API 5L-Specification rau Kab Yeeb

yam ntxwv kev

Txuj: API 5L (PSL1, PSL2), GB / T9711 (GB / T9711.1, B / T9711.2)

Qib: API A25, Gr. A, Gr. B, X42, X46, X52, X56, X60, X65, X70, X80

Lub npe piav qhia: API 5L-Specification rau Kab Yeeb

Qhov Loj Loj:

OD: 1/2 "mus rau 2", 3", 4", 6", 8", 10", 12", 16", 18", 20", 24" mus rau 40"

NWS: SCH 10, SCH 20, SCH 30, SCH 40, SCH 80, SCH XS, SCH 160

Ntau hom:

Seamless - Kub Rolled lossis Cold Rolled; Welded-ERW (Electric Resistance Welded), SAW (Submerged Arc Welded), DSAW (Ob chav SAW), LSAW (Longitudinal SAW), HSAW (Helical SAW), SSAW (Spiral SAW)

Ntev:

Ib qho random ntev thiab ob chav random ntev lossis raws li tus neeg siv khoom thov

Cov yeeb nkab kawg:

Cov yeeb nkab kawg yuav tsum yog dawb, threaded, belled, los yog npaj rau tshwj xeeb couplings, raws li tau teev nyob rau hauv daim ntawv xaj. Helical seam yeeb nkab yuav tsum tsis txhob threaded. Sab hauv thiab sab nraud ntawm qhov kawg ntawm tag nrho cov yeeb nkab yuav tsum tsis muaj burrs.

Kev kho cua sov:

Cov txheej txheem kho cua sov yuav tsum ua raws li cov txheej txheem sau tseg. Cov yeeb nkab uas muaj rau qhov kev qhia tshwj xeeb no tuaj yeem yog dov, normalized, normalized thiab tempered, subcritically stress relieved, los yog subcritically muaj hnub nyoog hardened.

X Qib yuav raug quenched thiab tempered.

Qib B yeeb nkab uas yog quenched thiab tempered yuav tsum seamless thiab yuav tsum tau raws li kev pom zoo ntawm tus neeg yuav khoom thiab cov chaw tsim khoom.

Rau cov qib siab dua X42, lub vuam seam thiab tag nrho cov tshav kub cuam tshuam yuav tsum tau kho cua sov kom simulate ib qho kev kho cua sov.

Rau qib X42 thiab qis dua, cov vuam seam yuav tsum tau kho zoo sib xws, los yog cov yeeb nkab yuav tsum tau ua raws li qhov tsis muaj martensite tsis nyob.

Kev kho deg: Dub Painting, Anti-Corrosion Oil, 3LPE / 3PE, FBE

nta

Nws muaj lub zog siab, toughness thiab zoo weldability

Zoo corrosion kuj thiab siab tsis kam

Kev ua haujlwm kub zoo heev

Yooj yim installation thiab tsis tshua muaj nqi txij nkawm

Tiv thaiv lub zog loj thaum lub sijhawm thauj mus los

Muaj peev xwm thauj cov roj thiab roj kom muaj kev nyab xeeb thiab siv tau zoo

Txhawm rau thauj cov roj av los ntawm sab hnub poob mus rau sab hnub tuaj, Tuam Tshoj tau pib tsim lub West-East Gas Transmission Project txij li xyoo 2002. Tam sim no, nws tau ua tiav kev tsim kho peb lub cev, ob peb ceg kab thiab khi kab, ua tiav 40. , 000-kilometer zog hlab ntsha. Cov ceg ntoo tau txais txiaj ntsig rau 18 lub xeev, hauv nroog thiab thaj chaw muaj kev ywj pheej, tau txais txiaj ntsig 500 lab tus tib neeg.

West-East Gas Transmission Project tau dhau los ua qhov project gas pipeline uas tau txais txiaj ntsig ntau tshaj plaws ntawm cov neeg nyob hauv Suav teb thiab txawm tias lub ntiaj teb. Nws tseem yog qhov project roj av nrog qhov ntev tshaj plaws, qhov loj tshaj plaws ntawm cov yeeb nkab txoj kab uas hla, cov phab ntsa tuab ntawm cov yeeb nkab, qhov siab tshaj plaws kev sib kis, cov cuab yeej siv siab tshaj plaws, thiab cov kev tsim kho ntau tshaj plaws hauv keeb kwm ntawm Suav pipeline kev tsim kho. Lub raj xa dej engineering, kev tsim kho qhov ntsuas thiab cov ntsuas kev ua haujlwm tsis tshua muaj thiab sophisticated nyob rau hauv lub ntiaj teb no.

