Seamless Steel Tubes Rau Petroleum Cracking Supplier-GNEE
- Txuj
GB9948-2013 Qib: 10,20,12CrMo,15CrMo
- Siv
Siv nyob rau hauv kev tsim cov tub rauv taws, cua kub exchanger raj thiab kav rau roj refineries
- Deviation
| Hom | Loj | Ua siab ntev | |
| Kub dov yeeb nkab | sab nraud txoj kab uas hla | Tsawg dua lossis sib npaug li 159 | ± 1.00% |
| > 159 | ± 1.25% | ||
| Phab ntsa thickness | Tsawg dua los yog sib npaug li 20 | ± 12.5% | |
| > 20 | ± 10.0% | ||
| Cold draw tube | sab nraud txoj kab uas hla | Tsawg dua los yog sib npaug li 30 | ± 0.20 |
| 30~50 | ± 0.30 | ||
| >50 | ±0.8% | ||
| Phab ntsa thickness | Tsawg dua los yog sib npaug 3 | + 12%- 10% | |
| > 3 | ± 10% | ||
- Tshuaj muaj pes tsawg leeg, mechanical zog
| Txuj | Qib | Tshuaj muaj pes tsawg leeg (%) | ||||||
| C | Si | Mn | Ni | Cr | Mo | P.S | ||
| wb 9948 | 10 | 0.17 - 0.14 | 0.17 - 0.37 | 0.35 - 0.65 | Tsawg dua lossis sib npaug rau 0.25 | Tsawg dua lossis sib npaug rau 0.15 | / | Tsawg dua lossis sib npaug rau 0.035 |
| 20 | 0.17 - 0.24 | 0.17 - 0.37 | 0.35 - 0.65 | Tsawg dua lossis sib npaug rau 0.25 | Tsawg dua lossis sib npaug rau 0.25 | / | Tsawg dua lossis sib npaug rau 0.035 | |
| 12 CrMo | 0.08 - 0.15 | 0.17 - 0.37 | 0.40 - 0.70 | Tsawg dua lossis sib npaug rau 0.30 | 0.40 - 0.70 | 0.40 - 0.55 | Tsawg dua lossis sib npaug rau 0.035 | |
| 15 CrMo | 0.12 - 0.18 | 0.17 - 0.37 | 0.40- 0.70 | Tsawg dua lossis sib npaug rau 0.30 | 0.80 - 1.10 | 0.40 - 0.55 | Tsawg dua lossis sib npaug rau 0.035 | |
| Mechanical zog | Tensile zog (MPa) | Yield zog (MPa) | Extensibility (%) | |||||
| 10 | 330 - 490 | Ntau dua lossis sib npaug rau 205 | Ntau dua lossis sib npaug li 24 | |||||
| 20 | 410 - 550 | Ntau dua lossis sib npaug li 245 | Ntau dua lossis sib npaug li 21 | |||||
| 12 CrMo | 410 - 560 | Ntau dua lossis sib npaug rau 205 | Ntau dua lossis sib npaug li 21 | |||||
| 15 CrMo | 440 - 640 | Ntau dua lossis sib npaug rau 235 | Ntau dua lossis sib npaug li 21 | |||||
20 # cev
