Pipe Spool Fabrication|Carbon Steel, Stainless & Duplex

 

Cov yeeb nkab spool yog ib feem ntawm cov kav dej uas tau tsim thiab sib sau ua ke hauv ib lub rhiav ua ntej raug thauj mus rau qhov project site rau qhov kawg installation. Nws feem ntau muaj cov yeeb nkab ncaj, lub luj tshib, tees, reducers, flanges, kaus mom, li qub, thiab lwm yam fittings welded los yog mechanically txuas raws li kev pom zoo piping isometric kos duab.

 

Ib qho kev siv nyiaj xyoo 2026 rau kev tsim cov yeeb nkab spools tuaj yeem yog kwv yees li$3–$8/kg rau carbon steel, $6–$15/kg rau stainless hlau, thiab $10–${5}}/kg rau duplex thiab npib tsib xee- alloy spools, nyob ntawm qhov hnyav ntawm cov khoom, phab ntsa thickness, vuam, NDE, txheej, kuaj thiab cov ntaub ntawv. Cov no yog cov phiaj xwm phiaj xwm nyiaj txiag, tsis yog cov lus hais ruaj khov.

 

 

🔥 Pipe Spool Price & Fabrication Cost 2026

Khoom Qib	Qhov Loj (NPS)	Tus nqi nruab nrab Fabrication ($/Ton)	Tus nqi tseem ceeb tsav tsheb
Cov pa roj carbon steel (ASTM A106 Gr. B)	2" – 24"	$1,800 – $2,600	Labor & standard vuam
Stainless hlau (304/304L, 316/316L)	2" – 24"	$2,800 – $4,200	Purge welding & khoom nqi
Duplex Stainless hlau (2205/2507)	2" – 16"	$4,500 – $6,800	Tswj cov cua sov nkag & nruj NDE
Nickel Alloys (Inconel 625, Hastelloy)	1" – 12"	$7,500 – $12,000+	Tshwj xeeb welding consumable & txawj

Tus nqi ntawm cov yeeb nkab spool fabrication nyob ntawm qhov hnyav ntawm cov khoom siv, cov yeeb nkab txoj kab uas hla, phab ntsa thickness, complexity ntawm isometric drawings, thiab tsis yog -kev ntsuam xyuas kev puas tsuaj (NDE).

Kev Hais Dawb

Ib hom yeeb nkab spool tej zaum yuav muaj:

• Seamless los yog welded yeeb nkab
• 45℃lossis 90℃luj tshib
• Sib npaug lossis txo tees
• Concentric lossis eccentric reducers
• Vuam caj dab flanges
• Slip- ntawm lossis qhov muag tsis pom flanges
• Valves
• Ceg kev sib txuas
• Cov yeeb nkab txhawb nqa
• Cov dej ntws thiab qhov cua
• Cov cuab yeej txuas

 

Rau cov txheej txheem piping, fabrication feem ntau tswj los ntawm ASME B31.3, thaum lub hwj chim kav yuav siv ASME B31.1. Cov txheej txheem vuam thiab cov txheej txheem vuam yog feem ntau tswj raws li ASME Tshooj IX.

 

 

Cov yeeb nkab spool yog ib feem ntawm cov kav dej uas yog prefabricated rau hauv me me nrog flanges thiab fittings. Feem ntau yog tsim los siv ntau hom thawj cov kav dej thiab cov yeeb nkab fittings, lawv suav nrog flanges, luj tshib, tees thiab lwm yam. Lawv feem ntau yog tsim tawm ntawm -site. Raw yeeb nkab yog ua ntej- txiav kom loj nrog rau fittings thiab lwm yam khoom. Lawv yog ib ntus haum ua ke. Qhov no ib nrab ua tiav subassembly yog ces welded ua ke nrog rau lwm spool assemblies.

 

Cov spools yog ua ntej -zoo li tus rau kev sib dhos yooj yim nrog hoists, ntsuas thiab lwm yam cuab yeej los txuas cov khoom. Cov kev sib txuas no tau muab tso rau hauv cov phab ntsa pob zeb ua ntej cov pob zeb tau nchuav. Lub kaw lus yuav tsum tau ua kom zoo ua ntej cov pob zeb tau nchuav vim nws xav tau los tiv thaiv qhov hnyav thiab lub zog ntawm cov qauv.

