau X70 pipelines tsis hais txog phab ntsa tuab npaum li cas los txo qhov kev ntxhov siab seem thiab xyuas kom meej tias HAZ muaj zog. Womic tuaj yeem muab PWHT thaum thov (ntxiv tus nqi thiab lub sijhawm ua haujlwm).

Cov Lus Qhia Txog Qhov Project - Txoj Kab Tsheb Roj Av Ntev-Nruab Nrab Asia

Lub Tebchaws:ciam teb Uzbekistan - Tajikistan - Tuam Tshoj (ib feem ntawm Central Asia-Tuam Tshoj Gas Pipeline)
Tus Qauv & Qib:API 5L X70 PSL2 (tsis yog qaub, tab sis nrog rau qhov yuav tsum tau kub tsawg)
Qhov Loj & Qhov Ntau:

● OD 1,219mm (48″) × WT 19.0mm – 85,000 meters (kwv yees li 48,500 tons) tsim los ntawm UOE txheej txheem

● OD 1,219mm (48″) × WT 22.2mm – 15,000 meters (kwv yees li 9,500 tons) tsim los ntawm UOE txheej txheem (phab ntsa tuab dua rau kev hla roob thiab thaj chaw muaj qhov txhaum)

● OD 1,016mm (40″) × WT 17.5mm – 40,000 meters (kwv yees li 17,800 tons) tsim los ntawm JCOE txheej txheem (kab ceg)
Tag Nrho:140,000 meters (140 km), kwv yees li 75,800 tons

Cov Lus Qhia:Txheej 3LPE sab nraud (tag nrho 3.0 hli), qhov kawg beveled 30°/1.6 hli, hydrotest ntawm 19.5 MPa (tsim siab 15.0 MPa). Yuav tsum muaj Charpy impact ntawm -20°C (yam tsawg kawg nkaus 80J, ua tiav 150-220J) thiab ntawm -46°C (yam tsawg kawg nkaus 50J, ua tiav 100-160J). DWTT ntawm -20°C: shear cheeb tsam ≥ 85% rau lub cev yeeb nkab, ≥ 70% rau weld. Tag nrho lub cev UT (100% ntawm cov yeeb nkab ntim, tsis yog seam xwb). Kev tshuaj xyuas sab nraud los ntawm TÜV Rheinland thoob plaws hauv kev tsim khoom. DNV tau pom kev sim hydrostatic ntawm 10% ntawm kev tsim khoom.

Daim Ntawv Thov:Kev nthuav dav ntawm Central Asia-Suav Teb Gas Pipeline (Kab D), thauj cov roj av los ntawm cov chaw roj hauv Uzbekistan hla Tajikistan mus rau ciam teb Suav teb. Tag nrho qhov ntev ntawm txoj kab txuas ntxiv no: 140 km. Cov kav dej hla cov roob Pamir, suav nrog plaub thaj chaw muaj av qeeg, peb qhov kev hla dej loj, thiab qhov siab hloov pauv ntawm 400m mus rau 2,800m.

Cov Kev Sib Tw thiab Kev Dais Teeb Meem:

● Qhov siab thiab qhov kub hloov pauv ntau heev– Qhov siab ntawm cov kav dej kav dej yog txij li 400m txog 2,800m, nrog rau qhov kub thiab txias ntawm -35°C thaum lub caij ntuj no mus txog +45°C thaum lub caij ntuj sov. Cov kav dej 48" X70 xav tau qhov kub thiab txias qis qis mus txog -46°C (Charpy min 50J). Womic xaiv TMCP phaj nrog nickel ntxiv (Ni ≤ 0.50%) kom ua tiav Charpy cuam tshuam ntawm -46°C nruab nrab 120J. DWTT ntawm -20°C shear cheeb tsam: 92-96% rau lub cev yeeb nkab, 82-88% rau weld. Tag nrho cov kev xeem dhau.

● Kev hla dhau qhov av qeeg - kev tsim qauv raws li kev ntxhov siab– Plaub ntu ntawm cov kav dej hla cov qhov tawg uas muaj peev xwm hloov chaw hauv av txog li 1.5m. Cov kav dej tau tsim los ntawm kev siv kev tsim qauv raws li kev ntxhov siab (tsis yog raws li kev ntxhov siab). Qhov no xav tau cov kav dej X70 nrog qhov sib piv ntawm cov zis ≤ 0.85 (API 5L PSL2 tso cai 0.93) thiab kev ntev sib xws ≥ 15%. Womic tsim cov X70 tshwj xeeb "kev ntxhov siab siab" nrog qhov sib piv ntawm cov zis 0.80-0.84 thiab kev ntev sib xws 16-18%. Peb kuj tau muab kev sim tensile tag nrho (tsis yog strip) los xyuas kom meej tias muaj peev xwm ntxhov siab.

