Kauv Welded Carbon Steels Pipe Rau Dej Kab Tubing
1. Nkag siab txog kauv welded carbon steel yeeb nkab:
Spiral welded carbon steel yeeb nkabyog spirally tsim thiab welded los ntawm steel coils.Cov txheej txheem tsim tshwj xeeb ua rau cov kav dej no muaj zog thiab ruaj khov dua, muaj peev xwm tiv taus siab sab hauv thiab sab nraud.Lub peev xwm los tiv thaiv corrosion thiab deformation kuj ua rau nws haum rau ntau yam kev siv, nrog rau cov kav dej thiab cov yeeb nkab hlau vuam.
| Txuj | Qib hlau | Tshuaj muaj pes tsawg leeg | Tensile zog | Charpy Impact Test thiab Drop Weight Tear Test | ||||||||||||||
| C | Si | Mn | P | S | V | Nb | Ti | CEV 4 (%) | Rt0.5 Mpa Yield zog | Rm Mpa Tensile zog | Rt 0.5 / Ib | （L0 = 5.65 √ S0 ） Ntev A% | ||||||
| max | max | max | max | max | max | max | max | Lwm yam | max | min | max | min | max | max | min | |||
| L245 MB | 0.22 | 0.45 ib | 1.2 | 0.025 ib | 0.15 | 0.05 Nws | 0.05 Nws | 0.04 ib | 1) | 0.4 | 245 | 450 | 415 | 760 ib | 0.93 ua | 22 | Charpy impact test: Impact absorbing zog ntawm cov yeeb nkab lub cev thiab weld seam yuav tsum tau sim raws li qhov yuav tsum tau ua nyob rau hauv thawj tus qauv.Yog xav paub ntxiv, saib tus qauv qub.Tee hnyav kua muag kuaj: xaiv qhov chaw shearing | |
| GB/T9711-2011 (PSL2) | L290 MB | 0.22 | 0.45 ib | 1.3 | 0.025 ib | 0.015 ib | 0.05 Nws | 0.05 Nws | 0.04 ib | 1) | 0.4 | 290 | 495 ib | 415 | 21 | |||
| L320 MB | 0.22 | 0.45 ib | 1.3 | 0.025 ib | 0.015 ib | 0.05 Nws | 0.05 Nws | 0.04 ib | 1) | 0.41 ib | 320 | 500 | 430 | 21 | ||||
| L360 MB | 0.22 | 0.45 ib | 1.4 | 0.025 ib | 0.015 ib | 1) | 0.41 ib | 360 | 530 | 460 | 20 | |||||||
| L390 MB | 0.22 | 0.45 ib | 1.4 | 0.025 ib | 0.15 | 1) | 0.41 ib | 390 | 545 ib | 490 ib | 20 | |||||||
| L415 MB | 0.12 | 0.45 ib | 1.6 | 0.025 ib | 0.015 ib | 1) 2) 3 | 0.42 ib | 415 | 565 ib | 520 | 18 | |||||||
| L450 MB | 0.12 | 0.45 ib | 1.6 | 0.025 ib | 0.015 ib | 1) 2) 3 | 0.43 ib | 450 | 600 | 535 ib | 18 | |||||||
| L485 MB | 0.12 | 0.45 ib | 1.7 | 0.025 ib | 0.015 ib | 1) 2) 3 | 0.43 ib | 485 ib | 6 35 | 570 ib | 18 | |||||||
| L555 MB | 0.12 | 0.45 ib | 1.85 ib | 0.025 ib | 0.015 ib | 1) 2) 3 | Kev sib tham | 555 | 705 ib | 625 | 825 ib | 0.95 ib | 18 | |||||
| Nco tseg: | ||||||||||||||||||
| 1) 0.015 ≤ Altot ＜ 0.060；N ≤ 0.012； AI—N ≥ 2—1；Cu ≤ 0.25； Ni ≤ 0.30； Cr ≤ 0.30； Mo ≤ 0.10 | ||||||||||||||||||
| 2) V+Nb+Ti ≤ 0.015% | ||||||||||||||||||
| 3) Rau txhua qib steel, Mo yuav ≤ 0.35%, raws li daim ntawv cog lus. | ||||||||||||||||||
| Mn Cr+Mo+V Cu+Ni 4) CEV=C+ 6+5+5 | ||||||||||||||||||
2. Cov kav dej kav dej:
Hauv kev faib dej, kev nyab xeeb thiab kev xa dej huv yog qhov tseem ceeb.Kauv welded carbon steel yeeb nkab tau ua pov thawj tias yog qhov kev xaiv txhim khu kev qha rau cov kav dej vim nws cov khoom tiv thaiv corrosion.Qhov saum npoo du ntawm cov kav dej no txo qis kev sib txhuam, ua kom cov dej ntws tsis tu ncua thiab txo qhov turbulence.Tsis tas li ntawd, lub zog muaj zog thiab kav ntev tau lees paub tiv thaiv kev xau, tawg, thiab kev ua haujlwm tsis ua haujlwm, ua kom muaj kev ruaj ntseg txuas ntxiv, txhim khu kev qha dej.