Hauv qhov project no, domestic steel pipeline ua lub luag haujlwm txiav txim siab.

Raws li txoj cai, pipeline steel yog cov khoom siv hlau siv los ua cov kav dej steel, nrog rau cov phaj nruab nrab thiab tuab thiab coils. Tom qab ua tiav, cov raj xa dej tuaj yeem muab dov rau hauv cov kav dej loj loj nyob rau theem tom qab, thiab tom qab ntawd cov kav dej ywj pheej no tuaj yeem txuas rau hauv cov kav dej los ntawm kev sib txuas los ua ib txoj hauv kev steel rau kev thauj cov pa roj.

Cov raj xa hluav taws xob feem ntau yog faus hauv av lossis hauv hiav txwv sib sib zog nqus, thiab cov kav xa hluav taws xob yuav tsum tau tiv thaiv kev cuam tshuam ntawm cov xwm txheej geological sib txawv thaum lub sijhawm ua haujlwm. Ntxiv mus, txhawm rau txhim kho kev sib kis tau zoo ntawm cov roj av, tib neeg ib txwm xav ua kom txoj kab uas hla ntawm cov raj xa dej thiab qhov kev sib kis siab thaum tsim cov kav xa hluav taws xob loj loj. Cov xwm txheej tshwj xeeb no ua rau muaj kev sib tw loj rau lub zog ntawm cov kav dej hlau.

Nyob rau hauv kev sib tw kom ua tau raws li qhov yuav tsum tau ua ntawm kev thauj mus los hauv pipeline, niaj hnub pipeline steel feem ntau muaj cov yam ntxwv ntawm lub zog siab, siab toughness thiab zoo weldability. Siab toughness thiab weldability txhais tau hais tias cov kav hlau muaj peev xwm tswj tau kev ncaj ncees nyob rau hauv cov tsiaj qus ib puag ncig thiab tsis yooj yim tawg los yog deform nyob rau hauv lub siab cuam tshuam. Lub zog siab ua kom ntseeg tau tias cov kav hlau ua los ntawm cov raj xa dej muaj cov kab loj loj thiab, tib lub sijhawm, tuaj yeem tiv taus qhov kub siab heev thaum lub caij tsheb thauj mus los.

API 5L yeeb nkab yog cov kav dej siv los thauj cov roj thiab roj. Nws yog ua los ntawm cov hlau muaj zog, uas muaj cov yam ntxwv ntawm qhov kub thiab txias tsis kam, siab tsis kam thiab corrosion kuj, thiab yog dav siv hauv kev lag luam roj thiab roj.

Ib qho zoo ntawm cov yeeb nkab no yog nws lub zog siab. Vim tias cov roj thiab roj tau muab tso rau hauv lub zog loj thaum lub sijhawm thauj mus los, cov kav dej yuav tsum muaj lub zog txaus kom muaj kev nyab xeeb kev thauj mus los. Cov khoom siv hlau muaj zog ntawm cov roj kab yeeb nkab tuaj yeem tiv taus qhov kub siab ib puag ncig kom ntseeg tau tias kev thauj mus los zoo ntawm cov roj thiab roj.

Tsis tas li ntawd, API 5L yeeb nkab kuj muaj qhov zoo corrosion kuj. Cov roj thiab cov nkev roj feem ntau muaj qee yam corrosive. Yog tias cov khoom siv ntawm lub raj xa dej tsis yog corrosion-resistant, nws yuav ua rau muaj teeb meem kev nyab xeeb xws li kev puas tsuaj thiab xau. Txhawm rau ua cov roj kab yeeb nkab, cov tuam ntxhab siv cov cuab yeej tshwj xeeb los tiv thaiv corrosion, uas tuaj yeem tiv taus qhov yaig ntawm cov tshuaj corrosive thiab ua kom lub neej ntev ntawm cov kav dej.

