1. Dab tsi txhais tau tias ASTM A671 CJP115 Chav Kawm 11?
A carbon steel, hluav taws xob-fusion-welded (EFW) yeeb nkabrauqis- kub (-115℃F/-82 degree) thiab siabdaim ntawv thov.
CJP 115: Qhia chemistry (zoo ib yam li API 5L B) thiabCharpy V- ntsuas qhov cuam tshuam ntawm -115℃F.
Chav Kawm 11: Hydrostatic xeem siab ntawm1,100 psi (7.6 MPa).
2. Cov khoom tseem ceeb ntawm kev siv tshuab?
Yield zog: Ntau dua lossis sib npaug rau 35 ksi (240 MPa).
Tensile zog60-85 ksi (415-585 MPa).
Impact toughness: Yuav tsum tau ntawm-115℃Flos tiv thaiv brittle puas.
Kev kho cua sov: Normalized rau uniform microstructure.
3. Nws feem ntau siv qhov twg?
LNG cov terminalsthiab cryogenic pipelines.
Arctic roj / rojtsheb thauj mus los.
Tsawg-tej txheej txheem piping(eg, ethylene, nitrogen).
4. Nws ua li cas?
Ob -welded seamsnrog100% radiographyrau kev kuaj xyuas tsis raug.
Kev tswj nruj nruj: Max 0.025% sulfur / phosphorus.
Kev ntsuam xyuas ntxivASTM A370 Hydrostatic + Impact Test
5. Chav Kawm 11 piv rau Chav Kawm 10/12 li cas?
Kev ntsuas siab: Chav Kawm 11 (1,100 psi) zaum ntawm Chav Kawm 10 (1,000 psi) thiab Chav Kawm 12 (1,200 psi).
Sib koom ua ke: Txhua yam xav tau tib yamCJP 115low-kub kev ua haujlwm.
