GB/T 14291 Kauv Submerged Arc Welded Steel Yeeb Nkab (SSAW)
Lub ntsiab lus tseem ceeb
GB/T 14291yog Suav teb chaws tus qauv rau"Welded steel kav rau kuv cov kua dej"(full title: "矿粉矿浆输送用电焊钢管" / "矿用流体输送焊接钢管"). Cov qauv no tshwj xeeb yog siv cov kav hlau welded siv hauv kev siv tsuas rau kev thauj cov kua dej xws li dej, slurry, cua, thiab roj.
Tus qauv siv raukauv submerged arc welded (SSAW) kav, kuj hu uahelical submerged arc welded (HSAW) kav, uas yog tsim los ntawm kauv txoj kev thiab ob -sided submerged arc vuam .
Ntsiab Specifications
| Yam ntxwv | Kev piav qhia |
|---|---|
| Standard Number | GB/T 14291(tam sim no version: GB / T 14291-2016; yav dhau los: GB / T 14291-1992/1993) |
| Standard Title | "Welded steel kav rau kuv cov kua dej" / "矿粉矿浆输送用电焊钢管" |
| Cov xwm txheej tam sim no | GB/T 14291-2016 yog ua haujlwm (muaj txiaj ntsig Lub Xya Hli 1, 2017) |
| Yav dhau los Version | GB / T 14291-1993 (tshem tawm / siv tsis tau) |
| Daim ntawv thov tseem ceeb | Kev thauj mus los ntawm cov dej hauv av - dewatering, qhov cua, tso pa roj, slurry thauj |
| Hom yeeb nkab | Kauv submerged arc welded (SSAW / HSAW), ncaj seam welded (ERW), thiab seamless |
| Khoom siv / Qib | Q195, Q215, Q235, Q295, Q345 (carbon thiab qis- alloy steels) |
| Ntsiab Feature | Tshwj xeeb tsim rauabrasive mining ib puag ncig(ore pulp, slurry, ntxhia hmoov) |
Chemical & Mechanical Properties
| Qib | Tensile zog (min) | Yield zog (min) | Elongation% |
|---|---|---|---|
| Q235A / Q235B | 375 MPa rau | 235 MPa rau | 15-20% |
| Q295A / Q295B | 390 MPa ua | 295 MPa ua | 13-18% |
| Q345A / Q345B | 470 MPa rau | 345 MPa rau | 13-18% |
Qhov chaw:
Kev tsim khoom
Kauv submerged arc welded (SSAW) kav raws li GB / T 14291 yog tsim los siv cov txheej txheem hauv qab no:
Raw Khoom: Kub-rolled steel kauj lossis sawb (qib Q195, Q215, Q235, Q295, Q345)
tsim: Cov hlua hlau txuas txuas txuas txuas ntxiv - tsim ntawm chav tsev kub
Vuam: Ob chav -sided tsis siv neeg submerged arc vuam (sab hauv thiab sab nraud) tsim cov hlua khi
Kev sim: 100% ultrasonic lossis X-ray tshuaj xyuas ntawm vuam seam; Kev kuaj hydrostatic
Ua tiav: Xaus kev npaj thiab txheej txheej raws li xav tau
Daim ntawv thov
GB / T 14291 kauv welded kav yog tsim tshwj xeeb rau cov mining ib puag ncig:
| Daim ntawv thov | Kev piav qhia |
|---|---|
| Kuv Dewatering | Tso dej hauv av tawm ntawm kuv txoj haujlwm |
| Qhov cua tshuab | Cua muab khoom thiab tso pa tawm hauv av mines |
| Gas Dej | Methane / thee seam gas extraction (mine gas drainage) |
| Slurry Thauj | Ore pulp, ntxhia hmoov, thiab tailings thauj |
| Compressed Cua Kab | Lub zog pneumatic mining khoom |
| Tiv thaiv hluav taws | Mine hluav taws tua hluav taws systems |
Ntsiab nta & qhov zoo
| Feature | Kev piav qhia |
|---|---|
| Abrasion Resistance | Tsim los rau abrasive mining ib puag ncig (ore pulp, slurry) |
| Corrosion Resistance | Haum rau kuv cov dej thiab corrosive kua |
