Tsis muaj ib qho raug txiav tawm, tab sis hauv kev xyaum feem ntau ntawm kev lag luam kho cov yeeb nkab seamless ntawm lossis saum toj no219.1 hli (NPS 8 ")raws li txoj kab uas hla loj. Qee cov catalogs siv 323.9 hli (NPS 12 ") raws li qhov pib, thiab ob peb txhais dab tsi tshaj 76 mm loj. Yog vim li cas tus lej tseem ceeb yog qhov ua tau: saum 8 "kev xaiv ntawm txoj kev tsim khoom pib hloov, thiab siab dua 16" (406.4 hli) cov kev xaiv zeb ua tiag tiag txwv.
Txheem kub dov tuaj yeem xa cov yeeb nkab seamless mus txog ib ncig610 hli (24 ")sab nraud txoj kab uas hla. Ntxiv mus, seamless yeeb nkab feem ntau yog tsim los ntawmkub expansion- noj me me kub- dov niam cov yeeb nkab thiab nthuav nws mus rau qhov xav tau OD. Kub- nthuav dav seamless yeeb nkab feem ntau muaj txog li 1219 hli (48 "), thiab qee cov neeg tsim khoom mus ntxiv rau kev thov.
Hom Loj Loj
| NPS | DN | Sab nraud txoj kab uas hla (mm) | Common Phab Ntsa Thickness (mm) |
|---|---|---|---|
| 8" | DN200 | 219.1 | 6–25 |
| 10" | DN250 | 273.0 | 6–28 |
| 12" | DN300 Nws | 323.9 | 6–32 |
| 14" | DN350 ua | 355.6 | 8–36 |
| 16" | DN400 | 406.4 | 8–40 |
| 18" | DN450 | 457.0 | 8–45 |
| 20" | DN500 | 508.0 | 10–50 |
| 22" | DN550 | 559.0 | 10–50 |
| 24" | DN 600 Nws | 610.0 | 10–60 |
Kub- nthuav dav seamless yeeb nkab txuas qhov no mus rau 1219 hli (48 ") OD, nrog phab ntsa tuab feem ntau 6-80 hli thiab tuab muaj nyob rau ntawm kev txiav txim tshwj xeeb.
Standard lengths yog 6 m thiab 12 m tsau, los yog ib leeg / ob chav random lengths (5.8 m / 11.8 m). Rau txoj kab uas hla loj heev, feem ntau cov neeg xa khoom xa tuaj hauv cov khoom xoob ntau dua li cov pob, tsuas yog vim tias 48-nti yeeb nkab tsis haum ib pob khoom.
Loj npaum li cas txoj kab uas hla Seamless yeeb nkab yog ua
Peb txoj kev tsim khoom tseem ceeb rau cov neeg yuav khoom, vim tias lawv tsav tus nqi, qhov zoo, thiab qhov ua tau ntawm lub cev.
1. Kub-Rolled (Direct Rolling)
Ib qho khoom siv puag ncig yog rhuab mus rau lub xeev yas (kwv yees li 1200 degree), pierced rau hauv lub plhaub hollow, ces dov los ntawm mandrel zeb kom ncav cuag lub hom phiaj txoj kab uas hla thiab phab ntsa thickness. Vim hais tias cov yeeb nkab yog tsim nyob rau hauv ib tug nruam kub txheej txheem, cov qauv yog uniform thiab cov phab ntsa thickness nyob twj ywm zoo ib yam. Qhov no yog qhov zoo tshaj plaws - txoj hauv kev zoo rau cov kab loj loj, thiab tseem kim tshaj - kub kub- dov seamless yeeb nkab yuav tsum tau khiav ntawm qhov loj tshaj seamless mills, uas muaj tsawg.
2. Kub-Nthuav dav
Kev nthuav dav kub pib nrog qhov kub me me - dov seamless niam yeeb nkab, ua kom sov nrog induction, thiab thawb nws los ntawm lub conical mandrel kom loj dua txoj kab uas hla. Phab ntsa thins me ntsis raws li txoj kab uas hla loj hlob, thiab qhov ntev hloov ib yam nkaus, yog li qhov kawg phab ntsa thickness tsis raws nraim niam yeeb nkab. Qhov txiaj ntsig loj yog tus nqi: nws cia cov mills tsim loj - txoj kab uas hla seamless yeeb nkab tsis muaj cov kab dov loj, thiab nws ua haujlwm tsis yog - tus qauv diameters yooj yim. Kev ua tau zoo yog qhov zoo - cov txheej txheem ua kom cov qauv seamless - tab sis nws tsis tuaj yeem sib tw ncaj nraim rau phab ntsa uniformity.
