API 5L 46th Edition Specification rau Kab Yeeb Nkab Scope

Kev Piav Qhia Luv:

Tau teev tseg qhov kev tsim khoom ntawm ob theem khoom (PSL1 thiab PSL2) ntawm cov yeeb nkab hlau tsis sib txuas thiab vuam rau kev siv cov kav dej hauv kev thauj mus los ntawm roj av thiab roj av. Rau kev siv cov khoom siv hauv daim ntawv thov kev pabcuam Sour saib Annex H thiab rau daim ntawv thov kev pabcuam offshore saib Annex J ntawm API5L 45th.

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Cov Khoom Qhia Txog Khoom

Cov Cim Npe Khoom

Kev Xa Khoom

PSL	Kev Xa Khoom	Qib yeeb nkab
PSL1	Raws li dov, normalized, normalizing tsim	A
	Raws li dov, normalizing dov, thermomechanical dov, thermo-mechanical tsim, normalizing tsim, normalized, normalized thiab tempered lossis yog tias pom zoo Q&T SMLS xwb	B
	Raws li dov, normalizing dov, thermomechanical dov, thermo-mechanical tsim, normalizing tsim, normalized, normalized thiab tempered	X42, X46, X52, X56, X60, X65, X70
PSL 2	Raws li dov	BR, X42R
	Normalizing dov, normalizing tsim, normalized lossis normalized thiab tempered	BN, X42N, X46N, X52N, X56N, X60N
	Txias thiab tempered	BQ, X42Q, X46Q, X56Q, X60Q, X65Q, X70Q, X80Q, X90Q, X100Q
	Thermomechanical dov los yog thermomechanical tsim	BM, X42M, X46M, X56M, X60M, X65M, X70M, X80M
	Thermomechanical dov	X90M, X100M, X120M
	Qhov txaus (R, N, Q lossis M) rau PSL2 qib, yog rau qib hlau

Cov Ntaub Ntawv Txog Kev Txiav Txim

Daim ntawv yuav khoom yuav tsum muaj xws li qhov ntau, PSL qib, hom lossis Qib, siv rau API5L, sab nraud txoj kab uas hla, phab ntsa tuab, ntev thiab txhua yam ntxiv lossis cov kev cai ntxiv ntsig txog cov tshuaj lom neeg sib xyaw, cov khoom siv kho tshuab, kev kho cua sov, kev sim ntxiv, cov txheej txheem tsim khoom, cov txheej txheem saum npoo lossis qhov kawg tiav.

Cov Txheej Txheem Tsim Khoom Ib Txwm Muaj

Hom Yeeb Nkab	PSL 1			PSL 2
Hom Yeeb Nkab	Qib A	Qib B	X42 txog X70	B txog X80	X80 txog X100
SMLS	ü	ü	ü	ü	ü
LFW	ü	ü	ü
HFW	ü	ü	ü	ü
LW			ü
SAWL	ü	ü	ü	ü	ü
SAWH	ü	ü	ü	ü	ü
SMLS - Seamless, tsis muaj weld LFW - Cov yeeb nkab vuam zaus tsawg, <70 kHz HFW - Cov yeeb nkab vuam zaus siab, >70 kHz SAWL - Submerge-arc vuam longitudinal welded SAWH - Submerge-arc vuam helical welded

Cov Khoom Pib

Cov hlau ingots, blooms, billets, coils lossis phaj siv rau kev tsim cov yeeb nkab yuav tsum ua los ntawm cov txheej txheem hauv qab no, cov pa oxygen yooj yim, lub cub hluav taws xob lossis qhib qhov cub ua ke nrog cov txheej txheem refining ladle. Rau PSL2, cov hlau yuav tsum raug tua thiab yaj raws li kev coj ua zoo. Coil lossis phaj siv rau PSL2 yeeb nkab yuav tsum tsis muaj kev kho welds.