3. Hlau yeeb nkab vuam:
Kev lag luam welding cia siab ntau rau cov kauv welded carbon steel yeeb nkab rau ntau yam kev siv.Qhov tshwj xeeb lub zog thiab yoog raws ntawm cov kav dej no ua rau lawv zoo tagnrho rau cov yeeb nkab hlau vuam.Txawm hais tias tsim lub tank loj, cov kav dej thauj cov roj thiab roj, lossis cov khoom siv hauv cov chaw tsim khoom, cov kav dej welded carbon steel kav ua lub luag haujlwm tseem ceeb.Lub uniformity ntawm welded pob qij txha ua kom muaj kev ntseeg siab thiab kev nyab xeeb ntawm cov qauv, txo qhov kev xav tau ntawm kev tu lossis kho ntau zaus.
4. Cov txiaj ntsig thiab qhov zoo:
4.1 Kev daws teeb meem raug nqi: Kauv welded carbon steel yeeb nkab muab cov kev daws teeb meem zoo rau cov kav dej thiab cov yeeb nkab hlau vuam.Lawv durability thiab corrosion kuj ua kom lub neej ntev kev pab cuam, yog li txo cov nqi hloov thiab tu.
4.2 Ib qho yooj yim rau nruab: Cov kauv vuam tshuab siv hauv cov txheej txheem tsim khoom tuaj yeem tsim cov kav dej ntev thiab txuas ntxiv, txo qhov xav tau ntawm cov pob qij txha nquag.Qhov kev tsim qauv yooj yim no yooj yim rau kev teeb tsa, txuag lub sijhawm thiab kev siv zog.
4.3 Versatility: Kauv welded carbon steel kav yog muaj nyob rau hauv ntau yam diameters thiab thicknesses, cia lawv hloov mus rau ntau yam kev siv.Lawv tuaj yeem hloov kho kom tau raws li qhov kev xav tau tshwj xeeb, hloov mus rau ntau yam kua dej, qhov kub thiab txias.
4.4 Kev tiv thaiv ib puag ncig: Carbon steel yog cov khoom siv rov ua dua tshiab uas ua rau muaj kev ruaj ntseg ib puag ncig.Kauv welded carbon steel kav yuav siv tau thiab rov siv dua, txo cov pov tseg thiab tiv thaiv cov khoom siv ntuj tsim.
Hauv kev xaus:
Lub peev xwm thiab qhov zoo ntawm kauv welded carbon steel kav hauv cov kav dej thiabhlau yeeb nkab vuamtsis tuaj yeem kwv yees.Kev hloov pauv tau zoo thiab txhim khu kev qha ntawm cov dej thiab cov kua dej ua haujlwm tso siab rau lawv cov kav ntev, corrosion kuj thiab yooj yim ntawm installation.Raws li qhov kev xav tau ntawm cov khoom siv muaj zog thiab cov nqi tsim nyog tau nce ntxiv, cov kav dej welded carbon steel kav yuav tseem yog ib qho tseem ceeb hauv kev ua kom muaj kev ua haujlwm zoo ntawm cov dej thiab cov txheej txheem kev lag luam thoob ntiaj teb.
