1. A671 CA55 Class 10 Steel Pipe yog dab tsi?
A:Nws yog ibhluav taws xob-fusion-welded (EFW) carbon steel yeeb nkabtsim rauqis-kev pabcuam kub(hauv qab-50 ° F / -45 ° C). Lub "CA55" qhia txog nwschemical muaj pes tsawg leeg thiab kev xeem yuav tsum tau, thaum "Class 10" qhia nwskev ntsuas siab(piv txwv li, 10,000 psi hydrostatic test).
Kev siv tseem ceeb:Cov ntawv thov Cryogenic, LNG systems, thiab qis - cov kav dej siab.
2. Cov qauv twg tswj hwm A671 CA55 Chav Kawm 10 Pipes?
A:Nws ua raws liASTM A671 Cov Lus Qhia Tshwj Xeeb, uas npog EFW kav dej rau atmospheric/tso-kev pab kub. Cov ntsiab lus tseem ceeb:
Khoom siv:Cov pa roj carbon steel nrog tswj chemistry (piv txwv li, silicon, carbon).
Kev kuaj:Hydrostatic, nondestructive (radiographic/ultrasonic), thiab Charpy impact tests (rau low-temp toughness).
3. Chav Kawm 10 Muab piv rau Lwm Chav Kawm li cas (xws li Chav Kawm 20/30)?
A:
Lub peev xwm siab:Chav kawm 10=10,000 psi xeem siab; Chav kawm 20=20,000 psi, thiab lwm yam.
Phab ntsa Thickness:Chav kawm 10 feem ntau muajphab ntsa nyiastshaj cov chav kawm siab dua.
Daim ntawv thov:Chav Kawm 10 haum rau nruab nrab siab; Chav kawm 20+ rau siab -siab tshuab.
4. Dab tsi yog Vuam thiab Fabrication Requirement?
A:
Vuam:Submerged arc vuam (SAW) los yog zoo sib xws, nrog100% radiographic tshuaj xyuas.
Tshaj tawm -Weld Heat Treatment (PWHT):Feem ntau yuav tsum tau txo kev ntxhov siab.
Fabrication kam rau ua:Ua raws li ASTM A671 qhov ntev (xws li OD, phab ntsa thickness).
5. Qhov twg A671 CA55 Chav Kawm 10 Pipes nquag siv?
A:Cov ntawv thov ib txwm muaj xws li:
Roj & Roj:Cryogenic cia, refinery piping.
Fais fab nroj tsuag:Tsawg-temp coolant kab.
Kev ua tshuaj lom neeg:Siv cov roj liquefied (piv txwv li, ammonia).