Cov Tshuaj Lom Zem rau PSL 1 yeeb nkab nrog t ≤ 0.984″

Qib Hlau	Feem pua ntawm pawg,% raws li kev tshuaj xyuas cua sov thiab khoom a, g
Qib Hlau	C siab tshaj plaws b	Mn siab tshaj plaws b	P siab tshaj plaws	S siab tshaj plaws	V siab tshaj plaws	Nb siab tshaj plaws	Ti siab tshaj plaws
Cov Yeeb Nkab Seamless
A	0.22	0.90	0.30	0.30	-	-	-
B	0.28	1.20	0.30	0.30	c, d	c, d	d
X42	0.28	1.30	0.30	0.30	d	d	d
X46	0.28	1.40	0.30	0.30	d	d	d
X52	0.28	1.40	0.30	0.30	d	d	d
X56	0.28	1.40	0.30	0.30	d	d	d
X60	0.28 e	1.40 e	0.30	0.30	f	f	f
X65	0.28 e	1.40 e	0.30	0.30	f	f	f
X70	0.28 e	1.40 e	0.30	0.30	f	f	f
Cov Yeeb Nkab Welded
A	0.22	0.90	0.30	0.30	-	-	-
B	0.26	1.2	0.30	0.30	c, d	c, d	d
X42	0.26	1.3	0.30	0.30	d	d	d
X46	0.26	1.4	0.30	0.30	d	d	d
X52	0.26	1.4	0.30	0.30	d	d	d
X56	0.26	1.4	0.30	0.30	d	d	d
X60	0.26 e	1.40 e	0.30	0.30	f	f	f
X65	0.26 e	1.45 e	0.30	0.30	f	f	f
X70	0.26e	1.65 e	0.30	0.30	f	f	f
Cu ≤ = 0.50% Ni; ≤ 0.50%; Cr ≤ 0.50%; thiab Mo ≤ 0.15% Rau txhua qhov kev txo qis ntawm 0.01% qis dua qhov siab tshaj plaws uas tau teev tseg rau cov pa roj carbon, thiab nce ntawm 0.05% siab dua qhov siab tshaj plaws uas tau teev tseg rau Mn yog qhov tso cai, txog li qhov siab tshaj plaws ntawm 1.65% rau qib ≥ B, tab sis ≤ = X52; txog li qhov siab tshaj plaws ntawm 1.75% rau qib > X52, tab sis < X70; thiab txog li qhov siab tshaj plaws ntawm 2.00% rau X70. Tshwj tsis yog tias pom zoo lwm yam NB + V ≤ 0.06% Nb + V + TI ≤ 0.15% Tshwj tsis yog tias tau pom zoo ua lwm yam. Tshwj tsis yog tias pom zoo lwm yam, NB + V = Ti ≤ 0.15% Tsis pub ntxiv B ntxiv thiab B seem ≤ 0.001%