Ntxiv mus, roj kab yeeb nkab kuj muaj qhov kub thiab txias ua haujlwm zoo. Thaum lub sij hawm thauj cov roj thiab roj, qhov kub thiab txias feem ntau yog siab, yog li cov khoom siv kav dej yuav tsum muaj peev xwm tiv taus cua sov. Cov kav dej no yog tsim los ntawm cov ntaub ntawv alloy uas tiv taus qhov kub thiab txias, uas tuaj yeem ua haujlwm ruaj ntseg thaum tshav kub kub hnyav thiab ua kom ruaj khov ntawm kev thauj mus los ntawm cov roj thiab cov nkev.

Ntxiv rau qhov zoo li saum toj no, roj av kab yeeb nkab kuj muaj cov yam ntxwv ntawm kev yooj yim installation thiab tsis tshua muaj nqi txij nkawm. Nws tsim yog tsim nyog thiab cov txheej txheem installation yog yooj yim. Ntxiv mus, nws tuaj yeem tso tau sai, thiab qhov kev nce qib ntawm qhov project tuaj yeem nrawm. Nyob rau tib lub sijhawm, tus nqi saib xyuas ntawm API 5L yeeb nkab yog qhov tsawg, uas txo cov nqi khiav lag luam ntawm kev lag luam.

Hauv kev xaus, cov roj kab yeeb nkab yog qhov tseem ceeb hauv kev lag luam roj thiab roj. Nws lub zog siab, corrosion kuj thiab kub tsis kam ua rau nws zoo tagnrho rau kev nyab xeeb thiab kev thauj mus los ntawm roj thiab roj. Nyob rau hauv lub neej yav tom ntej, nrog kev xav tau ntau ntxiv rau cov roj thiab cov nkev, cov kev cia siab ntawm kev siv cov kav dej yuav ua kom dav dua.

cov kev cai chemical

API 5L Kab YeebTshuaj muaj pes tsawg leeg

TABLE 1A PSL 1 Cov Khoom Siv Tshuaj Rau Kev Ntsuas Kub thiab Cov Khoom Muag (%)
Qib & Qib	Carbon (Max)^a	Manganese (Max)^a	Phosphorus		Sulfur (Max)	Titanium (Max)	Lwm yam
Qib & Qib	Carbon (Max)^a	Manganese (Max)^a	(Min)	(Max)	Sulfur (Max)	Titanium (Max)	Lwm yam
Seamless
A25, CI II	0.21	0.6		0.03	0.03
A25, CI II	0.21	0.6	0.045	0.08	0.03
A	0.22	0.9		0.03	0.03
B	0.28	1.2		0.03	0.03	0.04	b, c, d
X42	0.28	1.3		0.03	0.03	0.04	c, d
X46, X52, X56	0.28	1.4		0.03	0.03	0.04	c, d
X60^f	0.28	1.4		0.03	0.03	0.04	c, d
X65^f, X70^f	0.28	1.4		0.03	0.03	0.06	c, d
Welded
A25, CI II	0.21	0.6		0.03	0.03
A25, CI II	0.21	0.6	0.045	0.08	0.03
A	0.22	0.9		0.03	0.03
B	0.26	1.2		0.03	0.03	0.04	b, c, d
X42	0.26	1.3		0.03	0.03	0.04	c, d
X46, X52, X56	0.26	1.4		0.03	0.03	0.04	c, d
X60^f	0.26	1.4		0.03	0.03	0.04	c, d
X65^f	0.26	1.45		0.03	0.03	0.06	c, d
X70^f	0.26	1.65		0.03	0.03	0.06	c, d

TAB 1BPSL2Chemical Requirements for Heat and Product Analyzes (%)
Qib	Carbon (Max)^a	Manganese (Max)^a	Phosphorus (Max)	Sulfur (Max)	Titanium (Max)	Lwm yam
Seamless
B	0.24	1.2	0.025	0.015	0.04	c, d, e
X42	0.24	1.3	0.025	0.015	0.04	c, d
X46, X52, X56, X60^f	0.24	1.4	0.025	0.015	0.04	c, d
X65^f, X70^f, X80^f	0.24	1.4	0.025	0.015	0.06	c, d
Welded
B	0.22	1.2	0.025	0.015	0.04	c, d, e
X42	0.22	1.3	0.025	0.015	0.04	c, d
X46, X52, X56	0.22	1.4	0.025	0.015	0.04	c, d
X60^f	0.22	1.4	0.025	0.015	0.04	c, d
X65^f	0.22	1.45	0.025	0.015	0.06	c, d
X70^f	0.22	1.65	0.025	0.015	0.06	c, d
X80^f	0.22	1.85	0.025	0.015	0.06	c, d