 

 

Nyob rau tib lub sijhawm, spools feem ntau raug rau corrosion vim raug rau cov ntsiab lus, dej, thiab lwm yam ntuj electrolytes. Kev tiv thaiv tsim nyog thiab kev saib xyuas kev kho kom zoo yuav tsum tau ua thaum tswj xyuas cov kav dej spool. Muaj ob txoj hauv kev los tiv thaiv cov kav xa dej los ntawm cov xwm txheej zoo li no: uas yog, los ntawm kev siv cov txheej txheem tiv thaiv corrosion- tiv taus, xws li txheej txheej epoxy, thaum lub sijhawm tsim khoom. Thiab nrog rau lub raj xa dej npua, kev tshuaj xyuas niaj hnub tau ua los xyuas cov kab nrib pleb thiab corrosion thaum lub raj xa dej khiav.

 

Pipeline spool systems feem ntau yog siv rau hauv cov chaw tsim hluav taws xob thiab cov chaw tsim khoom uas yuav tsum muaj cov kav dej ntom ntom. Cov tshuab no suav nrog kev nqa thiab kev thauj mus los ntawm cov kua thiab roj, thiab cov tsheb thauj mus los no xav tau ntau qhov txuas.

 

Prefabricated Yeeb Nkab Spool Specification

• Qhov Loj: NPS 1/2 "mus rau 48" (DN15 txog DN1200)
• Phab ntsa Thickness / Teem sijhawm: Sch 5S, Sch 10S, STD, XS, XXS, Sch 40, Sch 80, Sch 160
• Kev ntsuas siab: Chav kawm 150, 300, 600, 900, 1500, 2500 / PN10 txog PN420
• Standards: ASME B16.5, ASME B16.47, ASME B31.3, ASME B31.1, AWS D1.1, ISO 9001

 

 

• Txhim kho vuam zoo
• Txo lub sij hawm nruab
• Tus nqi zog qis dua
• Txhim kho kev nyab xeeb
• Tsawg qhov chaw Congestion
• Siab dua qhov tseeb
• Txo cov khoom pov tseg
• Kev tsim kho Modular

 

 

Yuav ua li cas tiv thaiv kev cuam tshuam thiab kev ntxhov siab nyob hauv lub sijhawm hnyav -cov yeeb nkab spool welding?

Hnyav-phab ntsa yeeb nkab spool welding tuaj yeem tsim cov cua kub tseem ceeb, thermal gradients, distortion, thiab residual stress. Kev xyaum zoo fabrication yuav tsum tsom rau kev tswj cov vuam sib lawv liag thiab cua sov input.

Cov kev ntsuas tseem ceeb suav nrog:

• Siv tus tsim nyog WPS/PQRtsim nyog rau cov khoom thiab phab ntsa thickness.
• Tswj preheat thiab interpass kubraws li WPS.
• Optimize tshav kub inputes tsis yog siv cov vuam tam sim no ntau dhau los yog kev mus ncig ceev.
• Siv cov khoom sib npaug sib npaugkom faib cov thermal stresses nyob ib ncig ntawm cov yeeb nkab ncig.
• Txo qhov tsis tsim nyog weld hlathaum tuav qhov yuav tsum tau weld geometry.
• Siv kom haum- nce thiab tswj cov hauv paus qhov khoobua ntej vuam.
• Siv cov kev txhawb nqa ib ntus lossis rov qab muaj zogthaum tso cai los ntawm tus txheej txheem fabrication.
• Tso cai tswj kom txiases tsis txhob ua kom txias sai heev ntawm - phab ntsa weld.
• Saib xyuas qhov hloov pauvnruab nrab ntawm vuam theem.
• Qhov twg xav tau los ntawm cov khoom siv thiab cov cai siv, uapost-weld kev kho cua sov (PWHT)txhawm rau txo cov kev ntxhov siab uas seem thiab ua tau raws li cov cuab yeej cuab tam - yuav tsum muaj.

 

 

"NDT yog dab tsi yuav tsum tau rau steel yeeb nkab spool vuam?"

VT - Visual Testing:nquag ua ntawm welds.

