1. ASTM A671 CC60 Class 11 yog dab tsi?
Txhais: Electric-fusion-welded (EFW) yeeb nkab rauqis- mus rau- nruab nrab kub thiab siab pab, optimized raucryogenic thiab industrial siv.
Ntsiab Specs:
Yield zog: 60 ksi (414 MPa) ntawm-20 ° F (-29 ° C).
Kev ntsuas siab: 1,500 psi (103 bar)(Kub 11).
Khoom siv: Carbon steel nrogcuam tshuam - kuaj cov khoom(feem ntau tua hlau).
2. Cov ntawv thov
Kev lag luam:
Cryogenic cia tso tsheb hlau luam thiab hloov kab (LNG, kua oxygen).
Refinery thiab chemical cog piping (tsis yog -cov kua corrosive).
Zog:
Tsawg-pas kis tau tus mob.
Cov kab hluav taws xob siv hluav taws xob (tsawg- qhov ntsuas kub).
3. Cov Khoom Siv Khoom & Kev Ntsuas
| Khoom | Kev xav tau | Test Standard |
|---|---|---|
| Yield zog | Ntau dua lossis sib npaug li 60 ksi ntawm-20 ° F (-29 ° C) | ASTM A 370 Cov Lus Qhia Tshwj Xeeb |
| Charpy Impact | Ntau dua lossis sib npaug li 20 ft-lb (27 J) ntawm-50 ° F (-45 ° F) | ASTM A673 (Pawg 2 lossis siab dua) |
| Hydrostatic Test | 1.5x tsim siab (2,250 psi) | ASTM A671 Tshooj 12 |
| NDT | Radiographic los yog ultrasonic kuaj | ASTM E94 / E 213 |
4. Kev tsim khoom & ntawv pov thawj
Txheej txheem:
Submerged arc welding (SAW) lossis cov txheej txheem EFW zoo sib xws.
Optional post-weld heat treatment (PWHT) rau kev ntxhov siab.
Daim ntawv pov thawj:
Ua raws liASME B31.3, API 5L PSL1, thiabTS EN ISO 3183.
Xaiv tauNWS MR0175rau kev pabcuam qaub.
5. Kev txwv kev ua haujlwm & kev ua raws cai
Qhov kub thiab txias: -50 ° F txog 650 ° F (-45 ° F txog 343 ° F).
Siab txwv: Tsawg dua lossis sib npaug li 1,500 psi (103 bar) rau Chav Kawm 11.
Cov qauv tseem ceeb:
TS EN ISO 3183(Peline tsheb thauj mus los).
ASME B31.3(Cov txheej txheem kav dej).
