GB/T 9711-2021 – Petroleum and Natural Gas Industries – Steel Pipeline Transportation Systems - Blog

Tsab ntawv tam sim no: GB / T 9711-2021(Hloov GB/T 9711.1-1997, GB/T 9711.2-1999, thiab GB/T 9711.3-2017)

Ua raws li: API 5L: 2018 / ISO 3183: 2023
Luam tawm los ntawm: Standardization Administration ntawm Tuam Tshoj (SAC)

Txheej txheem cej luam

GB/T 9711yog covpremier Suav teb chaws tus qauvrausteel kav siv nyob rau hauv cov roj thiab roj pipeline tsheb thauj mus los. Nws qhia txog qhovYam tsawg kawg nkaus uas yuav tsum tau muaj rau kev tsim khoom, kev sim, thiab kev tswj kom zoontawmseamless thiab welded steel kavnpaj rau lubonshore thiab offshore kis tau tus mob ntawm roj av, natural gas, thiab lwm yam khoom.

Tsim kom muaj kev sib raug zoo nrogAPI 5L (47th Ed., 2023)thiabTS EN ISO 3183, GB/T 9711 kom ntseeg tautechnical compatibility, kev nyab xeeb, thiab kev ntseeg siabnyob rau hauv siab -siab, loj - txoj kab uas hla pipeline tej yaam num thoob plaws Tuam Tshoj thiab lub ntiaj teb no lub zog infrastructure.

✅ GB / T 9711 yog Suav Suav tau txais kev lees paub thoob ntiaj teb cov kav dej, ua nws ib qho tseem ceeb specification rau domestic thiab thoob ntiaj teb kev yuav khoom.

Scope

Parameter	Kev piav qhia
Hom yeeb nkab	- Seamless (SML) - Longitudinal Submerged Arc Welded (LSAW / UOE / JCOE) - Kauv Submerged Arc Welded (SSAW / HSAW) - Electric Resistance Welded (ERW)
Qhov Loj	DN 50 rau DN 2000 (NPS 2 "mus rau 80")
Phab ntsa Thickness	Txog li 100 hli (nyob ntawm txoj kab uas hla thiab qib)
Daim ntawv thov	Onshore / offshore transmission pipelines, sib sau cov kab, cov kab xa tawm, roj cia, thiab cov chaw nres tsheb hauv nroog
Qib Siab	Siab -siab, ntev - kis tau tus mob

Khoom Specification Levels (PSL)

GB/T 9711 txais aob - theem khoom specification system, zoo tib yam rau API 5L:

Qib	Kev piav qhia	Cov Lus Qhia Tseem Ceeb
PSL1	Qib theem Kev pabcuam dav dav	- Standard tshuaj thiab mechanical zog - 100% NDT (UT lossis ET) - Kev ntsuas hydrostatic - EN 10204 3.1 daim ntawv pov thawj tshuaj xyuas
PSL2	Txhim kho qib Kev pabcuam hnyav (siab siab, qis kub, qaub)	- Tighter tshuaj muaj pes tsawg leeg txwv - Yuav tsum tau Charpy V- ntsuas qhov cuam tshuam - Kev tshuaj xyuas tag nrho weld seam (UT + RT lossis PAUT) - Hardness tswj (tsawg dua lossis sib npaug rau 250 HV10) - HIC/SSC xaiv tau rau kev pabcuam qaub - EN 10204 3.2 daim ntawv pov thawj nrog ceeb toom lub cev pov thawj

Tag nrho cov kav dej GB/T 9711 yuav tsum tau raws li PSL1 yam tsawg kawg nkaus; PSL2 yuav tsum muaj rau cov ntawv thov tseem ceeb.

Steel Qib (Line Pipe Qib)

Cov qhab nia raug xaiv los ntawmL + yam tsawg kawg nkaus tawm lub zog hauv MPa(Ib yam li ISO 3183 / API 5L):

Qib	Yield zog (min)	Tensile zog (min)	Kev siv yam
L245 / B	245 MPa (35,500 psi)	415 MPa rau	Kev faib tawm hauv zos
L290 / X42	290 MPa rau	435 MPa ua	Cov kav dej hauv cheeb tsam
L360 / X52	360 MPa	520 MPa rau	Onshore kis tau tus mob
L415 / X60	415 MPa rau	530 MPa ua	Siab - kab siab
L450 / X65	450 MPa	570 MPa ua	Ntev - cov kav dej nyob deb
L485 / X70	485 MPa ua	605MPa ua	Offshore, Arctic, siab - muaj peev xwm
L555 / X80	555 MPa ua	690 MPa ua	Ultra-siab- kis tau tus mob
L625 / X90	625 MPa ua	765 MPa ua	Tom ntej no -cov kav xa hluav taws xob (tsuas siv)
L690 / X100	690 MPa ua	825 MPa ua	Kev sim / niche daim ntawv thov

"X" qib (xws li X70) feem ntau siv hauv North America; Qib "L" yog ISO / API thoob ntiaj teb kev tsim qauv.

