GB / T 3091 Kauv Submerged Arc Welded Steel Yeeb Nkab (SSAW)
Lub ntsiab lus tseem ceeb
GB/T 3091yog Suav lub teb chaws tus qauv npe"Welded steel kav rau tsis tshua muaj siab ua kua xa khoom". Cov qauv no qhia meej meej suav nrogkauv submerged arc welded (SSAW / SAWH)cov kav dej raws li ib qho ntawm cov kev tso cai tsim khoom rau qis - cov ntawv thov kev xa cov kua dej .
Cov ntsiab lus tseem ceeb
| Yam ntxwv | Kev piav qhia |
|---|---|
| Standard Number | GB/T 3091 |
| Tseeb Version | GB/T 3091-2025(Nyob rau lub Kaum Hlis 1, 2025) |
| Tam sim no Version | GB / T 3091-2015 (txog Lub Kaum Hli 2025) |
| Full Title | "Welded steel kav rau cov kua dej tsis tshua muaj siab" / "低压流体输送用焊接钢管" |
| Scope | Dej, huab cua, chav, thiab roj tsawg - kis tau tus mob |
| Cov yeeb nkab hom npog | HFW (ERW), SAWL (LSAW), thiabSAWH (SSAW - spiral submerged arc welded) |
| Daim ntawv thov | Tsawg-cov kua xa tawm siab (feem ntau ≤1.6 MPa) |
Steel Qib (Cov Khoom)
| Qib | Yield zog (min) | Tensile zog (min) | Elongation% | Kev siv yam |
|---|---|---|---|---|
| Q195 | 195 MPa ua | 315 MPa rau | 20 | Lub teeb lub luag haujlwm, tsis tshua muaj siab |
| Q215 | 215 MPa | 335 MPa rau | 20 | Lub hom phiaj dav dav |
| Q235B | 235 MPa rau | 370 MPa rau | 20 | Feem ntau - kev pabcuam dav dav |
| Q275 | 275 MPa rau | 410 MPa | 18 | Cov kev xav tau siab dua |
| Q355B | 355 MPa rau | 470 MPa rau | 18 | Siab - cov ntawv thov muaj zog |
*Faj seeb: Q355B yog ib qho tshiab ntxiv hauv GB/T 3091-2025 .*
SSAW Manufacturing txheej txheem
Kauv submerged arc welded kav raws li GB / T 3091 yog tsim los siv:
Raw Khoom: Kub-rolled steel kauj (qib Q195, Q215, Q235, Q275, Q355)
tsim: Hlau sawb txuas txuas txuas txuas ntxiv - tsim nyob rau hauv chav tsev kub
Vuam: Ob npaug -sab tsis siv neeg submerged arc vuam (sab hauv thiab sab nraud)
NDT: 100% ultrasonic lossis X-ray tshuaj xyuas ntawm vuam seam
Hydrostatic Test: Txhua lub yeeb nkab tau kuaj ib tus zuj zus
Ua tiav: Xaus beveling, txheej raws li xav tau
Dimensional Tolerances (SAWH)
| Parameter | Qhov Loj | Ua siab ntev |
|---|---|---|
| Sab nraud txoj kab uas hla (D ≤ 48.3mm) | - | ± 0.5 hli |
| Sab nraud txoj kab uas hla (48.3mm | - | ± 1% D |
| Sab nraud txoj kab uas hla (D> 273.1mm) | - | ± 0.75% D |
| Phab ntsa Thickness | - | ± 10% ntawm nominal |
| Ntev | - | +50mm / -0mm |
Hom Loj Loj rau SSAW:219mm txog 4064mm (8 "mus rau 160") OD.