Cov lus hauv qab rau Tables 1A thiab 1B:

^aRau txhua qhov kev txo qis ntawm {{0}}.01% qis dua cov ntsiab lus siab tshaj plaws carbon, qhov nce ntawm 0.05% saum toj no cov ntsiab lus siab manganese tau tso cai, mus txog qhov siab tshaj ntawm 1.50% rau Qib X42 txog X52, mus txog qhov siab tshaj ntawm 1.65% rau cov qib siab dua X52 tab sis tsawg dua X70, thiab mus txog 2.00% rau Qib X70 thiab siab dua.

^bCov txiaj ntsig ntawm columbium [niobium] thiab vanadium cov ntsiab lus yuav tsum tsis pub tshaj 0.03%, tshwj tsis yog tias, los ntawm kev pom zoo ntawm tus neeg yuav khoom thiab cov chaw tsim khoom, qhov kev xaiv siab tshaj plaws yuav raug tsim.

^cColumbium [niobium], vanadium, lossis kev sib xyaw ua ke tuaj yeem siv los ntawm kev txiav txim siab ntawm cov chaw tsim khoom.

^dQhov sib npaug ntawm cov ntsiab lus ntawm columbium [niobium], vanadium, thiab titanium yuav tsum tsis pub tshaj 0.15%.

^eCov txiaj ntsig ntawm columbium [niobium] thiab vanadium cov ntsiab lus yuav tsum tsis pub ntau tshaj 0.06% tshwj tsis yog tias, los ntawm kev pom zoo ntawm tus neeg yuav khoom thiab cov chaw tsim khoom, qhov kev xaiv ntau tshaj plaws yuav raug tsim.

^fLwm cov tshuaj muaj pes tsawg leeg tuaj yeem muab los ntawm kev pom zoo ntawm tus neeg yuav khoom thiab cov chaw tsim khoom, muab cov kev txwv ntawm cov lus hauv qab^d, thiab tabular txwv rau phosphorus thiab sulfur yog ua tau.

API 5L Kab YeebMechanical Properties

TABLE 2 Tensile Requirements rau PSL 1
Yield zog (yam tsawg kawg)			Qhov kawg Tensile Strength (yam tsawg kawg)		Elongation hauv 2 nti. (50.8 mm) (yam tsawg kawg) (%)
Qib	psi	MPa	psi	MPa	Elongation hauv 2 nti. (50.8 mm) (yam tsawg kawg) (%)
A25	25,000	172	45,000	310	a
A	30,000	207	48,000	331	a
B	35,000	241	60,000	414	a
X42	42,000	290	60,000	414	a
X46	46,000	317	63,000	434	a
X52	52,000	359	66,000	455	a
X56	56,000	386	71,000	490	a
X60	60,000	414	75,000	517	a
X65	65,000	448	77,000	531	a
X70	70,000	483	82,000	565	a

TABSIS3Tensile Requirements rau PSL2
Yield zog (yam tsawg kawg)			Yield Strength (Qhov siab tshaj plaws^b)		Qhov kawg Tensile Strength (yam tsawg kawg nkaus)		Qhov kawg Tensile Strength (Maximum^c)		Elongation hauv 2 nti. (50.8 mm) (yam tsawg kawg) (%)
Qib	psi	MPa	psi	MPa	psi	MPa	psi	MPa	Elongation hauv 2 nti. (50.8 mm) (yam tsawg kawg) (%)
B	35,000	241	65,000^d	448	60,000	414	110,000	758	a
X42	42,000	290	72,000	496	60,000	414	110,000	758	a
X46	46,000	317	76,000	524	63,000	434	110,000	758	a
X52	52,000	359	77,000	531	66,000	455	110,000	758	a
X56	56,000	386	79.000	544	71,000	490	110,000	758	a
X60	60,000	414	82,000	565	75,000	517	110,000	758	a
X65	65,000	448	87.000	600	77,000	531	110,000	758	a
X70	70,000	483	90.000	621	82,000	565	110,000	758	a
X80	80,000	552	100.000^e	690	90,000	621	120,000	827	a

Cov lus hauv qab no rau TAB 2 thiab 3:

^aQhov tsawg kawg nkaus elongation nyob rau hauv 2 in. (50.8 mm) yuav tsum tau txiav txim los ntawm cov nram qab no kab zauv:

S. Customary Unit Equation

e = 625,000

SI Unit Equation

e =1,944

qhov twg

e=yam tsawg kawg nkaus elongation nyob rau hauv 2 nti.