| Loj Loj Muaj peev xwm | SSAW txheej txheem ua rau cov kav loj - txoj kab uas hla mus txog 4000mm |
| Tus nqi -Cov | Kev lag luam ntau dua seamless rau loj diameters |
| Kev xaiv muaj zog siab | Q345 qib muab 470 MPa tensile zog |
Dimensional Tolerances
| Parameter | Ua siab ntev |
|---|---|
| Sab nraud txoj kab uas hla (D Tsawg dua los yog sib npaug rau 48.3mm) | ± 0.50 hli |
| Sab nraud txoj kab uas hla (48.3mm |
±1% D |
| Sab nraud txoj kab uas hla (D> 273mm) | ±0.75% D |
| Phab ntsa Thickness | ±10% S |
Qhov chaw:
Kev xeem yuav tsum tau
| Hom kev xeem | Kev xav tau | Ntau zaus |
|---|---|---|
| Tshuaj ntsuam xyuas | Ib GB / T 20066, GB / T 223, GB / T 4336 | Txhua qhov kub |
| Tensile Test | Rau GB / T 228 | Txhua batch |
| Hydrostatic Test | Rau GB / T 241 | Txhua lub raj |
| Kev kuaj ultrasonic | Rau GB/T 18256 | Txhua lub raj |
| Eddy Current Flaw Detection | Rau GB/T 7735 | Txhua lub raj |
| Khoov Test | Rau GB / T 244 | Ob leeg rau batch |
| Flattening Test | Rau GB / T 246 | Plaub rau yob |
Cov txheej txheem ntsig txog
| Txuj | Daim ntawv thov |
|---|---|
| GB/T 3091 | Tsawg- cov kua xa tawm siab (dej, roj, nkev) |
| SY/T 5037 | Kauv submerged arc welded yeeb nkab rau qis - cov kav dej siab |
| GB/T 9711.1/9711.2 | Petroleum thiab natural gas pipeline tsheb thauj mus los |
| API 5L | International kab yeeb nkab txheem |
| ASTM A53 | General Piping Standard (US) |
Cov Lus Cim Tseem Ceeb
1. Cov qauv qauv
GB/T 14291-2016yog qhov tam sim no version (muaj txiaj ntsig Lub Xya Hli 1, 2017)
Cov ntawv qub: GB / T 14291-1993, GB / T 14291-1992 yog siv tsis tau
2. Kev Siv Lub Ntsiab Tseem Ceeb
GB / T 14291 tshwj xeeb raukev siv mining(mine dewatering, qhov cua, roj ntws, slurry thauj)
Rau qhov tsis tshua muaj - cov kua xa hluav taws xob (dej, roj, nkev),GB/T 3091yog tsim nyog
3. SSAW vs. ERW
Tus qauv npog ob qho tib siKauv submerged arc welded (SSAW)thiabncaj seam welded (ERW)cev
Kauv welding yog nyiam rauqhov loj dua(feem ntau> 219mm)
4. Cov khoom siv qib
Cov qib uas muaj xws liQ235B(feem ntau),Q295, thiabQ345rau kev siv zog ntau dua
Rau qhov xav tau ntau qhov chaw mining, Q345 tau pom zoo rau nws lub zog tensile siab dua (470 MPa)
Cov ntsiab lus
GB / T 14291 kauv submerged arc welded steel yeeb nkabyog tsim tshwj xeeb raumining kua siv thauj mus lossuav nrog kev dewatering, qhov cua, roj ntws, thiab slurry thauj.
Cov yam ntxwv tseem ceeb:
Tsim los ntawmKauv submerged arc vuam (SSAW)txheej txheem
Muaj nyob rau hauv qibQ235B, Q295, Q345
Haum rauabrasive mining ib puag ncig(ore pulp, slurry, ntxhia hmoov)
Tsim nyob rau hauvloj diameters(txog 4000mm)
Yuav tsum tau100% tsis yog -kev kuaj kev puas tsuajntawm weld seams
Active standard:GB/T 14291-2016(Lub Xya Hli 2017)
Thaum ordering, qhia:GB/T 14291, Qib (Q235B/Q295/Q345), SSAW (kauv submerged arc welded), Loj (OD x WT), Ntev, Qhov Kawg Finish, thiab Coating Requirements.
