1. A671 CH115 Class 13 Steel Pipe yog dab tsi?
Teb:
A671 CH115 Chav Kawm 13 yog ibhluav taws xob-fusion-welded (EFW) carbon steel yeeb nkabUa raws li ASTM A671 tus qauv, qhov twg:
"CH115"qhia acarbon steel qib nrog optimized manganese-silicon muaj pes tsawg leegrau balanced zog thiab weldability.
"Klass 13"sawv cev amid -ntau qhov ntsuas ntsuas, nyob nruab nrab ntawm Chav Kawm 12 thiab Chav Kawm 22 rau kev siv ntau yam.
Cov yam ntxwv tseem ceeb:
Siab Muaj Peev Xwm: Rated rauTsawg dua lossis sib npaug li 13 MPatshuab.
Qhov kub thiab txias: Haum rau-25℃rau 225 degree(-13 ° F txog 437 ° F).
Kev tsim kho: Longitudinal seams welded ntawmSubmerged arc vuam (SAW)nrog yeempost-weld kev kho cua sov (PWHT).
2. Chav Kawm 13 feem ntau siv nyob qhov twg?
Teb:
Cov ntawv thov uas muaj xws li:
Muaj Txheej Txheem Piping: Nruab nrab-siab chav, compressed cua.
Roj & Roj: Tsis yog-kub hydrocarbon thauj.
Fais fab nroj tsuag: Tsawg-kub kub exchanger tubing.
Nco tseg: Yuav tsum taukev ntsuam xyuas cuam tshuamyog tias qhov kev pabcuam kub poob qis dua-20 degree.
3. Chav Kawm 13 piv rau Chav Kawm 12 thiab Chav Kawm 22 li cas?
Teb:
| Parameter | Chav Kawm 13 | Chav Kawm 12 | Chav Kawm 22 |
|---|---|---|---|
| Kev ntsuas siab | Tsawg dua lossis sib npaug li 13 MPa | Tsawg dua lossis sib npaug li 12 MPa | Ntau dua lossis sib npaug li 22 MPa |
| Kev sim | 30% RT + yeem UT | 20% RT | 100% RT + UT |
| Khoom Toughness | Charpy Ntau dua lossis sib npaug rau 30J ntawm -20℃(yog tias xav tau) | Ntau tshaj lossis sib npaug rau 27J ntawm -20 degree | Yuav tsum tau kuaj -46 degree |
Qhov tseem ceeb Advantage: Chav Kawm 13 muabsiab siab kam rau siab tshaj hoob 12nrogkev xav tau kev ntsuas nruab nrab.
4. Cov khoom siv thiab cov khoom siv kho tshuab
Teb:
Tshuaj muaj pes tsawg leeg:
Carbon: Tsawg dua lossis sib npaug li 0.23%, Mn: 1.10-1.60%, Si: 0.20-0.45%.
Mechanical Properties:
Tensile zog:Ntau dua lossis sib npaug li 470 MPa
Yield zog:Ntau dua lossis sib npaug li 275 MPa
Charpy Impact: Ntau dua lossis sib npaug rau 30J ntawm -20℃(qhov project tshwj xeeb).
Qhov ntev: 4" rau 52" OD, phab ntsa thickness perASME B36.10.
5. Fabrication thiab Quality Assurance
Teb:
Vuam: SAW with30% RT kev pab them nqi(upgradable rau 100%).
Kev sim:
Hydrostatic Test ntawm1.8x tsim siab.
Xaiv tauPMI thiab hardness kuajrau cov ntawv thov tseem ceeb.
Daim ntawv pov thawj: MTRs nrog tag nrho traceability, ua raws liASTM A671 Cov Lus Qhia Tshwj XeebthiabASME B31.3.
