Seamless steel yeeb nkab rau kev siv lub nkoj siv yog siv rau Qib 1 & Qib 2 siab yeeb nkab hauv cov kav dej, boiler thiab super-rhuab chav tsev ntawm shipbuilding.
Qauv N0 .ntawm cov hlau loj: 320, 360, 410, 460, 490, thiab lwm yam.
Qhov ntau thiab tsawg:
| Hom steel raj | Tawm txoj kab uas hla | Phab ntsa thickness | ||
| Cold-rolled tubes | Tube loj (mm) | Qhov siab (mm) | Tube loj (mm) | Qhov siab (mm) |
| 30-50 | ± 0.3 | ≤ 30 | ± 10% | |
| 50-219 IB | ± 0.8% | |||
| Kub dov raj | 219 ib | ± 1.0% | ＞ 20 | ± 10% |
Kev sib xyaw tshuaj:
| Cov qauv ntawm cov raj steel | Kev sib xyaw tshuaj (%) | ||||
| C | Si | Mn | P | S | |
| 320 | ≤0.16 | ≤ 0.35 | 0.40-0.70 Nws | ≤ 0.035 | ≤ 0.035 |
| 360 | ≤ 0.17 | ≤ 0.35 | 0.40-0.80 Nws | ≤ 0.035 | ≤ 0.035 |
| 410 | ≤ 0.21 | ≤ 0.35 | 0.40–1.20 dr hab | ≤ 0.035 | ≤ 0.035 |
| 460 | ≤ 0.22 | ≤ 0.35 | 0.80-1.40 Nws | ≤ 0.035 | ≤ 0.030 |
| 490 ib | ≤ 0.23 | ≤ 0.35 | 0.80-1.50 Nws | ≤ 0.035 | ≤ 0.030 |
Mechanical zog:
| Cov qauv ntawm cov raj steel | Tensile zog (MPa) | Yield zog (MPa) | Elongation (%) |
| 320 | 320-410 : kuv | ≥195 | ≥ 25 |
| 360 | 360-480 : kuv | ≥215 | ≥ 24 |
| 410 | 410-530 : kuv | ≥235 | ≥ 22 |
| 460 | 460-580 : kuv | ≥265 | ≥ 21 |
| 490 ib | 490-610 : kuv | ≥285 | ≥ 21 |
Post lub sij hawm: Feb-10-2023