Cov Tshuaj Lom Zem rau PSL 2 yeeb nkab nrog t ≤ 0.984″

Qib Hlau	Feem pua ntawm pawg,% raws li kev tshuaj xyuas cua sov thiab khoom																		Carbon Equiv a
	C siab tshaj plaws b		Si siab tshaj plaws		Mn siab tshaj plaws b		P siab tshaj plaws		S siab tshaj plaws		V siab tshaj plaws		Nb siab tshaj plaws		Ti siab tshaj plaws		Lwm yam		CE IIW siab tshaj plaws		CE Pcm siab tshaj plaws
Cov Yeeb Nkab Seamless thiab Welded
BR	0.24		0.40		1.20		0.025		0.015		c		c		0.04		e,l		.043		0.25
X42R	0.24		0.40		1.20		0.025		0.015		0.06		0.05		0.04		e,l		.043		0.25
BN	0.24		0.40		1.20		0.025		0.015		c		c		0.04		e,l		.043		0.25
X42N	0.24		0.40		1.20		0.025		0.015		0.06		0.05		0.04		e,l		.043		0.25
X46N	0.24		0.40		1.40		0.025		0.015		0.07		0.05		0.04		d,e,l		.043		0.25
X52N	0.24		0.45		1.40		0.025		0.015		0.10		0.05		0.04		d,e,l		.043		0.25
X56N	0.24		0.45		1.40		0.025		0.015		0.10f		0.05		0.04		d,e,l		.043		0.25
X60N	0.24f		0.45f		1.40f		0.025		0.015		0.10f		0.05f		0.04f		g, h, l		Raws li tau pom zoo
BQ	0.18		0.45		1.40		0.025		0.015		0.05		0.05		0.04		e,l		.043		0.25
X42Q	0.18		0.45		1.40		0.025		0.015		0.05		0.05		0.04		e,l		.043		0.25
X46Q	0.18		0.45		1.40		0.025		0.015		0.05		0.05		0.04		e,l		.043		0.25
X52Q	0.18		0.45		1.50		0.025		0.015		0.05		0.05		0.04		e,l		.043		0.25
X56Q	0.18		0.45f		1.50		0.025		0.015		0.07		0.05		0.04		e,l		.043		0.25
X60Q	0.18f		0.45f		1.70f		0.025		0.015		g		g		g		h,l		.043		0.25
X65Q	0.18f		0.45f		1.70f		0.025		0.015		g		g		g		h,l		.043		0.25
X70Q	0.18f		0.45f		1.80f		0.025		0.015		g		g		g		h,l		.043		0.25
X80Q	0.18f		0.45f		1.90f		0.025		0.015		g		g		g		kuv,j		Raws li tau pom zoo
X90Q	0.16f		0.45f		1.90		0.020		0.010		g		g		g		j,k		Raws li tau pom zoo
X100Q	0.16f		0.45f		1.90		0.020		0.010		g		g		g		j,k		Raws li tau pom zoo
Cov Yeeb Nkab Welded
BM		0.22		0.45		1.20		0.025		0.015		0.05		0.05		0.04		e,l		.043	0.25
X42M		0.22		0.45		1.30		0.025		0.015		0.05		0.05		0.04		e,l		.043	0.25
X46M		0.22		0.45		1.30		0.025		0.015		0.05		0.05		0.04		e,l		.043	0.25
X52M		0.22		0.45		1.40		0.025		0.015		d		d		d		e,l		.043	0.25
X56M		0.22		0.45f		1.40		0.025		0.015		d		d		d		e,l		.043	0.25
X60M		0.12f		0.45f		1.60f		0.025		0.015		g		g		g		h,l		.043	0.25
X65M		0.12f		0.45f		1.60f		0.025		0.015		g		g		g		h,l		.043	0.25
X70M		0.12f		0.45f		1.70f		0.025		0.015		g		g		g		h,l		.043	0.25
X80M		0.12f		0.45f		1.85f		0.025		0.015		g		g		g		kuv,j		.043f	0.25
X90M		0.10		0.55f		2.10f		0.020		0.010		g		g		g		kuv,j		-	0.25
X100M		0.10		0.55f		2.10f		0.020		0.010		g		g		g		kuv,j		-	0.25
SMLS t> 0.787”, CE txwv yuav tsum yog raws li tau pom zoo. CEIIW txwv siv fi C > 0.12% thiab CEPcm txwv siv yog tias C ≤ 0.12% Rau txhua qhov kev txo qis ntawm 0.01% qis dua qhov siab tshaj plaws uas tau teev tseg rau cov pa roj carbon, thiab nce ntawm 0.05% siab dua qhov siab tshaj plaws uas tau teev tseg rau Mn yog qhov tso cai, txog li qhov siab tshaj plaws ntawm 1.65% rau qib ≥ B, tab sis ≤ = X52; txog li qhov siab tshaj plaws ntawm 1.75% rau qib > X52, tab sis < X70; thiab txog li qhov siab tshaj plaws ntawm 2.00% rau X70. Tshwj tsis yog tias pom zoo ua lwm yam Nb = V ≤ 0.06% Nb = V = Ti ≤ 0.15% Tshwj tsis yog tias pom zoo, Cu ≤ 0.50%; Ni ≤ 0.30% Cr ≤ 0.30% thiab Mo ≤ 0.15% Tshwj tsis yog tias tau pom zoo ua lwm yam Tshwj tsis yog tias pom zoo lwm yam, Nb + V + Ti ≤ 0.15% Tshwj tsis yog tias pom zoo, Cu ≤ 0.50% Ni ≤ 0.50% Cr ≤ 0.50% thiab MO ≤ 0.50% Tshwj tsis yog tias pom zoo, Cu ≤ 0.50% Ni ≤ 1.00% Cr ≤ 0.50% thiab MO ≤ 0.50% B ≤ 0.004% Tshwj tsis yog tias pom zoo, Cu ≤ 0.50% Ni ≤ 1.00% Cr ≤ 0.55% thiab MO ≤ 0.80% Rau txhua qib yeeb nkab PSL 2 tshwj tsis yog cov qib uas muaj cov lus hauv qab j sau tseg, cov hauv qab no siv tau. Tshwj tsis yog tias pom zoo lwm yam tsis pub ntxiv B thiab seem B ≤ 0.001%.

