Loj Diameter Steel Yeeb Nkab

Aug 11, 2026

Loj txoj kab uas hla steel yeeb nkab yog hais txog welded steel yeeb nkab nrog cov kab uas hla sab saum toj 406 hli (16 hauv). Loj txoj kab uas hla steel yeeb nkab nqi ranges ntawm$780 rau $1,350 ib tujxyoo 2026, nyob ntawm cov txheej txheem tsim khoom (EFW, SSAW, LSAW), phab ntsa thickness, thiab qib steel.

LSAW tubmuab qhov siab tshaj plaws qhov tseeb thiab tau dav siv rau API 5L siab - cov kav xa dej siab.
EFW cevyog tsim rau txoj kab uas hla loj, hnyav phab ntsa, thiab tshwj xeeb alloy daim ntaub ntawv qhov twg vuam zoo thiab kev soj ntsuam yuav tsum nruj.
SSAW tubmuab tus nqi qis tshaj plaws thiab kev ua tau zoo heev rau cov diameters loj heev.

Kev tsim khoom	Txoj kab uas hla
LSAW	16 "- 60" (406mm-1524mm)
SSAW	20 "- 120" (508mm-3048mm)
EFW	24 "- 100" (610mm - 2540mm +)

Hom yeeb nkab	Cov Khoom Siv	Hom Qib
Seamless Yeeb Nkab	Carbon Steel	ASTM A106 Gr.B/C API 5L B
Seamless Yeeb Nkab	Stainless hlau	ASTM A312 TP 304 / 304L / 316L
Seamless Yeeb Nkab	Duplex Stainless hlau	ASTM A790 UNS S32205 / S32750 Cov Lus Qhia
EFW tub	Stainless hlau	ASTM A358 TP304L, TP316L thiab ASTM A358
EFW tub	Nickel Alloy	Inconel 625, Hastelloy C276
EFW tub	Duplex Hlau	ASTM A928 UNS S32205, UNS S32750
SSAW Tube	Carbon Steel	API 5L B, X42, X52, X60
LSAW Tube	High Strength Line Pipe	API 5L X52, X60, X65, X70, X80

LSAW yeeb nkab yog tsim los ntawm steel phaj:

Phaj txiav
Ntug milling
Ua ntej- dabtsi yog khoov
JCO forming
Internal vuam
Sab nraud vuam
Kev nthuav dav
Kev ntsuam xyuas hydrostatic
Ultrasonic soj ntsuam

Cov txheej txheem "JCOE" tsim ib lub siab -zoo longitudinal weld seam.

Large Diameter Welded LSAW Steel Pipe Manufacturing Process

SSAW yeeb nkab siv steel kauj:

Coil uncoiling
Ntug npaj
Kauv sib sau
Internal vuam
Sab nraud vuam
Txiav
Kev tshuaj xyuas

Large Diameter Welded SSAW Steel Pipe Manufacturing Process

EFW yog tsim los ntawm vuam steel daim hlau siv hluav taws xob arc vuam txoj kev.

Kev siv ntau:

Thick phab ntsa siab piping
Stainless hlau loj txoj kab uas hla
Nickel alloy yeeb nkab
Kub exchanger piping

Yam khoom	Seamless Yeeb Nkab	EFW tub	SSAW Tube	LSAW Tube
Lub npe	Seamless Steel Yeeb Nkab	Electric Fusion Welded Yeeb Nkab	Spiral Submerged Arc Welded Yeeb Nkab	Longitudinal Submerged Arc Welded Yeeb Nkab
Kev tsim khoom	Steel billet → Cua sov → Piercing → Kub dov / Cold drawing	Hlau phaj → Sib sau → Hluav taws xob fusion vuam → Kev kho cua sov	Hlau coil → Kauv txoj kev → Submerged arc vuam	Hlau phaj → JCOE txoj kev → Longitudinal submerged arc vuam
Weld Seam	Tsis muaj weld seam	Longitudinal weld seam	Kauv weld seam	Longitudinal weld seam
Main Standards	ASTM A106, ASTM A312, ASTM A790, API 5L	ASTM A358, ASTM A672, ASTM A691	API 5L, ASTM A252	API 5L, ASTM A671 / A672, API 5L, ASTM A671 thiab A672
Sab nraud txoj kab uas hla	6mm-660mm (0.24 "-26")	300mm-{1}} hli (12"-118"+)	400 mm–{1}} mm (16”–118”+)	400mm-{1}} hli (16"-80"+)
Phab ntsa Thickness	Nruab nrab rau tuab phab ntsa (0.5-50mm)	Phab ntsa nruab nrab mus rau tuab heev (3-80 mm)	Phab ntsa nruab nrab (6-25 mm)	Phab ntsa nruab nrab mus rau tuab (6-50 mm)
Nqi	Siab tshaj	Siab dua	qis tshaj	Nruab nrab
Haum Txoj kab uas hla	Me me thiab nruab nrab txoj kab uas hla	Loj thiab ntxiv - txoj kab uas hla loj	Loj txoj kab uas hla	Loj txoj kab uas hla
Daim ntawv thov	Siab -cov kav dej, boilers, kub exchangers	Cov nroj tsuag tshuaj, stainless hlau thiab alloy piping	Cov kav dej, qis- cov kav xa dej siab nruab nrab	Roj & roj kis tau tus mob, siab - cov kav dej siab