3. Txias-Drawn / Cold-Rolled
Kev kos duab txias feem ntau yog siv rau cov kab me me, cov phab ntsa nyias, thiab nruj kam rau ua. Nws tsis tshua muaj tshwm sim nyob rau hauv "loj txoj kab uas hla" sib tham, tab sis koj yuav pom nws hais nyob rau hauv catalogs, yog li ntawd nws yog tsim nyog paub hais tias nws yog lub precision txoj kev, tsis yog qhov loj - txoj kab uas hla.
Kub-Rolled vs. Kub-Expanded
| Feature | Kub-Rolled Seamless | Kub -Ntawm Seamless |
|---|---|---|
| Qhov siab tshaj OD | ≈ 610 hli (24 ") | mus txog 1219 mm (48 ") + |
| Phab ntsa uniformity | Zoo dua | Zoo, me ntsis tsis sib xws |
| Tsis yog - qhov loj me | txwv | Yooj yim tsim |
| Nqi | Siab dua | qis |
| Zoo tshaj plaws | High -cov haujlwm tshwj xeeb | Loj diameters ntawm pob nyiaj siv |
Yog tias koj qhov project khiav ntawm qhov siab thiab qhov tshwj xeeb yog qhov tseem ceeb, kub - dov yog qhov kev hu zoo dua. Yog tias koj xav tau OD loj rau kev tsim qauv lossis qis - lub luag haujlwm siab thiab tus nqi tseem ceeb, kub - nthuav dav feem ntau yog qhov kev xaiv ua tau. Ob leeg khaws cov qauv seamless - tsis muaj vuam, tsis muaj vuam seam, tsis muaj teeb meem tshuaj xyuas vuam.
Cov ntaub ntawv thiab cov qauv
Cov khoom xaiv ua raws li tus qauv uas koj qhov project tsim los. Cov lus hauv qab no npog cov qib cov neeg yuav khoom tiag tiag nug rau ntawm - txoj kab uas hla seamless yeeb nkab.
| Txuj | Hom Qib | Kev siv loj |
|---|---|---|
| GB/T 8163 | 10#, 20# | Kev thauj mus los (dej, roj, roj) |
| GB/T 8162 | Q235B, Q345B, Q355B, 20#, 45# | Kev siv tus qauv, machinery |
| ASTM A106 / ASME SA106 | Gr. B, Gr. C | High -kub carbon steel kev pabcuam |
| ASTM A53 | Gr. A, Gr. B | General mechanical thiab siab siv |
| API 5L | Gr. B, X42, X52,X60, X65, X70 (PSL1/PSL2) | Roj thiab roj kab yeeb nkab |
| ASTM A333 Cov khoom lag luam | Gr . 6 | Tsawg-kev pabcuam kub |
| ASTM A335 Cov Lus Qhia Tshwj Xeeb | P11, P22, P91 | Siab -siab, siab -kub alloy kev pabcuam |
| GB/T 5310 | 20G, 15CrMoG, 12Cr1MoVG | Boiler thiab siab - kev pabcuam siab |
| wb 9948 | 20 #, 12CrMo, 15CrMo | Petroleum cracking service |
| EN 10210 / EN 10216 | S235JR, S355JR, S355J2H | European structural / siab hollow seem |
Qee cov ntawv xaiv los ntawm peb RFQs:
Cov pa roj carbon steel ntawm qhov kub thiab txias li qub -A106 gr. B, A53 Gr. B, API 5L Gr. B, los yog GB 8163 20#npog feem ntau ntawm cov haujlwm.
Lub zog muaj zog ntau dua rau qhov ntev - cov kav dej nyob deb -API 5L X52/X60/X65 PSL2.
Kub kub (sub, boilers, refineries) - alloy qib xws liA335 P22/P91los yogGB 5310 15CrMoG.
Tsawg kub (cryogenic, arctic) -A333 Gr . 6.
Kev ua haujlwm huv huv -GB/T 8162 Q355Blos yogEN 10210 S355J2Hfeem ntau yog tus nqi ntau tshaj -zoo.
Qhov twg loj txoj kab uas hla Seamless yeeb nkab yog siv
Roj thiab roj- sib sau cov kab, cov kav xa dej, thiab OCTG (casing thiab tubing). Cov qauv seamless txhais tau tias tsis muaj vuam seam kom txhawj txog nyob rau hauv lub voj voog siab.
Petrochemical thiab chemical nroj tsuag- siab- cov txheej txheem siab piping, rauv tub thiab cua sov-exchanger headers, feem ntau hauv cov hlau alloy.
Kev tsim hluav taws xob- boiler raj, lub ntsiab chav thiab feedwater piping; supercritical units thawb nyuaj rau creep zog thiab huv si.