Ib qho=siv tau qhov ntsuas tensile qhov chaw, raws li hauv qab no:

a. Rau round bar qauv:

— 0.20 nyob rau hauv.²(130 hli²) rau cov {{0}}.500 in. thiab 0.350 in. specimens,

— 0.10 nyob rau hauv.²(65 hli²) rau tus qauv 0.250 in.

b. Rau tag nrho seem piv txwv, qhov me me ntawm (i) 0.75 nyob rau hauv.²(485 hli²) thiab (ii) ntu ntu ntawm qhov ntsuas qhov ntsuas, suav nrog qhov ntsuas sab nraud ntawm txoj kab uas hla ntawm cov yeeb nkab thiab cov phab ntsa tuab ntawm cov yeeb nkab, sib npaug rau qhov ze tshaj 0.01 hauv.²(10 hli²);

c. Rau cov qauv strips, qhov me me ntawm (i) 0.75 in.²(485 hli²) thiab (ii) ntu ntu ntawm qhov ntsuas qhov ntsuas, suav nrog qhov dav dav ntawm cov qauv kuaj thiab cov txheej txheem phab ntsa tuab ntawm cov yeeb nkab, sib npaug rau qhov ze tshaj 0.01in.²(10 hli²).

U =qhia qhov tsawg kawg nkaus lub zog tensile hauv psi (MPa).

TAB 4 Kev kam rau siab rau phab ntsa Thickness
Ua siab ntev^a(Percent ntawm Specified Phab Ntsa Thickness)
Loj	Hom yeeb nkab	Qib B lossis qis dua	Qib X42 lossis siab dua
⩽2 7/8	Tag nrho	+20.0, -12.5	+15.0, -12.5
>2 7/8 thiab <20	Tag nrho	+15.0, -12.5	+15.0, -12.5
⩾20	Welded	+17.5, -12.5	+19.5, -8.0
⩾20	Seamless	+15.0, -12.5	+17.5, -10.0

^aYog tias qhov kev zam tsis zoo me dua li cov npe teev tseg los ntawm tus neeg yuav khoom, qhov zoo siab ntev yuav tsum tau nce ntxiv rau qhov siv tau tag nrho cov kev kam rau siab nyob rau hauv feem pua tsawg dua phab ntsa thickness tsis zoo kam rau ua.

TAB 5 HAUJ LWM rau qhov hnyav
Ntau	Kev kam rau siab (%)
Ib qhov ntev, tshwj xeeb cov yeeb nkab kawg lossis A25 yeeb nkab	+10, -5.0
Ib leeg ntev, lwm cov yeeb nkab	+10, -3.5
Carloads, Qib A25, 40000lb (18144kg) lossis ntau dua	-2.5
Carloads, uas tsis yog Qib A25, 40000lb (18144kg) lossis ntau dua	-1.75
Carloads, tag nrho cov qib, tsawg dua 40000lb (18144kg)	-3.5
Cov khoom xaj, Qib A25, 40000lb (18144kg) lossis ntau dua	-3.5
Cov khoom xaj, uas tsis yog Qib A25, 40000lb (18144kg) lossis ntau dua	-1.75
Cov khoom xaj, txhua qib, tsawg dua 40000lb (18144kg)	-3.5

Nco tseg:

1. Qhov hnyav hnyav siv rau qhov ntsuas qhov hnyav rau cov yeeb nkab threaded-thiab-coupled thiab rau cov tabulated los yog xam qhov hnyav rau cov yeeb nkab kawg. Qhov tsis zoo ntawm phab ntsa thickness kam rau ua me dua li cov teev hauv Table 4 tau teev tseg los ntawm tus neeg yuav khoom, qhov hnyav ntxiv rau qhov ntev yuav tsum tau nce mus rau 22.5% tsawg dua phab ntsa thickness tsis kam rau siab.

