Khoom Description
API 5L X42MS NACE TM0284 ERW Yeeb Nkabyog lub siab - zoo hluav taws xob tsis kam welded (ERW) kab yeeb nkab tsim rauqaub kev pabcuam ib puag ncig(muaj H₂S). Tsim los rau API 5L (PSL1 / PSL2) thiab NACE TM0284 tus qauv, nws muaj cov yam ntxwv zoo heev rau hydrogen-induced cracking (HIC) thiab sulfide stress cracking (SSC).
Cov3LPE (Peb-Txheej Polyethylene)txheej txheej sab nraud muab kev tiv thaiv corrosion zoo tshaj rau cov kav dej faus, kom ntseeg tau ntev -lub sij hawm ua haujlwm ntev hauv cov av hnyav thiab hauv av.
| Specification | Paub meej |
| Txuj | API Spec 5L (45th / 46th Edition) |
| Qib | X42 MAS |
| Khoom Specification Level | PSL2 |
| Hom kev tsim khoom | ERW (Electric Resistance Welded) |
| Kev Xa Khoom | Weld normalized (900-950 degree, cua txias) |
| Sour Service Qualification | NACE MR0175 / ISO 15156 |
| Sab nrauv txheej | 3LPE (Peb-Txheej Polyethylene) |
| Txheej Txheem | ISO 21809-1 / DIN 30670 |
| Qhov Loj | 2 "- 24" NPS (kev cai mus txog 26" OD) |
| Phab ntsa Thickness | 3.91-25.40 hli |
| Ntev | 6m, 12m random; tsau ntev mus txog 18m |
Cov yam ntxwv tseem ceeb:
✅Sour Service Certified:NACE TM0284 ua raws li H₂S- muaj cov xov xwm
✅ Siab zog & ToughnessYam tsawg kawg nkaus lub zog: 290 MPa (42 ksi)
✅ Superior Weldability: Tsawg carbon sib npaug, zoo heev weld seam kev ncaj ncees
✅ 3LPE Anti-Corrosion: DIN 30670 / ISO 21809-1 ua raws, 20+ xyoo kev pab cuam lub neej
✅ Tus nqi -Cov: ERW txheej txheem muab cov nqi sib tw vs. seamless yeeb nkab
Technical Specifications
1.Base Pipe Standard & Qib:
Txuj: API 5L 45th Edition, PSL1 / PSL2
Qib: X42MS (L290MS)
Txheej txheem: ERW (Electric Resistance Welded), tag nrho lub cev normalized
Sour Service: NACE TM0284 (HIC / SSC tsis kam)
2.Chemical Composition (Max, wt%):
| Lub ntsiab | C | Si | Mn | P | S | V | Nb | Ti |
|---|---|---|---|---|---|---|---|---|
| Cov ntsiab lus | 0.22 | 0.45 | 1.30 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 |
| Cov pa roj carbon sib npaug (CE): Tsawg dua lossis sib npaug rau 0.42% (CEₗₗw) rau PSL2 |
3.Mechanical Properties:
| Khoom | Yam tsawg kawg nkaus | Chav tsev |
|---|---|---|
| Yield zog (sᵧ) | 290 (42,000) | MPa (psi) |
| Tensile zog (sᵦ) | 415 (60,200) | MPa (psi) |
| Elongation (δ) | Ntau dua lossis sib npaug li 25 | % |
| Charpy Impact Zog (-20 degree) | Ntau dua lossis sib npaug 27 | J |
| Hardness | Tsawg dua los yog sib npaug li 250 | HV 10 |
| Weld seam zog phim cov yeeb nkab lub cev xav tau |
4.3LPE Txheej Specification (Sab nraud):
| Txheej | Khoom siv | Thickness | Txuj |
|---|---|---|---|
| 1st Txheej (FBE) | Fusion Bonded Epoxy | Ntau tshaj lossis sib npaug li 80 μm | TS EN ISO 21809-1 |
| Txheej 2 (Adhesive) | Copolymer | 170–250 μm | TIAB SA 30670 |
| 3rd Layer (PE) | High -Density Polyethylene | 1.8-3.7 hli * | GB/T 23257 |
| PE thickness: Standard (1.8–2.0 mm), Reinforced (2.2–2.4 mm), Ntxiv Reinforced (2.9–3.7 mm) raws li OD |
Txheej Txheej
Adhesion (FBE-Steel): Ntau dua lossis sib npaug li 8 MPa
Lub zog cuam tshuam: Ntau dua lossis sib npaug ntawm 10 J / mm (tus qauv)
Cathodic Disbondment: Tsawg dua lossis sib npaug li 10 hli (65 degree, 48h)
Bending Resistance: Ntau dua lossis sib npaug li 3℃/ D (tsis muaj tawg)
5.Dimensions & Tolerances:
-Sab nraud txoj kab uas hla (OD): 219.1 mm - 610 mm (8" - 24")
- Phab ntsa Thickness (WT): 6.0 mm - 20.0 mm
-Length: 6 m, 9 m, 12 m (kev cai ntev muaj)
-Txoj kab uas hla: ± 0.75% OD
- Phab ntsa Thickness kam rau ua: ± 12.5% WT
-Ends: Beveled (30 degree), dawb xaus muaj
6.Sour Service Qualification & NACE Testing:
Cov khoom lag luam muaj peev xwm tsim nyog rau ntub H₂S (kev pabcuam qaub) ib puag ncig ib NACE MR0175 / ISO 15156, nrog rau kev xeem HIC thiab SSC.