Dej infrastructure- cov khoom siv tseem ceeb thiab cov kav dej, qhov loj dua txoj kab uas hla txhais tau tias ntau dua ntws nrog tsawg dua kev sib txuas.
Cov qauv thiab marine- choj piling, offshore platform ob txhais ceg, piling rau ports thiab chaw ntau pob ru tsev.
Tshuab- hydraulic lub tog raj kheej chim, accumulator plhaub, thiab rotating khoom lub cev uas xav tau ib tug seamless raj raws li ib tug pib dawb paug.
Kev Tswj Xyuas Zoo thiab Thib Peb -Kev Tshawb Fawb
Cov neeg siv khoom puas tuaj yeem npaj qhov thib peb -kev tshuaj xyuas tog?
Yog lawm. Peb txhawb nqa tag nrho- txheej txheem thib peb- kev soj ntsuam tog los ntawm SGS, BV, TUV, Intertek, thiab lwm yam. Kev tshuaj xyuas ib txwm suav nrog cov ntsiab lus hauv qab no, thiab peb xa tsuas yog tom qab daim ntawv tshaj tawm raug kos npe tawm:
Kev tshuaj xyuas cov txheej txheem ntau lawm, suav nrog cov pov thawj ntawm kev sim hydrostatic qhov twg thov
Dimensional checks - OD, phab ntsa thickness, ntev, ncaj, thiab kawg bevel kaum (feem ntau 30℃± 5 degree)
Surface thiab ntim khoom
Kev tshuaj xyuas zaum kawg ua ntej xa khoom xa tuaj, nrog cov duab thiab cov ntaub ntawv tshaj tawm
Routine zeb kuaj ntawm seamless yeeb nkab suav nrogKev ntsuas hydrostatic(txhua lub yeeb nkab, raws li cov qauv feem ntau),ultrasonic lossis eddy- kev tshuaj xyuas tam sim norau sab hauv tsis xws luag, tshuaj muaj pes tsawg leeg tsom xam, thiab tensile/impact kuaj raws li tus qauv yuav tsum tau. Rau cov qib alloy, cov neeg yuav khoom feem ntau nug txogPMI (Positive Material Identification)ntawm cov qauv random kom paub meej tias qib ua ntej thauj khoom. Cov ntaub ntawv pov thawj xeem yog muab rau ibEN 10204 Hom 3.1, nrog3.2muaj thaum muaj tus thib peb - tus neeg soj ntsuam koom nrog.
Xav Tau Cov Yeeb Nkab Loj Loj Seamless? Tham nrog peb
GNEE Yeeb Nkab muab cov khoom kub- dov thiab kub- nthuav dav seamless yeeb nkab los ntawm 8 "mus rau 48", qib carbon thiab alloy, nrog rau daim ntawv pov thawj zeb tag nrho thiab thib peb - tog tshuaj xyuas ntawm kev thov. Qhia rau peb koj qhov loj me, qib, thiab ntau thiab peb yuav paub meej tias muaj thiab lub sijhawm xa khoom.
Qhov kev xav tsawg dua peb yuav tsum ua, qhov tseeb dua koj cov lus. Thov suav nrog:
Sab nraud txoj kab uas hla (los yog NPS) thiab phab ntsa thickness / sij hawm
Qib thiab tus qauv (xws li API 5L X60 PSL2, A106 Gr. B, GB/T 8163 20#)
Ntev thiab ntau (hauv meters lossis tons)
Xaus kev ua tiav (dawb, beveled, grooved) thiab kev kho deg (anti- xeb roj, xim dub, 3PE / FBE)
Cov cai yuav tsum muaj daim ntawv pov thawj (3.1, 3.2, thib peb-kev soj ntsuam tog)
Qhov chaw nres nkoj qhov chaw thiab txhua lub sijhawm xa khoom
Xa cov lus nug los ntawm daim foos lossis email rau peb ncaj qha, thiab peb yuav rov qab los nrog kev lees paub kev lag luam thiab cov lus hais ruaj khov.
FAQ
Dab tsi yog qhov loj tshaj plaws txoj kab uas hla seamless steel yeeb nkab muaj?
Standard kub- dov seamless yeeb nkab feem ntau tops tawm ib ncig ntawm 610 hli (24 ") OD. Kub- nthuav seamless yeeb nkab txuas qhov no mus rau 1219 hli (48") thiab tshaj ntawm kev txiav txim tshwj xeeb. Tsis tas li ntawd, welded yeeb nkab (LSAW / SSAW) dhau los ua qhov kev xaiv tsuas yog siv tau, uas yog vim li cas cov khoom siv seamless thiab welded sib tshooj nyob rau hauv ntau yam no.
Puas yog kub- nthuav dav seamless yeeb nkab muaj zog li kub- dov?