RT - Kev ntsuas hluav taws xob:siv los txheeb xyuas qhov tsis sib xws hauv cov vuam.

UT - Kev Ntsuas Ultrasonic:feem ntau yog siv rau kev kuaj ntsuas, tshwj xeeb tshaj yog nyob rau tuab- phab ntsa welds.

MT - Sib Nqus Particle Test:muaj feem xyuam rau cov ntaub ntawv ferromagnetic rau kev kuaj xyuas qhov chaw thiab ze rau - deg defects.

PT - Liquid Penetrant Testing:Feem ntau siv rau stainless hlau, npib tsib xee alloys, thiab lwm yam uas tsis yog - cov khoom siv hlau nplaum los xyuas qhov chaw - tawg tsis xws luag.

PMI - Kev txheeb xyuas cov khoom zoo:feem ntau xav tau rau alloy thiab stainless-steel spools los xyuas cov ntaub ntawv qib.

 

Cov qauv twg tswj hwm prefabricated steel yeeb nkab spools (ASME B31.3 vs ASME B31.1)?

• ASME B31.3 - Txheej Txheem Pipingyog dav siv rau cov nroj tsuag tshuaj, refineries, petrochemical chaw, tshuaj nroj tsuag, thiab lwm yam txheej txheem -kev lag luam piping systems.
• ASME B31.1 - Fais Fab Pipingfeem ntau yog siv rau lub zog- cov chaw tsim khoom, suav nrog boiler- cov kav dej sab nraud thiab qee qhov nkev, condensate, thiab cov kav dej fais fab.

 

 

Pipe spool hnyav yog ib txwm suav los ntawm kev ntxiv qhov hnyav ntawm cov yeeb nkab, fittings, flanges, li qub, thiab lwm yam khoom, ntxiv rau qhov kwv yees qhov vuam hlau uas siv tau.

 

Rau cov yeeb nkab nws tus kheej, kev suav yooj yim yog:

Cov yeeb nkab hnyav=theoretical yeeb nkab hnyav ib 'meter' × yeeb nkab ntev

 

Tag nrho qhov hnyav fabrication tuaj yeem kwv yees li:

Tag nrho spool hnyav=Yeeb Nkab + Fittings + Flanges + Valves + Lwm yam khoom + Weld hlau

 

Fabrication txiv neej-teev nyob ntawm txoj kab uas hla, phab ntsa thickness, cov khoom siv, tus naj npawb ntawm welds, vuam txheej txheem, NDT yuav tsum tau, kev kho cua sov, haum- nce complexity, thiab cov khoom siv hauv khw.

 

 

Stainless hlau Weld Contamination

Ib qho teeb meem tshwm sim yog kev sib kis ntawm cov hlau tsis huv thaum tsim khoom.

Cov pa roj carbon- cov cuab yeej hlau, sib tsoo cov plua plav lossis kev tuav tsis raug tuaj yeem ua rau cov hlau tsis huv mus rau qhov chaw stainless.

Qhov tshwm sim yuav yog nto staining lossis localized corrosion.

Dedicated stainless fabrication cov cuab yeej thiab cov txheej txheem tu kom zoo yog li tseem ceeb.

 

Pipe Spool Dimensional yuam kev

Lub spool tuaj yeem dhau qhov kev kuaj xyuas vuam thiab tseem ua tsis tiav thaum lub sijhawm teeb tsa.

Tej yam ua rau muaj xws li:

• Kev sib hloov flange tsis raug
• Lub ntsej muag tsis raug-rau- ntsej muag qhov loj
• ceg orientation yuam kev
• Lub luj tshib tsis raug
• Accumulated dimensional kam rau ua

Qhov no yog vim li cas kev soj ntsuam qhov ntev yuav tsum tau kho raws li kev soj ntsuam vuam.

 

NDE Rejection

High NDE tsis lees txais tus nqi tuaj yeem nce qhov project nqi ntau heev.

Tej yam ua rau muaj xws li:

• Tsis muaj fusion
• Porosity
• Slag suav nrog
• Undercut
• Kev tawg
• Kev nkag mus hauv paus tsis raug

Lub khw fabrication muab ib puag ncig tswj ntau dua rau vuam, tshuaj xyuas thiab kho dua li ntau qhov chaw.