Tensile thiab Yield - PSL1 thiab PSL2

Qib Yeeb Nkab	Cov Khoom Tensile - Lub Cev Yeeb Nkab ntawm SMLS thiab Cov Yeeb Nkab Welded PSL 1			Seam ntawm Welded Yeeb Nkab
Qib Yeeb Nkab	Lub zog ntawm cov qoob loo a R_t0,5PSI Min	Lub zog tensile a Rm PSI Min	Kev ntev (hauv 2in Af % feeb)	Lub zog tensile b Rm PSI Min
A	30,500	48,600	c	48,600
B	35,500	60,200	c	60,200
X42	42,100	60,200	c	60,200
X46	46,400	63,100	c	63,100
X52	52,200	66,700	c	66,700
X56	56,600	71,100	c	71,100
X60	60,200	75,400	c	75,400
X65	65,300	77,500	c	77,500
X70	70,300	82,700	c	82,700
a. Rau qib nruab nrab, qhov sib txawv ntawm lub zog tensile tsawg kawg nkaus thiab qhov tsawg kawg nkaus yield rau lub cev yeeb nkab yuav tsum yog raws li tau muab rau qib siab dua tom ntej. b. Rau cov qib nruab nrab, lub zog tensile tsawg kawg nkaus rau qhov vuam seam yuav tsum zoo ib yam li tau txiav txim siab rau lub cev siv ko taw sau tseg a. c. Qhov tsawg kawg nkaus elongation teev tseg, A_f,qhia ua feem pua thiab puag ncig mus rau feem pua ze tshaj plaws, yuav tsum txiav txim siab siv cov qauv hauv qab no: Qhov twg C yog 1 940 rau kev xam siv Si units thiab 625 000 rau kev xam siv USC units A_xcyog qhov siv tauthaj tsam ntawm qhov chaw seem ntawm daim ntawv xeem tensile, qhia hauv square millimeters (square inches), raws li nram no - Rau cov khoom sim ncig uas muaj qhov ntev li ntawm 130mm²(0.20 nti²) rau 12.7 hli (0.500 nti) thiab 8.9 hli (.350 nti) qhov loj ntawm daim ntawv xeem; thiab 65 hli²(0.10 nti²) rau cov khoom sim uas muaj txoj kab uas hla 6.4 hli (0.250 nti). - Rau cov khoom xeem tag nrho, qhov tsawg dua ntawm a) 485 hli²(0.75 nti²) thiab b) thaj tsam ntawm daim ntawv xeem, tau los ntawm kev siv txoj kab uas hla sab nraud thiab phab ntsa tuab ntawm cov yeeb nkab, puag ncig mus rau qhov ze tshaj plaws 10 hli²(0.10 nti²) - Rau cov khoom sim strip, qhov tsawg dua ntawm a) 485 hli²(0.75 nti²) thiab b) thaj tsam ntawm daim ntawv xeem, tau los ntawm kev siv qhov dav ntawm daim ntawv xeem thiab qhov tuab ntawm phab ntsa ntawm cov yeeb nkab, puag ncig mus rau qhov ze tshaj plaws 10 hli²(0.10 nti²) U yog lub zog tensile tsawg kawg nkaus uas tau teev tseg, qhia hauv megapascals (phaus ib square inch)

