ASTM A252 GR.3 Cov Qauv LSAW (JCOE) Carbon Steel Pipe Featured duab

ASTM A252 GR.3 Cov Qauv LSAW (JCOE) Carbon Steel Yeeb Nkab

Lus piav qhia luv luv:

Qib: GR.1, GR.2, GR.3

Loj: OD: 406 ~ 1500mm WT: 8 ~ 50mm

Kev Them Nyiaj: 30% Deposit, 70% L / C lossis B / L Luam lossis 100% L / C Thaum Pom

Muaj peev xwm muab khoom: Ntau tshaj 100000 tons yuav tsum tau ua nyob rau hauv ib xyoos

Lub Sijhawm Lead: 7-14 Hnub Yog Nyob Hauv Tshuag, 30-45 Hnub Ua Haujlwm

Txheej Txheej: Liab qab / Dub Varnish / 3LPE / Galvanized / Raws li cov neeg siv khoom thov.

Xaus: Plain / Beveled kawg

End Protector: Yas yeeb nkab hau los yog Hlau tiv thaiv

Xa email rau peb Whatsapp Xov tooj

Product Detail

Yam khoom

Khoom cim npe

Product Description ntawmLSAW steel yeeb nkab:

Style	Technical	Khoom siv	Txuj	Qib
Longitudinal Submerged-arc Welded Yeeb Nkab	SAW	Carbon Steel	API 5L PSL1 & PSL2	GR.B, X42,X46,X52,X60,X65,X70, thiab lwm yam
			ASTM A252, ASTM A252	GR.1, GR.2, GR.3
			TS EN 10210 BS	S275JRH, S275J0H, S355J0H, S355J2H, thiab lwm yam
			TS EN 10219 EN 10219	S275JRH, S275J0H, S355J0H, S355J2H, thiab lwm yam

Manufacturing txheej txheem ntawmASTM A252 LSAW Steel Yeeb Nkab:

Longitudinal Submerged-arc Welded (LSAW) Yeeb Nkab txais yuav submerged arc vuam thev naus laus zis, siv cov khoom siv welding, particle tiv thaiv flux faus arc.

LSAW yog cov lus Askiv luv ntawm submerged arc welded ncaj seam steel yeeb nkab.Cov txheej txheem tsim khoom ntawm submerged arc welded ncaj seam steel yeeb nkab suav nrog JCOE txoj kev siv tshuab, coil tsim submerged arc vuam tshuab thiab UOE txoj kev siv tshuab.

Cov txheej txheem ntawm kev tsim Longitudinal Submerged-arc Welded (LSAW) Pipe yog raws li nram no:

Ultrasonic phaj soj ntsuam → ntug milling → pre-bending → sib sau → Pre-welding → Internal vuam → Sab nraud vuam → Ultrasonic tshuaj xyuas → X-ray tshuaj ntsuam → nthuav → hydraulic kuaj → l.Chamfering → Ultrasonic tshuaj xyuas → X-ray tshuaj ntsuam → Sib nqus particle soj ntsuam ntawm lub raj kawg

Tshuaj muaj pes tsawg leeg:

Cov hlau yuav tsum tsis pub tshaj 0.050% phosphorous.

Tensile Requirements

Tensile Requirements
	Qib 1	Qib 2	Qib 3
Tensile zog, min, psi (MPa)	50000 (345)	60 000 (415)	66 000 (455)
Tawm taw tes lossis tawm lub zog, min, psi (MPa)	30000 (205)	35000 (240)	45 000 (310)
Basic yam tsawg kawg nkaus elongation rau nominal phab ntsa thicknesses 6 in. (7.9 mm) los yog ntau tshaj: Elongation nyob rau hauv 8 in. (203.2 mm), min, % Elongation nyob rau hauv 2 in. (50.8 mm), min, %	18 30	14 25	... 20
Rau nominal phab ntsa thicknesses tsawg dua %6 nyob rau hauv. (7.9 hli), kev txiav tawm los ntawm qhov yooj yim yam tsawg kawg nkaus elongation nyob rau hauv 2 in. (50.08 mm) rau txhua Vzi - nyob rau hauv. (0.8 mm) txo nyob rau hauv nominal phab ntsa thickness hauv qab no %6 nyob rau hauv. (7.9 hli), hauv feem pua cov ntsiab lus	1.5 A	1.25 A	1.0A...

Mechanical thiab NDT Tests rauASTM A252 LSAW Steel Yeeb Nkab:

NDT (RT) Testing

Kev Ntsuas Hydrostatic

Mechanical Testing

Bending Test—Qhov ntev txaus ntawm cov yeeb nkab yuav tsum sawv ntsug ntawm qhov txias ntawm 90 ° nyob ib ncig ntawm lub cylindrical mandrel.

Flattening test-Txawm hais tias kev sim tsis tas yuav tsum tau ua, cov yeeb nkab yuav tsum muaj peev xwm ua tau raws li qhov yuav tsum tau ua kom tiav qhov kev xeem.

Hydrostatic Test -tshwj tsis yog raws li kev tso cai, txhua qhov ntev ntawm cov yeeb nkab yuav tsum raug kuaj xyuas hydro-static yam tsis muaj dej los ntawm cov yeeb nkab phab ntsa.

Nondestructive electric test-Raws li lwm txoj hauv kev ntsuas hydro-static, tag nrho lub cev ntawm txhua cov yeeb nkab yuav tsum tau sim nrog kev ntsuas hluav taws xob tsis zoo.qhov twg tsis muaj kev ntsuas hluav taws xob ua tiav, qhov ntev yuav tsum raug cim nrog cov ntawv "NDE"

Kev kuaj ultrasonic

Kev ntsuam xyuas tam sim no

Daim ntawv thov ntawmASTM A252 LSAW Steel Yeeb Nkab:

Cov yeeb nkab xaj raws li qhov tshwj xeeb no yog rau cov yeeb nkab pawg uas lub tog raj kheej steel ua raws li cov neeg nqa khoom mus tas li, lossis ua lub plhaub los tsim cov pob zeb hauv qhov chaw.

Kev kam rau sab nraud txoj kab uas hla, phab ntsa thickness, ntev thiab qhov hnyav:

Sab nraud txoj kab uas hla	Sab nraud txoj kab uas hla ntawm cov yeeb nkab pawg yuav tsum tsis txhob sib txawv ntau tshaj ± 1% ntawm lub cheeb sab nraud.
Phab ntsa thickness	Phab ntsa thickness ntawm txhua qhov chaw yuav tsum tsis txhob ntau tshaj 12.5% raws li teev tseg nominal phab ntsa thickness.
Ntev	Cov yeeb nkab yuav tsum tau muab tso rau hauv ib qho ntev ntev, ob npaug ntawm qhov ntev, lossis ntev ntev raws li tau teev tseg hauv daim ntawv xaj, raws li cov kev txwv hauv qab no:	Ib leeg random lengths	16 txog 25ft (4.88 txog 7.62mm), nti
		Muab ob npaug rau random lengths	Tshaj 25ft (7.62m) nrog qhov nruab nrab yam tsawg kawg nkaus ntawm 35ft (10.67m)
		Uniform ntev	ntev raws li tau teev tseg nrog kev tso cai hloov pauv ntawm ± 1 hauv.
Qhov hnyav	Txhua qhov ntev ntawm cov yeeb nkab yuav tsum tau hnyav nyias thiab nws qhov hnyav yuav tsum tsis txhob sib txawv ntau dua 15% tshaj lossis 5% raws li nws qhov hnyav, suav nrog nws qhov ntev thiab nws qhov hnyav ntawm ib chav tsev ntev.