Qhia Hydrogen Induced Cracking (HIC) - NACE TM0284
HIC kev ntsuam xyuas ntsuas cov khoom tiv thaiv rau sab hauv tawg los ntawm hydrogen diffusion los ntawm H₂S corrosion. Raws li NACE TM0284, cov qauv kuaj tau muab tso rau hauv H₂S-saturated tov rau 96 teev, tom qab ntawd muab faib thiab tshuaj xyuas microscopically rau cov kab nrib pleb.
Kev lees txais (ib NACE MR0175 / ISO 15156, Annex B, Table B.3):
| Parameter | Kev ntsuas |
| CLR (Crack Length Ratio) | Tsawg dua lossis sib npaug li 15% |
| CTR (Crack Thickness Ratio) | Tsawg dua lossis sib npaug li 5% |
| CSR (Crack Sensitivity Ratio) | Tsawg dua lossis sib npaug li 2% |
*NACE MR0175/ISO 15156-2, Annex B, Table B.3 muab cov qauv kev lees paub rau HIC kuaj-. Cov qauv kev lees paub dav dav tau txais: CLR<15%, CTR <5%, CSR <1.5%
nthuav qhia Sulfide Stress Cracking (SSC) - NACE TM0177
Kev ntsuam xyuas SSC ntsuas cov khoom tiv thaiv kom tawg tawg nyob rau hauv tensile kev nyuaj siab hauv H₂S- muaj ib puag ncig.
| Parameter | Paub meej |
| Txoj Kev Xeem | Method A (NACE TM0177) |
| Load condition | 75% ntawm qhov tsawg kawg nkaus yield zog (SMYS) |
| Duration | 720 teev (30 hnub) tsis tu ncua immersion |
| H₂S Ib puag ncig | Saturated H₂S tov (pH{0}}tswj) |
| Txais | Tsis muaj cracking pom thaum ua tiav |
Qhia Vim Li Cas PSL2 Qhov Tseem Ceeb rau Sour Service?
| Kev xav tau | PSL1 | PSL2 |
| Kev ntsuam xyuas cuam tshuam | ❌ Tsis tas yuav | ✅ Yuav tsum tau (@ -20 degree) |
| Weld Normalizing | ❌ Xaiv tau | ✅ Yuav tsum tau |
| NDT Inspection | Spot UT | 100% UT + 100% Eddy Tam sim no |
| Hardness Tswj | Tsis txwv | Tsawg dua lossis sib npaug rau 250 HV10 (weld + HAZ) |
| Carbon sib npaug | Tsis txwv | Tsawg dua lossis sib npaug li 0.43% CEIIW |
| Sour Service | Tsis tsim nyog | ✅ HIC/SSC tsim nyog |
PSL2 yog qhov tsim nyog rau qhov chaw ua haujlwm qaub, nrog rau qhov yuav tsum tau kuaj xyuas, 100% UT kev tshuaj xyuas, tag nrho traceability, thiab hardness tswj.
Quality Assurance & Testing
Txhua qhov khoom xa tuaj suav nrog cov ntaub ntawv tshuaj xyuas tag nrho rau cov qauv thoob ntiaj teb:
EN 10204 Hom 3.1- daim ntawv pov thawj zeb nrog cov txiaj ntsig kev xeem
EN 10204 Hom 3.2- thib peb-kev tshuaj xyuas tog (yeem)
100% Hydrostatic Test- Raws li API 5L qhov yuav tsum tau muaj (kev kaw lus nkhaus)
100% Kev Ntsuas Ultrasonic (UT)- weld seam thiab tag nrho lub cev tshuaj xyuas
100% Eddy Current Testing- nrhiav pom qhov tsis haum
HIC Test Report- NACE TM0284 nrog CLR / CTR / CSR cov txiaj ntsig
SSC Test Report- NACE TM0177 (720 teev) ua raws
Kev Xeem Hardness- BM, weld, HAZ - Tsawg dua lossis sib npaug rau 250 HV10
Kev ntsuam xyuas cuam tshuam(Charpy V-notch) – @ -20℃, 27J min
Thib peb -Kev Xaiv Tus Timkhawv tog- SGS, TUV, BV, Lloyds Register
Daim ntawv thov teb
🛢️ Roj & Roj Kev Lag Luam
Sour crude roj kis pipelines
Cov kab sib sau ua ke roj (H₂S cov ntsiab lus Tsawg dua lossis sib npaug li 5%)
Oilfield dej txhaj tshuaj thiab tsim cov kab dej
Refinery txheej txheem piping (cov kev pabcuam qaub)
🏗️ Infrastructure & Utilities
Nroog natural gas faib tes hauj lwm
faus industrial kua pipelines
Hla - cov kav dej xa mus hauv lub tebchaws
🌍 Hnyav Environment Projects
Suab puam thiab ntug hiav txwv faus cov kav dej
Siab - dej- rooj thiab thaj chaw corrosive av