Qib Yeeb Nkab	Cov Khoom Tensile - Lub Cev Yeeb Nkab ntawm SMLS thiab Cov Yeeb Nkab Welded PSL 2						Seam ntawm Welded Yeeb Nkab
	Lub zog ntawm cov qoob loo a R_t0,5PSI Min		Lub zog tensile a Rm PSI Min		Qhov sib piv a, c R_10,5IR_m	Kev ntev (hauv 2in) Af %	Lub zog tensile d R_m(psi)
	Yam tsawg kawg nkaus	Qhov siab tshaj plaws	Yam tsawg kawg nkaus	Qhov siab tshaj plaws	Qhov siab tshaj plaws	Yam tsawg kawg nkaus	Yam tsawg kawg nkaus
BR, BN, BQ, BM	35,500	65,300	60,200	95,000	0.93	f	60,200
X42, X42R, X2Q, X42M	42,100	71,800	60,200	95,000	0.93	f	60,200
X46N, X46Q, X46M	46,400	76,100	63,100	95,000	0.93	f	63,100
X52N, X52Q, X52M	52,200	76,900	66,700	110,200	0.93	f	66,700
X56N, X56Q, X56M	56,600	79,000	71,100	110,200	0.93	f	71,100
X60N, X60Q, S60M	60,200	81,900	75,400	110,200	0.93	f	75,400
X65Q, X65M	65,300	87,000	77,600	110,200	0.93	f	76,600
X70Q, X65M	70,300	92,100	82,700	110,200	0.93	f	82,700
X80Q, X80M	80, .500	102,300	90,600	119,700	0.93	f	90,600
a. Rau qib nruab nrab, saib cov lus qhia tag nrho API5L. b. rau cov qib> X90 xa mus rau qhov kev qhia tshwj xeeb API5L tag nrho. c. Qhov kev txwv no siv rau cov ncuav qab zib nrog D> 12.750 hauv d. Rau cov qib nruab nrab, lub zog tensile tsawg kawg nkaus rau qhov vuam seam yuav tsum yog tib tus nqi raws li tau txiav txim siab rau lub cev yeeb nkab siv ko taw a. e. rau cov yeeb nkab uas xav tau kev sim ntev, lub zog tso zis siab tshaj plaws yuav tsum yog ≤ 71,800 psi f. Qhov tsawg kawg nkaus elongation teev tseg, A_f,qhia ua feem pua thiab puag ncig mus rau feem pua ze tshaj plaws, yuav tsum txiav txim siab siv cov qauv hauv qab no: Qhov twg C yog 1 940 rau kev xam siv Si units thiab 625 000 rau kev xam siv USC units A_xcyog qhov siv tauthaj tsam ntawm qhov chaw seem ntawm daim ntawv xeem tensile, qhia hauv square millimeters (square inches), raws li nram no - Rau cov khoom sim ncig uas muaj qhov ntev li ntawm 130mm²(0.20 nti²) rau 12.7 hli (0.500 nti) thiab 8.9 hli (.350 nti) qhov loj ntawm daim ntawv xeem; thiab 65 hli²(0.10 nti²) rau cov khoom sim uas muaj txoj kab uas hla 6.4 hli (0.250 nti). - Rau cov khoom xeem tag nrho, qhov tsawg dua ntawm a) 485 hli²(0.75 nti²) thiab b) thaj tsam ntawm daim ntawv xeem, tau los ntawm kev siv txoj kab uas hla sab nraud thiab phab ntsa tuab ntawm cov yeeb nkab, puag ncig mus rau qhov ze tshaj plaws 10 hli²(0.10 nti²) - Rau cov khoom sim strip, qhov tsawg dua ntawm a) 485 hli²(0.75 nti²) thiab b) thaj tsam ntawm daim ntawv xeem, tau los ntawm kev siv qhov dav ntawm daim ntawv xeem thiab qhov tuab ntawm phab ntsa ntawm cov yeeb nkab, puag ncig mus rau qhov ze tshaj plaws 10 hli²(0.10 nti²) U yog lub zog tensile tsawg kawg nkaus uas tau teev tseg, qhia hauv megapascals (phaus ib square inch g. Cov nqi qis dua rau R_10,5IR_mtej zaum yuav teev tseglos ntawm kev pom zoo h. rau cov qib > x90 saib cov lus qhia tag nrho API5L.