Khoom Qib	Txuj	Kev tsim khoom	Qhov Loj	Phab ntsa Thickness	Tus nqi kwv yees (USD / MT)
API 5L IB	API 5L	SSAW / LSAW	20"–80"	6-25 hli	$650–950/MT
API 5L X42	API 5L PSL1 / PSL2	SSAW / LSAW	16"–80"	8-30 mm	$700–1,050/MT
API 5L X52	API 5L PSL2	LSAW	20"–80"	10-35 hli	$750–1,150/MT
API 5L X60	API 5L PSL2	LSAW	24"–80"	12-40 mm	$850–1,300/MT
API 5L X65/X70	API 5L PSL2	LSAW	24"–80"+	15-45 mm	$1,000–1,500/MT

Khoom Qib	Txuj	Kev tsim khoom	Qhov Loj	Tus nqi kwv yees (USD / MT)
TP 304/304L	ASTM A358 / A312	EFW	12"–80"	$2,500–4,000/MT
TP 316/316L	ASTM A 358 Cov khoom lag luam	EFW	12"–80"	$3,200–5,000/MT
321/347H	ASTM A 358 Cov khoom lag luam	EFW	12"–60"	$3,500–5,500/MT
904L	ASTM B673 / B674 ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM B673 / ASTM) တို့	EFW	12"–60"	$6,000–9,000/MT
254 SIB	ASTM A 358 Cov khoom lag luam	EFW	12"–60"	$8,000–12,000/MT
TIAB SA 2205	S32205/S31803	EFW / LSAW	12"–80"	$4,500–7,000/MT
Super Duplex 2507	S32750	EFW	12"–60"	$6,000–9,000/MT
Zeron 100	S32760	EFW	12"–60"	$7,000–10,000/MT

Khoom Qib	Txuj	Kev tsim khoom	Qhov Loj	Tus nqi kwv yees (USD / MT)
Ib 625	ASTM B619 Cov khoom lag luam	EFW	6"–60"	$25,000–40,000/MT
Hastelloy C276	ASTM B619 Cov khoom lag luam	EFW	6"–60"	$30,000–50,000/MT
Incoloy 800/800H/800HT	ASTM B 407 Cov khoom siv	Seamless / Welded	6"–48"	$8,000–15,000/MT
lus 825	ASTM B423 / B705 / ASTM B423 / ASTM B705 / ASTM B423 / ASTM B423 / ASTM B423 / ASTM B705 / ASTM B423 / ASTM B423 / ASTM B423 / ASTM B423 / ASTM B423 / ASTM B423 / ASTM B423 / ASTM B705 / ASTM B423 / ASTM B705 / ASTM B423 / ASTM B423 / ASTM B705 / ASTM B423 / ASTM B705 / ASTM B423 / ASTM B705 / ASTM B423 / ASTM B705 / ASTM B423 / ASTM B423 / B705 / ASTM B705 / ASTM B423 / B705 / ASTM B423 / B705 / ASTM B423 / B705 / 705) Covတို့ဟာ	Seamless / Welded	6"–48"	$10,000–18,000/MT

Lub ntsiab lus rov muaj dua nyob rau hauv cov rooj sib tham hauv pipeline engineering yog SSAW-tiv thaiv-LSAW xaiv kev sib cav rau nruab nrab- cov kab hluav taws xob siab.

Ntau tus kws tshaj lij qhia tias SSAW yeeb nkab feem ntau tsis lees paub los ntawm cov phiaj xwm thoob ntiaj teb (DNV, API 5L PSL2 rau kev pabcuam qaub) txawm tias ua tau raws li qhov yuav tsum tau ua ntawm cov cuab yeej cuab tam. Qhov kev txhawj xeeb tsis yog cov kauv vuam nws tus kheej -- uas ua rau muaj kev ntxhov siab tsawg dua li qhov ntev seam - tab sis T-kos qhov sib tshuam qhov twg coil taub qab welds ntsib cov spiral seam. Cov T-joints no tsim muaj kev ntxhov siab thiab nyuaj rau kev tshuaj xyuas kev ntseeg siab nrog UT automated, ua rau lawv cov ntsiab lus tsis muaj zog rau kev kuaj pom.