2. Rau carloads uas muaj cov yeeb nkab los ntawm ntau tshaj ib yam khoom, lub carload kam rau ua yuav tsum tau siv raws li ib tug neeg txiav txim yam khoom.

3. Kev kam rau siab rau cov khoom txiav txim siv rau tag nrho cov khoom ntawm cov yeeb nkab xa mus rau cov khoom xaj.

xeem cov cai

Tensile Test

Tensile xeem orientation yuav tsum nyob rau hauv lub longitudinal kev taw qhia rau txhua qhov ntau thiab tsawg ntawm kub ua hauj lwm los yog kub kho seamless yeeb nkab thiab tag nrho cov welded yeeb nkab tsawg tshaj li 8.⁵/8. Rau seamless yeeb nkab, ib tug transverse puag ncig bar los yog lub nplhaib expansion specimen yuav raug hloov rau cov longitudinal specimen los ntawm kev pom zoo ntawm tus neeg yuav khoom thiab cov chaw tsim khoom. Rau weld yeeb nkab thiab txias nthuav seamless yeeb nkab loj 8⁵/8 thiab loj dua, tensile xeem orientation yuav tsum nyob rau hauv transverse kev taw qhia. Ntawm qhov kev xaiv ntawm cov chaw tsim khoom, cov qauv yuav yog tag nrho seem, strip specimen, lossis round bar specimens. Hom, qhov loj me, thiab kev taw qhia ntawm cov qauv yuav tsum raug qhia. Kev ntsuam xyuas ntawm cov kab nrib plebyuav tsum tau nrog cov kev ntsuas nkhaus-ntsej muag haum, los yog lub ntsej muag ntsuas lub ntsej muag yog tias qhov chaw tuav ntawm cov qauv tau raug tshuab los txo qhov curvature lossis tau flattened yam tsis muaj cua sov. Rau cov qauv strip, qhov dav dav hauv qhov ntev yuav tsum yog 1 1/2 in. (38.1 mm) lossis 3/4 in. (19.0 mm) rau cov yeeb nkab loj {{10. }}/2 los yog me dua; 1 1/2 nti (38.1 mm) lossis 1 nti (25.4 mm) rau

yeeb nkab loj dua 3 1/2 mus txog qhov loj 6 5/8, suav nrog; thiab 1 1/2 in. (38.1 mm) rau cov yeeb nkab loj dua qhov loj 6 5/8.

Flattening Test

Kev ntsuam xyuas flattening yuav tsum tau ua rau hluav taws xob welded, nruam welded, thiab laser welded yeeb nkab. Cov qauv kuaj yuav tsum muaj tsawg kawg yog 2 1/2 nti. (63.5mm) ntev. Rau hluav taws xob welded yeeb nkab uas yuav tsum tau ua los ntawm ib tug kub stretch zeb, lub flattening kuaj cov qauv yuav tsum tau ua ntej los yog tom qab kev kho mob, ntawm qhov kev xaiv ntawm cov chaw tsim tshuaj paus.

Khoov Test

Ib qho tag nrho cov qauv ntawm qhov ntev ntawm qhov tsim nyog, txiav los ntawm qhov ntev ntawm cov yeeb nkab los ntawm txhua qhov ntau ntawm 25 tons (22.7 Mg), los yog ib feem ntawm nws, rau cov yeeb nkab ntawm nominal loj 1.900 thiab me dua, thiab los ntawm txhua qhov ntau ntawm 50 tons (45.5 Mg), los yog feem ntawm qhov ntawd, rau cov yeeb nkab loj 2 3/8 yuav tsum tau khoov txias mus txog 90 degree, nyob ib ncig ntawm lub mandrel uas muaj txoj kab uas hla tsis tshaj kaum ob npaug ntawm txoj kab uas hla sab nraud ntawm cov yeeb nkab tau sim, nrog rau qhov vuam nyob ntawm kwv yees li 45 degree. los ntawm qhov chaw ntawm kev sib cuag ntawm cov qauv nrog lub mandrel.