Kev Ntsuas Hydrostatic

Cov yeeb nkab yuav tsum tiv taus qhov kev sim hydrostatic yam tsis muaj kev xau los ntawm cov xov hlau lossis lub cev yeeb nkab. Cov khoom sib koom ua ke tsis tas yuav tsum tau sim hydrostatic yog tias cov ntu yeeb nkab siv tau sim tiav.

Kev Ntsuas Khoov

Yuav tsis muaj kab nrib pleb tshwm sim rau hauv ib feem ntawm daim ntawv xeem thiab yuav tsis muaj qhov qhib ntawm qhov vuam.

Kev Ntsuas Kom Sib Nqus

Cov qauv lees txais rau kev sim ua kom tiaj tus yuav tsum yog
a) Cov kav dej EW D<12.750 hauv
-≥ X60 nrog T≥0.500in, yuav tsum tsis muaj qhov qhib ntawm qhov vuam ua ntej qhov kev ncua deb ntawm cov phaj tsawg dua 66% ntawm lub cheeb sab nraud thawj. Rau txhua qib thiab phab ntsa, 50%.
-Rau cov yeeb nkab nrog D / t> 10, yuav tsum tsis muaj qhov qhib ntawm qhov vuam ua ntej qhov kev ncua deb ntawm cov phaj tsawg dua 30% ntawm lub cheeb sab nraud thawj.
b) Rau lwm qhov ntau thiab tsawg saib cov lus qhia tag nrho API5L

Kev ntsuam xyuas CVN rau PSL2

Ntau qhov loj thiab qib ntawm cov yeeb nkab PSL2 xav tau CVN. Cov yeeb nkab tsis sib txuas yuav tsum tau kuaj hauv lub cev. Cov yeeb nkab vuam yuav tsum tau kuaj hauv Lub Cev, Cov Yeeb Nkab Weld thiab thaj chaw kub cuam tshuam (HAZ). Saib cov lus qhia tag nrho API5L rau daim ntawv qhia ntawm qhov loj thiab qib thiab cov nqi zog nqus uas xav tau.