Kub-cov yeeb nkab nthuav dav khaws cov qauv seamless thiab ua tau raws li cov kev xav tau ntawm cov neeg kho tshuab tib yam ntawm tus qauv nws tau ua rau (A106 Gr. B, API 5L, thiab lwm yam). Phab ntsa tsis sib xws thiab qhov chaw saum npoo yog feem ntau zoo dua ntawm cov yeeb nkab ncaj nraim - dov. Rau siab - kev pabcuam tseem ceeb, feem ntau engineers nyiam kub- dov; rau cov qauv thiab dav dav - lub luag haujlwm loj diameters, kub- nthuav dav yog qhov pov thawj, nqi{12}} siv tau zoo.
Yuav ua li cas tolerances siv rau txoj kab uas hla loj seamless yeeb nkab?
Rau Asmeskas -tus qauv yeeb nkab, OD kam rau ua feem ntau yog ± 1% thiab phab ntsa thickness kam rau rho tawm 12.5% ib ASTM A530, nrog rau lub sij hawm - txhais nominal thickness tswj. Kev zam rau GB thiab EN cov qauv sib txawv me ntsis. Nco ntsoov lees paub lub hauv paus kev zam txim thaum koj thov rau ib qho kev tsocai, thiab hais nws ntawm PO yog tias qhov project muaj cov cai tshwj xeeb.
Koj puas tuaj yeem muab EN 10204 3.1 / 3.2 daim ntawv pov thawj?
Yog lawm. Txhua qhov kev txiav txim ships nrog 3.1 cov ntaub ntawv xeem daim ntawv pov thawj. Daim ntawv pov thawj 3.2 - countersigned los ntawm ib tug thib peb - tog neeg soj ntsuam - yog muaj thaum koj teem ib tug ywj siab soj ntsuam, thiab feem ntau yuav tsum tau los ntawm EPC cov neeg cog lus nyob rau hauv Middle East, Africa, thiab Southeast Asia.
Dab tsi kawg finishes muaj?
Plain xaus, beveled xaus (30℃± 5℃ib ASME B16.25), thiab threaded kawg yog tag nrho cov muaj. Rau grooved - hom kev sib txuas, Victaulic grooves tuaj yeem ua tiav raws li kev thov. Qhia qhov kawg ua tiav hauv koj qhov kev nug kom peb hais txog kev ua haujlwm zoo.
Qhov kev txiav txim yam tsawg kawg nkaus yog dab tsi thiab lub sij hawm coj mus kuaj?
MOQ nyob ntawm qhov loj me - tus qauv loj xws li 8 "–16" tuaj yeem pib los ntawm ib qho kev thauj khoom thauj, thaum tsis yog - tus qauv lossis loj - txoj kab uas hla zeb xaj feem ntau xav tau qhov tsawg kawg nkaus. Cov khoom xa tuaj hauv 7-15 hnub; zeb ntau lawm rau qhov tshwj xeeb qhov ntau thiab tsawg feem ntau khiav 20-35 hnub nyob ntawm seb muaj pes tsawg thiab tus qauv. Xa koj qhov loj me, qib, thiab ntau thiab peb yuav lees paub ob qho tib si.
Rau cov diameters loj heev, vim li cas ho tsis siv cov yeeb nkab welded?
Muaj lus nug. Welded (LSAW/SSAW) yeeb nkab feem ntau pheej yig dua ntawm cov kab loj loj, tab sis tsis muaj seamless tsis muaj vuam seam - uas txhais tau tias tsis muaj kev soj ntsuam seam, tsis muaj weld-kev pheej hmoo ua tsis tiav nyob rau hauv lub voj voog siab, thiab tus cwj pwm zoo dua hauv qaub lossis qaug zog- kev pabcuam tseem ceeb. Yog hais tias qhov project code tso cai rau welded yeeb nkab, nws feem ntau yog kev xaiv nyiaj txiag; yog hais tias tus spec mandates seamless (feem ntau nyob rau hauv siab - siab thiab code- tsav ua hauj lwm), kub- nthuav seamless yog txoj kev kom tau ib tug loj OD yam tsis muaj seam.
Kuv puas tuaj yeem tau txais ib qho qauv rau kev kuaj cov khoom ua ntej ntau lawm?
Rau feem ntau cov qib carbon steel, peb tuaj yeem muab cov qauv me me lossis ib qho txiav rau kev kuaj thiab kev pom zoo. Rau zeb- qhov ntau thiab tsawg peb pom zoo ua ntej- qauv tsim los yog siv rau qhov kev txiav txim tiav zoo sib xws. Txawm li cas los xij, lees paub cov khoom siv thiab cov qauv ua ntej - tus nqi qauv thiab qhov muaj nyob ntawm qib thiab qhov loj me.