 

 

Q: Dab tsi yog lub raj xa dej?

A: Lub raj xa dej yog cov kav dej ua ntej ua los ntawm cov yeeb nkab, fittings, flanges thiab lwm yam khoom. Nws yog feem ntau welded thiab tshuaj xyuas nyob rau hauv ib tug rhiav ua ntej muab ntsia rau ntawm qhov project site.

 

Q: Ntau npaum li cas cov yeeb nkab spool nqi hauv xyoo 2026?

A: Cov nqi siv nyiaj txiag fabricated spool tuaj yeem nyob ntawm txog$ 3- $ 8 / kg rau carbon steel, $ 6- $ 15 / kg rau stainless hlau, thiab$10–${1}}/kg rau duplex thiab npib tsib xee alloys. Tus nqi tiag tiag nyob ntawm cov duab kos, khoom siv, suav suav, NDE, kuaj, txheej thiab cov ntaub ntawv.

 

Q: Cov ntaub ntawv dab tsi uas nquag siv rau siab -corrosion yeeb nkab spools?

A: Austenitic stainless hlau (316L), duplex stainless hlau (2205), thiab npib tsib xee-raws li superalloys (Inconel 625) yog dav siv rau corrosive tshuaj thiab marine ib puag ncig.

 

Q: Dab tsi yog qhov txawv ntawm cov yeeb nkab spool thiab yeeb nkab haum?

A: Cov yeeb nkab haum yog ib qho kev sib txuas ntawm cov kav dej, hos cov yeeb nkab spool yog cov khoom sib dhos uas muaj ntau yam khoom siv thiab cov welds.

• Cov yeeb nkab spool yog ib qho prefabricated seem ntawm cov kav dej uas tsim los ntawm ib lossis ntau cov yeeb nkab, feem ntau suav nrog cov yeeb nkab ncaj, lub luj tshib, tees, reducers, flanges, thiab welded pob qij txha. Nws yog fabricated raws li daim duab isometric thiab xa mus rau qhov chaw tsim kho rau kev teeb tsa.
• Cov yeeb nkab haum, los ntawm qhov sib txawv, yog ib qho khoom siv los hloov cov kev taw qhia, qhov loj me, lossis kev sib txuas ntawm cov kav dej. Cov fittings muaj xws li luj tshib, tees, reducers, kaus mom, thiab crosses.

 

Q: Dab tsi yog tus qauv siv rau cov yeeb nkab spool fabrication?

A: Cov txheej txheem piping feem ntau yog tsim thiab tsim raws liASME B31.3. Cov kav dej fais fab tuaj yeem siv tauASME B31.1, thaum vuam kev tsim nyog yog feem ntau tswj los ntawmASME Section IX. Cov kev qhia tshwj xeeb ntawm qhov project tuaj yeem tsim cov kev xav tau ntxiv.

 

Q: Dab tsi yog NDE yuav tsum tau rau cov yeeb nkab spools?

A: Cov kev xav tau nyob ntawm cov kav dej thiab qhov project specification. Cov txheej txheem muaj xws li VT, RT, UT, PT thiab MT. Cov kev pabcuam tseem ceeb yuav xav tau kev kuaj xyuas ntau dua.

 

Q: Vim li cas cov yeeb nkab spool poob tom qab vuam?

A: Tej yam ua tau muaj xws li cov vuam tsis raug, tsis zoo - nce, kev sib kis, cov hlau tsis zoo, cov khoom siv hluav taws xob ntau dhau, tsis muaj fusion, porosity, tawg lossis xaiv cov khoom siv tsis raug. Tshawb xyuas WPS/PQR, cov ntaub ntawv txuas thiab NDE cov txiaj ntsig ua ntej txiav txim siab qhov tsis ua haujlwm.

 

Cov ntaub ntawv dab tsi yog muab los ntawm cov yeeb nkab uas tsim tawm?

Cov ntaub ntawv ib txwm muaj xws li:

• MTC (EN 10204 3.1)
• Vuam txheej txheem tsim nyog (PQR)
• Welder qualification records
• NDT reports
• Hydrotest daim ntawv pov thawj
• Dimensional soj ntsuam daim ntawv qhia