Kev kam rau sab nraud, tawm ntawm qhov sib npaug thiab phab ntsa tuab

Qhov Taub Sab Nraud D (hauv)	Kev kam rau siab, nti d				Kev kam rau siab tawm ntawm qhov sib npaug hauv
	Cov yeeb nkab tshwj tsis yog qhov kawg a		Qhov kawg ntawm cov yeeb nkab a, b, c		Cov yeeb nkab tshwj tsis yog qhov kawg a	Qhov Kawg ntawm Yeeb Nkab a, b, c
	SMLS Yeeb Nkab	Cov Yeeb Nkab Welded	SMLS Yeeb Nkab	Cov Yeeb Nkab Welded
< 2.375	-0.031 txog + 0.016		- 0.031 txog + 0.016		0.048	0.036
≥2.375 txog 6.625	+/- 0.0075D		- 0.016 txog + 0.063		0.020D rau Los ntawm kev pom zoo rau	0.015D rau Los ntawm kev pom zoo rau
>6.625 txog 24.000	+/- 0.0075D	+/- 0.0075D, tab sis siab tshaj plaws ntawm 0.125	+/- 0.005D, tab sis siab tshaj plaws ntawm 0.063		0.020D	0.015D
>24 txog 56	+/- 0.01D	+/- 0.005D tab sis siab tshaj plaws ntawm 0.160	+/- 0.079	+/- 0.063	0.015D rau tab sis siab tshaj plaws ntawm 0.060 Rau Los ntawm kev pom zoo rau	0.01D rau tab sis siab tshaj plaws ntawm 0.500 Rau Los ntawm kev pom zoo rau
>56	Raws li tau pom zoo
Qhov kawg ntawm cov yeeb nkab suav nrog qhov ntev ntawm 4 nti ntawm txhua qhov kawg ntawm cov yeeb nkab Rau cov yeeb nkab SMLS qhov kev kam rau siab siv rau t≤0.984in thiab qhov kev kam rau siab rau cov yeeb nkab tuab dua yuav tsum yog raws li tau pom zoo Rau cov yeeb nkab uas nthuav dav nrog D≥8.625in thiab rau cov yeeb nkab uas tsis nthuav dav, qhov kev kam rau siab ntawm txoj kab uas hla thiab qhov kev kam rau siab ntawm qhov sib txawv yuav raug txiav txim siab siv qhov kev xam sab hauv txoj kab uas hla lossis ntsuas sab hauv txoj kab uas hla es tsis yog OD uas tau teev tseg. Txhawm rau txiav txim siab qhov ua raws li qhov kam rau siab ntawm txoj kab uas hla, txoj kab uas hla ntawm cov yeeb nkab yog txhais tias yog qhov ncig ntawm cov yeeb nkab hauv txhua lub dav hlau ncig faib los ntawm Pi.

Phab ntsa tuab t nti	Kev kam rau siab a nti
SMLS yeeb nkab b
≤ 0.157	+ 0.024 / – 0.020
> 0.157 txog < 0.948	+ 0.150t / – 0.125t
≥ 0.984	+ 0.146 los yog + 0.1t, seb qhov twg loj dua - 0.120 los yog – 0.1t, seb qhov twg loj dua
Cov yeeb nkab vuam c, d
≤ 0.197	+/- 0.020
> 0.197 txog < 0.591	+/- 0.1t
≥ 0.591	+/- 0.060
Yog tias daim ntawv xaj yuav khoom qhia txog qhov kev kam rau siab rau phab ntsa tuab me dua li tus nqi siv tau uas tau muab rau hauv lub rooj no, qhov kev kam rau siab ntxiv rau phab ntsa tuab yuav tsum tau nce ntxiv los ntawm qhov ntau txaus kom tswj tau qhov kev kam rau siab siv tau. Rau cov yeeb nkab nrog D≥ 14.000 hauv thiab t≥0.984in, qhov kev kam rau siab ntawm phab ntsa hauv zos yuav tshaj qhov kev kam rau siab ntxiv rau qhov tuab ntawm phab ntsa los ntawm ntxiv 0.05t muab tias qhov kev kam rau siab ntxiv rau qhov hnyav tsis dhau. Qhov kev kam rau siab ntxiv rau phab ntsa tuab tsis siv rau thaj chaw vuam Saib tag nrho API5L spec kom paub meej ntxiv