Cov Hlau Carbon Steels Spiral Welded Yeeb Nkab Rau Cov Kab Dej

Cov Yeeb Nkab Hlau Carbon Welded Rau Cov Kab Dej Duab Tshwj Xeeb

Kev Piav Qhia Luv:

Thoob plaws thaj chaw dav dav ntawm cov khoom siv hauv paus, kev ua haujlwm tsis muaj teeb meem ntawm cov kab ke dej thiab cov txheej txheem kev lag luam vam khom rau qhov ruaj khov thiab ua haujlwm tau zoo ntawm cov kav dej. Ntawm ntau hom kav dej uas siv, cov kav hlau carbon uas sib txuas ua ke tsim nyog tau txais kev saib xyuas rau lawv lub zog zoo dua thiab kev hloov pauv tau yooj yim. Hauv qab no pib piav qhia txog qhov tseem ceeb thiab qhov zoo ntawm cov kav hlau carbon uas sib txuas ua ke hauvcov kab dej thiab vuam yeeb nkab hlau.

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Cov Khoom Qhia Txog Khoom

Cov Cim Npe Khoom

1. Nkag siab txog cov yeeb nkab hlau carbon uas sib txuas ua ke:

Cov yeeb nkab carbon steel kauv sib txuasyog tsim los ntawm cov hlau kauj uas tig mus los thiab vuam ua ke. Cov txheej txheem tsim khoom tshwj xeeb ua rau cov kav dej no muaj zog thiab ruaj khov dua, muaj peev xwm tiv taus kev nyuaj siab sab hauv thiab sab nraud. Lub peev xwm tiv taus kev xeb thiab kev hloov pauv kuj ua rau nws haum rau ntau yam kev siv, suav nrog cov kav dej thiab kev vuam cov kav hlau.

Tus Qauv	Qib hlau	Cov tshuaj lom neeg muaj pes tsawg leeg									Cov khoom siv tensile							Kev Ntsuas Kev Cuam Tshuam Charpy thiab Kev Ntsuas Qhov Hnyav Ntawm Qhov Tso Tawm
		C	Si	Mn	P	S	V	Nb	Ti		CEV4)（%）	Rt0.5 Mpa Tawm zog		Lub zog Tensile Rm Mpa		Rt0.5 / Rm	(L0 = 5.65 √ S0) Kev Ntev A%
		siab tshaj plaws	siab tshaj plaws	siab tshaj plaws	siab tshaj plaws	siab tshaj plaws	siab tshaj plaws	siab tshaj plaws	siab tshaj plaws	Lwm yam	siab tshaj plaws	feeb	siab tshaj plaws	feeb	siab tshaj plaws	siab tshaj plaws	feeb
	L245MB	0.22	0.45	1.2	0.025	0.15	0.05	0.05	0.04	1)	0.4	245	450	415	760	0.93	22	Kev ntsuam xyuas qhov cuam tshuam ntawm Charpy: Lub zog nqus dej ntawm lub cev yeeb nkab thiab cov xov hlau yuav tsum tau kuaj raws li qhov xav tau hauv tus qauv qub. Yog xav paub ntxiv, saib tus qauv qub. Kev ntsuam xyuas qhov hnyav poob: Thaj chaw txiav xaiv tau
GB/T9711-2011 (PSL2)	L290MB	0.22	0.45	1.3	0.025	0.015	0.05	0.05	0.04	1)	0.4	290	495	415			21
	L320MB	0.22	0.45	1.3	0.025	0.015	0.05	0.05	0.04	1)	0.41	320	500	430			21
	L360MB	0.22	0.45	1.4	0.025	0.015				1)	0.41	360	530	460			20
	L390MB	0.22	0.45	1.4	0.025	0.15				1)	0.41	390	545	490			20
	L415MB	0.12	0.45	1.6	0.025	0.015				1)2)3	0.42	415	565	520			18
	L450MB	0.12	0.45	1.6	0.025	0.015				1)2)3	0.43	450	600	535			18
	L485MB	0.12	0.45	1.7	0.025	0.015				1)2)3	0.43	485	635	570			18
	L555MB	0.12	0.45	1.85	0.025	0.015				1)2)3	Kev sib tham	555	705	625	825	0.95	18
	Lus Cim:
	1) 0.015 ≤ Altot ＜ 0.060；N ≤ 0.012； AI—N ≥ 2—1；Cu ≤ 0.25； Ni ≤ 0.30； Cr ≤ 0.30； Mo ≤ 0.10
	2) V + Nb + Ti ≤ 0.015%
	3） Rau txhua qib hlau, Mo yuav ≤ 0.35%, raws li daim ntawv cog lus.
	Mn Cr+Mo+V Cu+Ni 4) CEV=C+ 6+5+5

