1. ASTM A671 CJB115 Class 32 Steel Pipe yog dab tsi?
Teb:ASTM A671 CJB115 Chav Kawm 32 yog asiab -lub zog hluav taws xob- fusion-welded (EFW) carbon steel yeeb nkabtsim rautseem ceeb heev - kev siv siab(Kev pabcuam kub siab tshaj -20 ° F / -29 ° C). Lub npe "Class 32" qhia tias aYam tsawg kawg nkaus lub zog ntawm 32 ksi (221 MPa), ua rau nws tsim nyog rau kev xav tau kev lag luam tshuab xav tau kev ua kom zoo dua qub.
2. Cov khoom tseem ceeb?
Teb:
Mechanical:
Tawm Zog: Ntau dua lossis sib npaug rau 32 ksi (221 MPa)
Tensile zog: 100-120 ksi (690-827 MPa)
Impact Test: Yuav tsum muaj rau cov ntawv thov kev thauj khoom cyclic
Tshuaj:
Carbon (C): Tsawg dua lossis sib npaug li 0.35%
Manganese (Mn): 1.25-1.55%
P / S: Tsawg dua lossis sib npaug rau 0.030%
3. Cov ntawv thov zoo li cas?
Teb:
Siab -siab hydraulic systems (3000+ psi)
Fais fab nroj tsuag kab kab
Offshore platform piping
Heavy industrial siab hlab ntsha
4. Nws piv rau Class 31 thiab Class 35 li cas?
Teb:
| Chav kawm | Yield zog | Qhov txawv tseem ceeb |
|---|---|---|
| 31 | 31 ksg | High -siab tus qauv |
| 32 | 32 ksg | Txhim khu kev ntsuas siab |
| 35 | 35 ksg | Tshwj xeeb heev - siab |
5. Fabrication Requirements?
Teb:
Vuam:Preheat (400℃F min.) + PWHT (1100-1250℃F)
Kev sim:Hydrostatic (2.5x tsim siab) + 100% RT/UT
Kev tsim: Hot bending required for thickness >0.5"
Ntawv pov thawj:Tag nrho MTRs nrog traceability
