1. A671 CJA115 Class 11 Steel Pipe yog dab tsi?
Teb:
A671 CJA115 Chav Kawm 11 yog ib qhohluav taws xob-fusion-welded (EFW) carbon steel yeeb nkabnrog3.5% npib tsib xee alloy, tsim rauultra-tsawg- kev pabcuam kub(hauv qab-150℃F / -101 degree). Cov yam ntxwv tseem ceeb:
CJA115: Cov ntaub ntawv qib nrog txhim kho cryogenic toughness.
Chav Kawm 11: Hydrostatic test siab ntsuas ntawm11,000 psi(raws li ASTM A671).
Daim ntawv thov: LNG terminals, cryogenic cia, thiab Arctic pipeline systems.
2. Nws cov khoom tseem ceeb yog dab tsi?
Teb:
ChemistryKhoom siv: Carbon steel +3.5% Nws, nrog tswj P, S, thiab Si rau weldability.
Mechanical Performance:
Tensile zog:Ntau dua lossis sib npaug rau 75 ksi (517 MPa)
Yield zog:Ntau dua lossis sib npaug rau 45 ksi (310 MPa)
Impact test ntawm-150℃F(Charpy V-yuav tsum tau muaj).
Kev kho cua sov: Normalized los yog tempered rau kev ntxhov siab.
3. Nws tsim thiab sim li cas?
Teb:
Txheej txheem: EFW nrog muab tub lim hlau, ua raws lipuv -lub cev normalization.
Kev Tswj Xyuas Zoo:
100% Cov duab hluav taws xob (RT)los yogAutomatic ultrasonic (AUT)kev soj ntsuam vuam.
Hydrostatic kuaj ntawm11,000 psi.
Qhov ntev: Hom OD ntau yam16"–48", phab ntsa thickness ib ASME B36.10.
4. Qhov twg yog Chav Kawm 11 nyiam dua lwm chav kawm?
Teb:
Siab -Kev Pab Cryogenic: Chav Kawm 11's11,000 psi ntsuassuits LNG pipelines nrog kev hloov pauv siab.
Ib puag ncig tseem ceeb: Offshore Arctic tej yaam num, qhov twgqis -kub brittlenessyog qhov kev txhawj xeeb tseem ceeb.
Txoj Cai Ua Raws Cai: Yuav tsum muaj rau ASME B31.3 Qeb M ua kua dej.
5. Cov qauv thiab ntawv pov thawj siv dab tsi?
Teb:
Thawj StandardASTM A671 (EFW kav dej rau qis temps).
Cov Codes ntxiv:
ASME B31.3 (Cov Txheej Txheem Piping) rau kev tsim.
NACE MR0175 / MR0103 rau qaub roj tsis kam (yog tias tsim nyog).
Daim ntawv pov thawj: MTRs nrog traceable chemistry, mechanical tests, and NDE reports.