Cov Lus Qhia Tseem Ceeb

Kev xav tau	Kev piav qhia
Kev tsim khoom	Seamless, LSAW, SSAW, ERW - txhua tus yuav tsum ua raws li cov txheej txheem nruj
Kev kho cua sov	Yuav tsum tau: Normalizing, quenching & tempering (Q&T), los yog thermomechanical ua
Tsis yog -Kev Ntsuas Kev Puas Tsuaj (NDT)	- 100% Kev kuaj ultrasonic (UT)los yogElectromagnetic Testing (ET)ntawm lub cev - 100% Kev ntsuas hluav taws xob (RT)los yogPhased Array UT (PAUT)ntawm welds (PSL2)
Hydrostatic Test	100% ua tiav tshwj tsis yog raug zam los ntawm tag nrho NDT
Dimensional Tswj	nruj tolerances ntawm OD, phab ntsa thickness, ncaj, thiab ovality
Traceability	Tag nrho cov kab hluav taws xob los ntawm slab mus rau cov yeeb nkab tiav
Kos npe	Yuav tsum suav nrog tus qauv, qib, qhov loj me, PSL, chaw tsim khoom, tus lej xov tooj cua sov, thiab lwm yam.

Optional Requirements (rau hnyav ib puag ncig)

HIC Resistance(Hydrogen{0}}Induced Cracking) - Ib NACE TM0284

SSC Resistance(Sulfide Stress Cracking) - Rau NACE TM0177 / ISO 15156

Tsawg-Tsub Toughness- Charpy cuam tshuam rau -40℃lossis qis dua

Z-Kev taw qhia Tensile Properties- Rau tuab- cov kav dej muaj phab ntsa (Z15, Z25, Z35)

Seam Weld Toughness- Kev ntsuam xyuas qhov cuam tshuam ntxiv ntawm thaj chaw weld

Hardness Tswj- Max 250 HV10 hauv vuam thiab HAZ (PSL2)

Kev sib piv nrog API 5L

Feature	GB/T 9711	API 5L
Scope	Ib yam	Ib yam
Qib	L245-L690 (ib yam li API 5L)	B, X42–X100 (sib npaug)
PSL1 / PSL2	Ua kom tiav	Tus qauv qub
Kev sim	Ib yam kev cai	Ib yam
Daim ntawv pov thawj	Tsis muaj API Monogram, tab sis feem ntau yuav tsum tau kuaj thib peb - tog	API 5L Monogram muaj ntawv tso cai los ntawm API
Kev siv khw	Yuav tsum tau nyob hauv Suav teb; txais thoob ntiaj teb	Ntiaj teb no tus qauv, dav siv nyob rau hauv Suav teb

GB/T 9711=Suav version ntawm API 5L, nrog me me editorial sib txawv.

Daim ntawv thov

National roj thiab roj kav kav dej (piv txwv li, West-East Gas Pipeline)
Offshore platforms thiab subsea pipelines
LNG thiab cov chaw cia roj
Cov chaw nres tsheb roj hauv nroog
Hla -txoj haujlwm kav dej ciam teb (piv txwv li, Tuam Tshoj-Central Asia, Russia-Tuam Tshoj)
Roj teb sib sau ua ke thiab kis systems

Cov lus xaus

Feature	Specification
Txuj	GB/T 9711-2021
Sib npaug rau	API 5L: 2018 / ISO 3183: 2023
Hom yeeb nkab	Seamless, LSAW, SSAW, ERW
Qhov Loj	DN 50 - DN 2000 (NPS 2 "- 80")
Qib	L245 (B) to L690 (X100)
PSL Qib	PSL1 (basic), PSL2 (kho kom zoo)
Cov Kev Xeem Tseem Ceeb	Tensile, Impact (PSL2), NDT (UT/RT), Hydrotest
Kev xaiv tshwj xeeb	HIC, SSC, qis-temp, Z-test
Qhov System	GB / T 19001 (ISO 9001) xav tau rau PSL2