Guided-Bend Test

Cov qauv kuaj yuav tsum tau muab los ntawm lub helical los yog txhua qhov ntev seam weld nyob rau hauv qhov ntev ntawm cov yeeb nkab los ntawm txhua qhov ntau ntawm 50 qhov ntev lossis tsawg dua ntawm txhua qhov sib xyaw ua ke ntawm cov kab sib txawv sab nraud, cov phab ntsa tuab, thiab qib; thiab los ntawm cov pob txha kawg weld nyob rau hauv ib qhov ntev ntawm cov yeeb nkab los ntawm txhua qhov ntau ntawm 50 qhov ntev los yog tsawg dua ntawm txhua qhov sib xyaw ua ke ntawm cov kab sib txuas sab nraud, cov phab ntsa tuab, thiab qib ntawm cov khoom tiav helical seam yeeb nkab uas muaj skelp kawg welds. Cov qauv kuaj yuav tsum tsis muaj cov welds kho.

Hydrostatic Test

Txhua qhov ntev ntawm cov yeeb nkab yuav tsum tiv taus, tsis muaj qhov to, kev tshuaj xyuas hydrostatic test. Kev ntsuas siab rau txhua qhov ntau thiab tsawg ntawm cov yeeb nkab seamless thiab rau cov yeeb nkab welded hauv qhov ntau thiab tsawg 18 thiab me dua, yuav tsum tuav tsis tsawg

tshaj 5 vib nas this. Kev ntsuas siab rau welded yeeb nkab hauv qhov ntau thiab tsawg 20 thiab loj dua yuav tsum tuav tsis pub tsawg tshaj 10 vib nas this. Rau threaded-thiab-coupled yeeb nkab, qhov kev ntsuam xyuas yuav tsum tau siv nrog cov couplings ua los ntawm lub hwj chim-tight yog hais tias lub hwj chim-tight pleev yog teev nyob rau hauv daim ntawv xaj, tshwj tsis yog cov yeeb nkab loj dua 12 3/4 tej zaum yuav raug sim hauv qhov kev mob siab kawg. Rau cov yeeb nkab threaded nrog couplings ua los tuav-nruj, qhov kev ntsuam xyuas hydrostatic yuav tsum tau ua rau ntawm cov yeeb nkab nyob rau hauv lub tiaj-kawg los yog xov-tsuas yog mob los yog nrog couplings thov, tshwj tsis yog tias muaj kev pom zoo los ntawm tus neeg yuav khoom thiab cov chaw tsim khoom.

kev txiav txim cov ntaub ntawv

Thaum yuav cov yeeb nkab API 5L, cov ntsiab lus hauv qab no yuav tsum tau teev tseg hauv daim ntawv xaj khoom lossis cov ntaub ntawv cov ntaub ntawv:

1.PSL qib (PSL1 lossis PSL2),

2. Qib ntawm cov yeeb nkab yuav tsum tau (tsim cov yeeb nkab tsim nyog),

3. Yeeb Nkab Loj, Sab nraud txoj kab uas hla, thiab thickness,

4.Random lossis kwv yees ntev,

5.Seamless los yog Welded,

6.Quantity ntawm cov yeeb nkab yuav tsum tau (tag nrho ntev los yog tag nrho cov loj),

7. Cov yeeb nkab kawg txuas,

8.Coating thiab hauv ob sab phlu yuav tsum tau,

9. Kev pabcuam kua qaub lossis qab zib,

10.Txhua yam kev cai cim,

11.Txhua yam kev xav tau tshwj xeeb, thiab lwm yam.

daim ntawv thov

API 5L kav dej yuav siv tau raws li onshore thiab offshore submarine pipelines, hwj chim-gen & boiler raj thiab kav, raj rau chiv thiab pertrochemical kev lag luam, mechanical & structural hlab thiab kav los yog OCTG (Oil Country Tubular khoom).

ntim

Ob qhov kawg kaw nrog lub kaus mom tiv thaiv hauv cov yas lossis hlau, bundling nrog galvanized steel sawb lossis nqa txoj siv. Tag nrho yog ntim rau hauv hnab woven, yog li nws tsim nyog tiv thaiv rau hiav txwv tsim nyog xa los yog raws li kev thov.

GB	API
L175	A25
L210	A
L245	B
L290	X42
L320	X46
L360	X52
L390	X56
L415	X60
L450	X65
L485	X70
L555	X80
L625	X90
L690	X100
L830	X120

API 5L-Specification rau kab yeeb nkab