Qhov loj-inch kub dov seamless kav thiab high-frequency welded kav feem ntau ua tiav los ntawm txias dov, high-frequency vuam, sib sau thiab lwm yam txheej txheem. Nws yog ib lub raj seamed.
Seamless steel kav muab faib ua cov kav dej kub-dov seamless thiab txias-draw seamless kav. Kub dov raj yog forged, pierced, dov thiab tsim. Feem ntau, qhov loj-inch, tuab-walled seamless kav txais daim ntawv no; Cov kav dej txias txias yog ua los ntawm cov yeeb nkab txias txias, nrog cov khoom siv tsis tshua muaj zog thiab cov tsos zoo nkauj thiab kev tswj xyuas sab hauv. Me-inch, nyias-walled seamless kav feem ntau poob rau hauv pawg no.
Chemical composition ntawm cov khoom:
| Qib Steel | C | Si | Mn | P Tsawg dua lossis sib npaug | S Tsawg dua los yog sib npaug | Cu Less tshaj los yog sib npaug | Ni tsawg dua los yog sib npaug | Cr Tsawg dua lossis sib npaug | Mo Less tshaj los yog sib npaug | V Tsawg dua los yog sib npaug |
| ASTM A106 B | Tsawg dua lossis sib npaug rau 0.3 | / | Tsawg dua los yog sib npaug rau 1.2 | 0.05 | 0.06 | 0.4 | 0.4 | 0.4 | 0.15 | 0.08 |
| TSI 35 | Tsawg dua lossis sib npaug rau 0.18 | 0.15-0.35 | 0.35-0.65 | 0.035 | 0.035 | 0.25 | 0.25 | 0.25 | / | / |
| TSI 45 | Tsawg dua lossis sib npaug rau 0.25 | 0.15-0.35 | 0.5-0.8 | 0.035 | 0.035 | 0.25 | 0.25 | 0.25 | / | / |
| TSI 52 | Tsawg dua lossis sib npaug rau 0.2 | Tsawg dua lossis sib npaug rau 0.55 | Tsawg dua los yog sib npaug li 1.5 | 0.035 | 0.035 | 0.25 | 0.25 | 0.25 | / | / |
| CK45 | 0.42-0.5 | 0.17-0.37 | 0.5-0.8 | 0.035 | 0.035 | 0.25 | 0.25 | 0.25 | / | / |
Mechanical Properties
| Qib Steel | Rm MPa | ReH Mpa |
| TSI 45 |
Ntau dua lossis sib npaug li 520 |
Ntau dua lossis sib npaug rau 375 |
| ST52 (E355) |
Ntau dua lossis sib npaug li 600 |
Ntau dua lossis sib npaug li 520 |
| SAE 1026 |
Ntau dua lossis sib npaug li 600 |
Ntau dua lossis sib npaug rau 510 |
| 16 Mn |
Ntau dua lossis sib npaug li 600 |
Ntau dua lossis sib npaug li 520 |
| 20# |
Ntau dua lossis sib npaug li 520 |
Ntau dua lossis sib npaug rau 375 |