2. Cov kav dej:

Hauv cov txheej txheem faib dej, kev xa dej huv kom muaj kev nyab xeeb thiab ua tau zoo yog qhov tseem ceeb heev. Cov yeeb nkab carbon steel uas sib txuas ua ke tau ua pov thawj tias yog qhov kev xaiv zoo rau cov yeeb nkab dej vim nws cov yam ntxwv tiv taus xeb. Qhov saum npoo du ntawm cov yeeb nkab no txo qhov kev sib txhuam, ua kom cov dej ntws tas li thiab txo qhov kev co. Tsis tas li ntawd, lub zog thiab kev ruaj khov lav tiv thaiv kev xau, kev tawg, thiab kev puas tsuaj ntawm cov qauv, ua kom muaj kev xa dej txuas ntxiv thiab txhim khu kev qha.

3. Kev vuam yeeb nkab hlau:

Kev lag luam vuam vam khom ntau rau cov yeeb nkab hlau carbon uas muaj kauv vuam rau ntau yam kev siv. Lub zog thiab kev ywj pheej tshwj xeeb ntawm cov yeeb nkab no ua rau lawv zoo tagnrho rau kev vuam cov yeeb nkab hlau. Txawm hais tias tsim cov thoob dej loj, cov kav dej thauj roj thiab roj, lossis cov khoom siv hauv kev lag luam, cov yeeb nkab hlau carbon uas muaj kauv vuam ua lub luag haujlwm tseem ceeb. Kev sib npaug ntawm cov pob qij txha vuam ua kom ntseeg tau tias muaj kev ntseeg siab thiab kev nyab xeeb ntawm cov qauv, txo qhov xav tau kev saib xyuas lossis kho ntau zaus.

4. Cov txiaj ntsig thiab qhov zoo:

4.1 Kev daws teeb meem uas pheej yig: Cov yeeb nkab carbon steel uas vuam ua ke muab kev daws teeb meem uas pheej yig rau kev vuam cov yeeb nkab dej thiab cov yeeb nkab hlau. Lawv lub zog thiab kev tiv thaiv xeb ua rau lub neej ua haujlwm ntev dua, yog li txo cov nqi hloov thiab kev saib xyuas.

4.2 Yooj yim rau kev teeb tsa: Cov thev naus laus zis vuam siv rau hauv cov txheej txheem tsim khoom tuaj yeem tsim cov kav dej ntev dua thiab txuas ntxiv mus, txo qhov xav tau kev sib txuas ntau zaus. Qhov kev tsim qauv no ua rau cov txheej txheem teeb tsa yooj yim, txuag lub sijhawm thiab kev siv zog.

4.3 Kev Siv Tau Ntau Yam: Cov kav hlau carbon uas sib txuas ua ke muaj ntau yam txoj kab uas hla thiab tuab, ua rau lawv siv tau rau ntau yam kev siv. Lawv tuaj yeem hloov kho kom haum rau cov kev xav tau tshwj xeeb ntawm cov haujlwm, hloov kho rau ntau yam kua dej, siab thiab kub.

4.4 Kev tiv thaiv ib puag ncig: Cov hlau carbon yog cov khoom siv rov ua dua tshiab uas pab txhawb rau kev ruaj khov ntawm ib puag ncig. Cov kav dej hlau carbon uas sib txuas ua ke tuaj yeem rov ua dua tshiab thiab rov siv dua, txo cov khib nyiab thiab tiv thaiv cov peev txheej ntuj.

Xaus lus:

Cov peev xwm thiab qhov zoo ntawm cov kav hlau carbon welded hauv cov yeeb nkab dej thiabvuam yeeb nkab hlautsis tuaj yeem raug kwv yees tsis tau. Kev xa dej thiab cov kua dej hauv kev lag luam zoo thiab txhim khu kev qha nyob ntawm lawv qhov ruaj khov, tiv taus corrosion thiab yooj yim ntawm kev teeb tsa. Raws li qhov xav tau rau cov khoom siv muaj zog thiab pheej yig txuas ntxiv nce ntxiv, cov kav dej carbon steel welded yuav tseem yog ib qho tseem ceeb hauv kev ua kom ntseeg tau tias kev ua haujlwm zoo ntawm cov kab ke dej thiab cov txheej txheem kev lag luam thoob plaws ntiaj teb.

Yav dhau los: Qhov Tseem Ceeb ntawm Cov Yeeb Nkab Uas Muaj Kauv Hauv Av API 5L Kab Yeeb Nkab Carbon Pipe Vuam

Tom ntej no: A252 Qib 1 Cov Yeeb Nkab Hlau Hauv Helical Seam Pipeline Gas System

Sau koj cov lus ntawm no thiab xa tuaj rau peb