● Av roob uas yuav tsum tau khoov heev– Cov kav dej muaj 22 km ntawm 48" yeeb nkab ntsia rau ntawm cov nqes hav ntawm 20-30 degrees. Kev khoov txias ntawm cov yeeb nkab X70 yog txwv (API 5L tso cai 1.5 ° ib 12m). Womic muab cov yeeb nkab nrog cov pob qij txha ntev 18m rau cov ntu ncaj thiab 12m pob qij txha rau cov ntu khoov. Peb kuj tau ua qhov kev sim khoov ntawm cov qauv puv ntoob: 48" × 19.0mm yeeb nkab tau khoov txias rau 2.0 ° ib 12m yam tsis muaj kev tawg (tau txheeb xyuas los ntawm UT thiab MT tom qab khoov).

● Kev hla dej uas xav tau phab ntsa tuab heev– Peb qhov kev hla dej (Oxus tributaries) xav tau 22.2mm WT es tsis yog 19.0mm rau kev tiv thaiv kev tawg thiab khoov ntxiv thaum lub sijhawm rub rov qab. Womic siv cov txheej txheem UOE rau cov kav dej no kom ua tiav qhov ovality ≤ 0.2% (qhov tseeb 0.12-0.18%), kom ntseeg tau tias txoj kev hla mus los ntawm lub qhov. Cov kav dej phab ntsa tuab dua kuj xav tau qhov kub qis dua thaum vuam (≤ 2.0 kJ / hli) kom tswj tau HAZ toughness.

● Kev xa khoom mus deb thoob plaws peb lub tebchaws– Cov kav dej tau tsim tawm hauv Womic lub Hoobkas Tianjin, xa los ntawm kev tsheb ciav hlau mus rau Almaty (Kazakhstan), tom qab ntawd xa mus rau cov tsheb thauj khoom kom xa mus rau cov chaw tsim kho hauv Uzbekistan thiab Tajikistan. Tag nrho qhov deb ntawm kev thauj mus los: ntau tshaj 5,000 km. Womic siv cov tsheb ciav hlau tshwj xeeb nrog cov kev txhawb nqa padded thiab cov hlau banding. Txhua lub kav dej tau luam theej duab nrog RFID ntawm txhua qhov chaw hloov pauv. Tsis muaj cov kav dej puas tsuaj thaum lub sijhawm thauj mus los txawm tias muaj 3 qhov kev hla ciam teb thiab 6 qhov kev hloov pauv.

● Cov kev cai tshwj xeeb rau kev tiv thaiv UV siab heev– Ntawm qhov siab 2,800m, hluav taws xob UV siab dua 40% dua li ntawm dej hiav txwv. Tus qauv 3LPE tuaj yeem lwj hauv UV siab. Womic thov 3LPE nrog cov txheej sab saud UV-stabilized zoo dua (cov ntsiab lus dub carbon 2.5% piv rau tus qauv 2.0%). Cov txheej txheem dhau qhov kev sim UV weathering ceev (1,000 teev QUV, gloss retention ≥ 80%). Lub zog tev tawm tseem > 200 N / cm tom qab raug UV.

● Qhov Tshwm Sim:Qhov kev txuas ntxiv ntawm cov kav dej 140 km tau ua tiav thiab tau ua haujlwm hauv Q2 2025. Tag nrho 75,800 tons ntawm X70 PSL2 cov kav dej tau dhau los ntawm TÜV kev tshuaj xyuas nrog xoom qhov tsis lees paub. Cov ntu tsim qauv raws li kev ntxhov siab tau dhau los ntawm ob qhov xwm txheej av qeeg (qhov loj 4.2 thiab 5.1) thaum lub sijhawm 18 lub hlis thawj zaug ntawm kev ua haujlwm tsis muaj cim qhia txog kev khoov lossis xau. Tus neeg siv khoom (lub tuam txhab roj hauv tebchaws ntawm Uzbekistan) tau tshaj tawm kev qhuas rau Womic Steel rau "kev tswj hwm zoo tshaj plaws thiab kev txhawb nqa kev siv tshuab." Womic tam sim no yog tus neeg muab khoom nyiam rau cov ntu yav tom ntej ntawm Kab D.

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Womic Steel - Koj tus khub txhim khu kev qha rau API 5L X70 LSAW cov kav dej rau cov kav roj ntev ultra-siab, cov kav dej hla teb chaws, cov ntawv thov arctic, thiab cov cheeb tsam muaj av qeeg siab thoob ntiaj teb.

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