API 5L Qib X70 PSL2 Seamless Yeeb Nkab
API 5L Qib X70 PSL2 Seamless Yeeb Nkabyog ib qho ultra-siab- lub zog carbon steel kab yeeb nkab siv rau kev thauj mus los ntawm cov roj thiab cov nkev.
X70qhia qhov tsawg kawg nkaus yield zog ntawm70,000 psi (485 MPa).
PSL2qhia txog qib siab ntawm cov khoom tshwj xeeb nrog rau qhov yuav tsum tau kuaj xyuas, txwv cov tshuaj lom neeg nruj, thiab txhais tau tias qhov siab tshaj plaws tawm los.
Seamless (SMLS)manufacturing xyuas kom tsis muaj longitudinal weld seam, tso cai rau cov yeeb nkab los tswj cov kev ntxhov siab sab hauv thiab hnyav ib puag ncig kev ntxhov siab ntau dua kev ntseeg siab dua welded lwm txoj kev.
Kev txhawj xeeb txog kev pheej hmoo zoo?Nyem rau thov cov qauv tshuaj ntsuam xyuas los ntawm SGS / TUV rau peb cov kav dej X70 PSL2.
API 5L Qib X70 PSL2 Specification Table
| Yam khoom | Kev piav qhia |
| Txuj | API Spec 5L (46th Edition) / ISO 3183 |
| Qib | X70 / L485 |
| Qib khoom | PSL2 (Product Specification Level 2) |
| Hom kev tsim khoom | Seamless (SMLS) |
| Sab nraud Diameter (OD) | 1/2 "- 24" (Standard Seamless ntau yam) |
| Phab ntsa Thickness (WT) | SCH 20, SCH 40, SCH 80, SCH 160, SCH XXS (Txog 60mm) |
| Ntev | Ib leeg Random (SRL), Ob Chav Random (DRL), Tsau 12m |
| Xaus Xaus | Beveled End (BE), Plain End (PE) |
| Txheej txheej xaiv | FBE, 3LPE, 3LPP, Internal Epoxy hauv ob sab phlu |
Chemical Composition Table (Max % rau SMLS PSL2)
X70 xav tau micro- alloying cov ntsiab lus kom ua tiav lub zog siab.
| Cov pa roj carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Silicon (Si) | Nb/V/Ti |
| 0.24% | 1.80% | 0.025% | 0.015% | 0.45% | Ib tus neeg lossis cov nyiaj txwv |
| Carbon sib npaug (CEiiw) | Tsawg dua lossis sib npaug rau 0.43 (Rau C> 0.12%) |
Mechanical Properties Table (PSL2)
PSL2 xav tau ob qho tib si yam tsawg kawg nkaus thiab qhov siab tshaj plaws rau lub zog los xyuas kom meej ductility.
| Khoom | Tus nqi (Qib X70 / L485 PSL2) |
| Yield zog (Min - Max) | 485 - 635 MPa (70, 300 - 92, 100 psi) |
| Tensile zog (Min - Max) | 570 - 760 MPa (82, 700 - 110, 200 psi) |
| Yield rau Tensile Ratio | Tsawg dua los yog sib npaug rau 0.93 (Maximum) |
| Elongation (Min) | Muab xam los ntawm tus ntoo khaub lig- cheeb tsam |
| Charpy Impact Toughness | Yuav tsum xeem (feem ntau ntawm 0℃lossis -20 degree) |
API 5L X70 Pipe Dimensions
Common phab ntsa thicknesses (mm) ib ASME B36.10M rau X70 Seamless.
| NPS | OD (mm) | SCH 40 (hli) | SCH 80 (hli) | SCH 120 (hli) | SCH 160 (hli) |
| 6" | 168.3 | 7.11 | 10.97 | 14.27 | 18.26 |
| 8" | 219.1 | 8.18 | 12.70 | 18.26 | 23.01 |
| 12" | 323.8 | 10.31 | 17.48 | 25.40 | 33.32 |
| 16" | 406.4 | 12.70 | 21.44 | 31.75 | 40.49 |
| 24" | 610.0 | 17.48 | 30.96 | 46.02 | 59.54 |
Kev ntsuam xyuas xa mus rau API 5L X70 PSL2 Pipe
PSL2 cov kav dej tau raug kuaj nruj kom lav kev nyab xeeb nyob rau hauv siab - ib puag ncig siab.
Hydrostatic Test:100% ntawm cov kav dej raug kuaj xyuas kom tsis txhob muaj qhov xau thaum muaj kev kub ntxhov.
Tensile Test:Ntsuas yield, tensile zog, thiab elongation.
CVN Impact Test:Yuav tsum tau Charpy V-Qhov ntsuas ntsuas ntawm cov yeeb nkab lub cev kom ntseeg tau tias muaj zog tawg.