Cov ntawv thov tseem ceeb
| Daim ntawv thov | Kev piav qhia |
|---|---|
| Kev Siv Dej | Kev xa dej hauv nroog thiab kev lag luam |
| Natural Gas | Tsawg- cov pa hluav taws xob faib hluav taws xob |
| Chav Kab | Tsawg- cua kub cua sov |
| Compressed Cua | Industrial cua tshuab |
| Tiv thaiv hluav taws | Hluav taws kub dej mains (galvanized) |
| Kev siv tus qauv | Piling, scaffolding, txhawb nqa |
* Ceeb toom: Galvanized kav raws li GB / T 3091 feem ntau hu ua "dawb yeeb nkab".*
GB/T 3091 vs. Lwm tus qauv
| Txuj | Daim ntawv thov | Kev ntsuas siab |
|---|---|---|
| GB/T 3091 | Tsawg- cov kua xa tawm siab (dej, huab cua, chav, roj) | ≤1.6 MPa raug |
| GB/T 9711 | Petroleum thiab natural gas pipelines | Nruab nrab mus rau siab |
| GB/T 14291 | Kev pab cuam hauv dej (slurry, dewatering) | Tsawg siab, kev pabcuam abrasive |
| SY/T 5037 | General low -pressure fluid pipelines | Tsawg siab |
Hloov tshiab Version
| Version | xwm txheej | Kev hloov pauv tseem ceeb |
|---|---|---|
| GB/T 3091-2025 | Pib txij lub Kaum Hlis 1, 2025 | Ntxiv Q355B qib, ncua sij hawm ntsuas hydrostatic, hloov kho qhov siab ntev |
| GB/T 3091-2015 | Tam sim no (txog Lub Kaum Hli 2025) | Hloov 2008 version |
| GB/T 3091-2008 | Superseded | Hloov los ntawm 2015 version |
| GB/T 3091-2001 | Tsis siv lawm | Keeb kwm version |
Txheej txheej xaiv
GB / T 3091 cov kav dej tuaj yeem muab nrog:
| Txheej hom | Daim ntawv thov |
|---|---|
| Dub (dawb) | Standard zeb tiav |
| Galvanized (Kub-dip) | Kev tiv thaiv corrosion rau dej / roj kab |
| Varnish / Anti- xeb roj | Kev tiv thaiv ib ntus |
| FBE / 3 LPE | faus pipelines (los ntawm kev pom zoo) |
Qhov tseem ceeb ntawm SSAW nyob rau hauv GB / T 3091
| Qhov zoo | Kev piav qhia |
|---|---|
| Tus nqi -Cov | Kev lag luam ntau dua li LSAW lossis seamless rau cov kab loj loj |
| Loj Loj Muaj peev xwm | Tsim cov kav dej mus txog 160 "OD |
| Ntev ntev | Txog li 18m tus qauv ntev txo cov pob qij txha |
| Ntau yam | Haum rau dej, roj, chav, thiab kev siv cov txheej txheem |
| Galvanizing kev xaiv | Kub-dip galvanized muaj rau kev tiv thaiv corrosion |
| Muaj dav | Common stock khoom los ntawm Suav manufacturers |
Kev txiav txim siab tseem ceeb
1. Kev txwv siab
GB / T 3091 yog tshwj xeeb raulow-kwv dej kis tau tus mob(feem ntau ≤1.6 MPa). Rau siab dua, qhiaGB/T 9711los yogAPI 5L.
2. SSAW vs. ERW rau GB/T 3091
SSAW (kauv): Preferred for larger diameters (>219 hli / 8 ")
ERW (Raws ncaj seam): Nyiam rau cov kab me me (≤ 219mm / 8 ")
3. Txheem Version
GB/T 3091-2025yuav pib lub Kaum Hlis 1, 2025
Txog thaum ntawd,GB/T 3091-2015yog tam sim no siv tau version
4. Q355B Qib (Tshiab hauv 2025 version)
2025 version ntxiv Q355B qis- alloy steel qib nrog:
Yield zog: ≥355 MPa (rau thickness ≤16mm)
Tensile zog: 470-630 MPa
5. Weld Seam NDT
100% ultrasonic los yog X-ray tshuaj xyuas ntawm kauv weld seam yog tus qauv
Hydrostatic xeem yuav tsum tau rau txhua lub yeeb nkab
Cov ntsiab lus
GB / T 3091 kauv submerged arc welded steel yeeb nkabyog tus qauv kev xaiv rau loj - txoj kab uas hla, qis- cov ntawv thov kev sib kis ntawm cov kua hauv Suav teb. Nws npog cov kav dej, cua, chav, thiab cov kav dej, nrog rau cov kav dej galvanized rau kev tiv thaiv corrosion.
Cov yam ntxwv tseem ceeb:
NpogKauv submerged arc welded (SAWH)cov kav dej qhia meej
Muaj feem xyuam raulow-kwv dej kis tau tus mob(dej, cua, ncu, gas)
Cov qib muaj:Q195, Q215, Q235B, Q275, Q355B(Q355B tshiab hauv 2025)
SSAW txheej txheem haum rauloj diameters(219mm txog 4064mm / 8 "mus rau 160")
100% NDT ntawm weld seam thiab hydrostatic kuaj yuav tsum tau
Galvanized xaiv muaj rau kev tiv thaiv corrosion
Tus qauv tam sim no:GB/T 3091-2015; Tus qauv tshiab:GB/T 3091-2025(Lub Kaum Hli 1, 2025)
Thaum ordering, qhia:GB/T 3091, Qib (piv txwv li, Q235B), SSAW (kauv submerged arc welded), Loj (OD x WT), Ntev, Kawg Finish (plain / beveled), Txheej (dub / galvanized), thiab Standard Version (2015 lossis 2025).