Cov cheeb tsam txias (txog rau -40 degree) vim qhov kub thiab txias zoo heev
| Thaj tsam | Cov lag luam tseem ceeb | Tej yaam num |
| Middle East | Saudi Arabia, UAE, Iran, Iraq, Kuwait, Oman | National pipeline expansions, roj teb sib sau ua ke tes hauj lwm |
| Teb chaws Africa | Nigeria, Angola, Kenya, Algeria | Cov pa roj carbon monoxide kis tau tus mob, hla lub teb chaws pipelines |
| Southeast Asia | Indonesia, Malaysia, Nyab Laj, Thaib teb | Submarine pipelines, LNG infrastructure |
| South America | Brazil (SAMARCO), Venezuela (PDVSA), Argentina | Slurry thauj, roj sib sau ua ke, kev pabcuam qaub |
| Teb chaws Europe | Romania, Norway, UK | Onshore / offshore kab ntawv thov |
Kev vam meej
📌 Case 1: Saudi Arabia Sour Gas Pipeline Project
Specification: Φ323.9 × 9.5mm, X42MS, 3LPE (qib txhawb zog)
Daim ntawv thov: Cov pa roj carbon monoxide kis tau tus mob (H₂S: 3.2%)
Kev ua tau zoo: 5 xyoo kev pabcuam nrog xoom corrosion lossis to; txheej kev ncaj ncees khaws cia hauv siab -kub suab puam av (60 degree)
📌 Case 2: Indonesia Offshore Gas Gathering Project
Specification: Φ273 × 8.0mm, X42MS, 3LPE (qib ntxiv txhawb ntxiv)
Daim ntawv thov: faus pipeline nyob rau hauv ntug dej hiav txwv marsh (siab salinity & humidity)
Kev Ua Haujlwm: 3 xyoos kev pabcuam tsis muaj teeb meem HIC / SSC; 3LPE txheej tiv thaiv tidal zone mechanical stress
📌 Case 3: Tuam Tshoj-Russia East Gas Pipeline (Sour Section)
Specification: Φ1016 × 14.3mm, X42MS, 3LPE
Daim ntawv thov: Sulfur- muaj cov pa xa hluav taws xob
Kev Ua Haujlwm: Siab HIC tsis kam; tsis muaj corrosion lossis to tom qab 3 xyoos ntawm kev ua haujlwm
FAQ (Cov lus nug nquag nug)
Q1: "X42MS" txhais li cas?
A1: X42=Yam tsawg kawg nkaus yield zog 42 ksi (290 MPa); M=Sour service (HIC/SSC resistant); S=ERW yeeb nkab.
Q2: Vim li cas thiaj xaiv 3LPE hla FBE txheej rau cov kav dej faus?
A2: 3LPE muab kev tiv thaiv zoo tshaj plaws (kev cuam tshuam / kev puas tsuaj) thiab kev tiv thaiv ya raws; FBE ib leeg tuaj yeem ua rau muaj kev puas tsuaj thaum lub sijhawm tsim kho thiab muaj lub neej ua haujlwm luv dua . 3LPE yog tus qauv thoob ntiaj teb rau cov kav dej faus.
Q3: Dab tsi yog qhov siab tshaj plaws ua haujlwm kub rau 3LPE txheej?
A3: Kev pabcuam txuas ntxiv: Tsawg dua lossis sib npaug li 80 degree; luv- lub sij hawm ncov: Tsawg dua lossis sib npaug li 90℃. Rau qhov kub siab dua (Ntau dua lossis sib npaug ntawm 80 degree), 3LPP txheej yog pom zoo.
Q4: 3LPE txheej tshuaj xyuas qhov zoo li cas?
A4: Kev tshuaj xyuas nruj suav nrog:
Kev ntsuam xyuas Thickness: 10+ ntsuas ib lub yeeb nkab (weld apex qhov tseem ceeb)
Kev kuaj xyuas hnub so: 100% kev kuaj xyuas (25 kV) rau txheej txuas ntxiv
Adhesion test: Peel zog Ntau dua los yog sib npaug rau 100 N / cm, tsis muaj delamination
Impact test: Ntau dua lossis sib npaug rau 10 J / mm (txheej txheej txheej)
Q5: Daim ntawv pov thawj dab tsi yog muab nrog cov kav dej?
A5: Cov ntaub ntawv pov thawj tag nrho suav nrog:
API 5L PSL1 / PSL2 daim ntawv pov thawj
NACE TM0284 HIC/SSC test report
3LPE txheej tshuaj xyuas daim ntawv pov thawj (DIN 30670)
MTC (Cov Khoom Siv Xeem Ntawv Pov Thawj) nrog cov lej ntsuas kub
ISO 9001, ISO 14001, OHSAS 18001 daim ntawv pov thawj
Peb qhov chaw nyob
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