Cov khoom siv coj los siv: SSAW tau txais txiaj ntsig zoo rau cov dej thiab qis - kev pabcuam roj cua, tab sis LSAW yog qhov kev nyab xeeb dua rau kev siv siab -siab lossis qaub- kev pabcuam.

API 5L X80 large diameter steel pipe for Oil/gas transmission

Qhov xwm txheej	Kev pom zoo
Dej, P < 2 MPa, OD 600-3000 mm	SSAW (Q235B/Q345B) + 3LPE + cement hauv ob sab phlu
Roj/gas kis tau tus mob, P 2-10 MPa, OD 508-1219 mm	LSAW (API 5L X52-X65 PSL2) + FBE + CP
Gas kab, P> 10 MPa, OD 1016-1422 mm	LSAW (API 5L X70-X80 PSL2) + 3LPE + CP
Qauv piling, OD 508-1420 mm	SSAW (ASTM A252 Gr.2-3), uncoated los yog FBE
Offshore subsea, OD 600-1524 mm	LSAW (API 5L X65 PSL2) + 3LPP + pob zeb hnyav lub tsho
Cheeb Tsam cua sov, 80-120C, OD 300-1200 mm	SSAW (Q345B) + PU rwb thaiv tsev + HDPE tsho
Dej phwj / dej ntws, OD 600-3000 mm	SSAW (Q235B) + cement hauv ob sab phlu + bitumen txheej

Q: Tus nqi sib txawv ntawm LSAW thiab SSAW steel kav yog dab tsi?

A: LSAW kav feem ntau yog 15% mus rau 25% kim dua SSAW kav vim yog cov phaj nyuaj dua - txoj kev tsim thiab kev tswj xyuas nruj dua uas yuav tsum tau muaj rau cov kav ntev ntev.

Q: Thaum twg koj yuav tsum xaiv LSAW es tsis txhob SSAW rau cov roj thiab cov kav dej?

A: Xaiv LSAW thaum ua haujlwm ntawm kev kub ntxhov, thauj cov pa roj qaub (H2S ib puag ncig), lossis xav tau cov phab ntsa nruj -thickness tolerances rau offshore thiab tseem ceeb hla- lub teb chaws kis kab.

Q: Vim li cas cov yeeb nkab steel qee zaum tawg ze ntawm qhov vuam seam tom qab vuam?

A: Tshaj tawm -weld cracking feem ntau yog los ntawm cov cua txias ceev, cov pa roj carbon ntau sib npaug hauv cov phaj tuab, lossis tsis txaus ua ntej - cua sov, uas tawm hauv qhov seem thermal stress thiab caw hydrogen embrittlement.

Q: Dab tsi los tiv thaiv- txheej txheej corrosion yog qhov zoo tshaj plaws rau faus loj txoj kab uas hla steel kav?

A: A 3-Txheej Polyethylene (3PE) txheej txheej sab nraud ua ke nrog cov kua epoxy lossis FBE sab hauv hauv ob sab phlu muaj kev lag luam - tus qauv sib npaug ntawm kev tiv thaiv kev tiv thaiv thiab tshuaj lom neeg mus ntev.

Q: Cov kav hlau loj loj puas tuaj yeem hloov kho rau tsis yog - tus qauv diameters thiab phab ntsa thicknesses?

A: Yog. LSAW thiab EFW kev tsim cov txheej txheem tso cai rau cov phaj hloov pauv tau yooj yim, ua rau kev cai sab nraud thiab cov phab ntsa hnyav hnyav tau yooj yim rau cov haujlwm tshwj xeeb engineering.

HT PIPE (txoj kab uas hla loj steel yeeb nkab manufacturers) yog ib tug zoo -paub stockist thiab exporter. Peb yog cov khoom siv stainless / carbon / npib tsib xee alloy khoom xa khoom nrog 15+ kev xa tawm. Peb tsis tsuas yog muab cov kav dej, phaj, puag ncig, tab sis kuj yog cov yeeb nkab fittings, flanges, thiab lwm yam. Tiv tauj peb kom paub ntau ntxiv thiab cov nqi dawb.

Steel pipes, plates, round bars, pipe fittings, flanges suppliers