DWT Test:Tee Weight Tear test (rau cov kav dej> OD 16 ") kom ntseeg tau tias cov khoom tawg.
NDT (Tsis yog -Kev kuaj kev puas tsuaj):Tag nrho lub cev Ultrasonic (UT) lossis Electromagnetic (EM) tshuaj xyuas kom pom qhov tsis zoo hauv lub cev.
Visual & Dimensional Inspection:Txheeb xyuas qhov ncaj, OD, WT, thiab qhov tsis xws luag.
Kev tsim khoom ntawm API 5L X70 PSL2 Kab Yeeb
| Theem | Txheej txheem piav qhia |
| 1. Billet cua sov | Khoom round steel billets yog rhuab nyob rau hauv ib tug teb hearth rauv. |
| 2. Kev tho | Qhov kub kub yog pierced los ntawm ib tug mandrel los tsim ib tug hollow raj. |
| 3. Rolling | Lub raj yog elongated thiab phab ntsa thickness yog txo los ntawm ib tug multi- sawv zeb. |
| 4. Sizing/stretching | Cov yeeb nkab tau dhau los ntawm cov sizing mills kom ncav cuag qhov kawg OD qhov ntev. |
| 5. Kev kho cua sov | Yuav tsum tau X70 PSL2 (Quenching & Tempering) kom ncav cuag X70 cov khoom. |
| 6. Ua tiav | Txias, straightening, thiab txiav mus rau qhov ntev. |
Daim ntawv thov ntawm API 5L X70 Kab Yeeb
Vim nws lub zog siab, X70 tau tshwj tseg rau cov ntawv thov uas xav tau tshaj plaws:
Ntev -Nyob deb Trunklines:Tsiv loj heev ntawm cov roj/roj ntau txhiab mais nrog kev khiav hauj lwm siab.
Offshore / Deepwater Pipelines:Resisting siab sab nraud dej siab thiab sab hauv kua siab.
Siab -Cov kav dej siab siab:Qhov twg txo cov phab ntsa thickness txuag cov khoom tseem ceeb nqi.
Arctic/Cold Environments:Qhov twg siab tawv (PSL2) tiv thaiv cov pob txha tawg hauv qhov txias txias.
Kev Xa Khoom
Rau API 5L X70 PSL2, cov yeeb nkab yuav tsum raug xa mus rau hauv lub tshav kub-kho lub xeev:
Q (Quenched thiab Tempered):Feem ntau cov mob rau X70 SMLS. Cov hlau yog rhuab, txias sai heev (quenched), thiab tom qab ntawd rov ua dua (tempered) kom ua tiav qhov kev pom zoo ntawm ultra- siab zog thiab siab toughness.
N (Normalized):Tsawg dua rau X70; siv yog hais tias cov chemistry tso cai rau lub zog lub hom phiaj kom tau raws li grain refinement.
API 5L X70 PSL2 pipeline rau roj thiab roj Hoobkas
API 5L X70 PSL2 roj thiab roj pipelines test equipments
API 5L X70 PSL2 Roj thiab roj xa cov yeeb nkab Certificate
FAQ
Dab tsi yog qhov ntom ntawm X70 steel?
Qhov ntom ntawmAPI 5L X70 steel hlauyog kwv yees li:
Metric:
7,850 kg / m3(los yog 7.85 g / cm3).3 )
Imperial:
0.284 lb/in3(los yog kwv yees li 490 lb/ft3)
API 5L X70 sib npaug ASTM yog dab tsi?
Muajtsis ncaj 1: 1 sib npaugrau API 5L X70 hauv ASTM cov qauv yeeb nkab (xws li ASTM A106 lossis ASTM A53).
Qhov no yog vim hais tias feem ntau cov qauv ASTM cov yeeb nkab tau tsim los rau cov chaw tsim khoom, cov nroj tsuag, thiab cov kav dej siv hluav taws xob, qhov API 5L X70 yog qhov tshwj xeeb siab - lub zog steel tsim tshwj xeeb rauntev -kev deb hla- lub teb chaws cov kav dej.
| Txuj | Qib | Yield zog (Min) | Nco tseg |
| API 5L | X70 | 70,000 psi | Pipeline Standard |
| TS EN ISO 3183 | L485 | 485 MPa ua | Direct Ntiaj teb no sib npaug |
| ASTM A694 Cov khoom lag luam | F70 | 70,000 psi | Sib npaug rauFlanges |
| ASTM A 860 | HWV 70 | 70,000 psi | Sib npaug rauFittings |
| ASTM A106 1 | Qib C | 40,000 psi | Tsis sib npaug (Too qaug zog) |
Cim npe nrov: api 5l qib x70 psl2 seamless yeeb nkab, Tuam Tshoj api 5l qib x70 psl2 seamless yeeb nkab manufacturers, lwm tus neeg, Hoobkas
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