Q355B se yon nouvo kalite Q345B asye anba GB / T1591-2018 estanda ki ba alyaj estriktirèl asye. Li ekivalan a Q345B nan vèsyon GB/T1591-2008 ak S355JR nan vèsyon EN 10025-2:2004.
Konpozisyon chimik (%) konparezon Q345B ak Q355B:
| Materyèl | C max. | Si max. | Mn max. | P max. | S max. | Cr max. | Ni max. | Cu max. | N max. | Nb max. | V max. | Ti max. | Mo max. |
| Q345B | 0.20 | 0.50 | 1.70 | 0.035 | 0.035 | 0.30 | 0.50 | 0.30 | 0.012 | 0.07 | 0.15 | 0.20 | 0.10 |
| Q355B | 0.20 | 0.55 | 1.60 | 0.030 | 0.030 | 0.30 | 0.30 | 0.40 | 0.012 | - | - | - | - |
Konparezon pwopriyete mekanik Q345B ak Q355B asye:
| Klas | Sede fòs MPa nan diferan epesè mm | ||||||||
| Mwens pase oswa egal a 16 | 16-40 | 40-63 | 63-80 | 80-100 | 100-150 | 150-200 | 200-250 | 250-400 | |
| Q345B | Pi gran pase oswa egal a 345 | Pi gran pase oswa egal a 335 | Pi gran pase oswa egal a 325 | Pi gran pase oswa egal a 315 | Pi gran pase oswa egal a 305 | Pi gran pase oswa egal a 285 | Pi gran pase oswa egal a 275 | Pi gran pase oswa egal a 265 | - |
| Q355B | Pi gran pase oswa egal a 355 | Pi gran pase oswa egal a 345 | Pi gran pase oswa egal a 335 | Pi gran pase oswa egal a 325 | Pi gran pase oswa egal a 315 | Pi gran pase oswa egal a 295 | Pi gran pase oswa egal a 285 | Pi gran pase oswa egal a 275 | - |
| Klas | Fòs rupture MPa nan diferan epesè mm | ||||||
| Mwens pase oswa egal a 40 | 40-63 | 63-80 | 80-100 | 100-150 | 150-250 | 250-400 | |
| Q345B | 470-630 | 470-630 | 470-630 | 470-630 | 450-600 | 450-600 | - |
| Q355B | 470-630 | 470-630 | 470-630 | 470-630 | 450-600 | 450-600 | - |
Nou pran angajman pou nou ofri w yon sèvis pwofesyonèl, fyab ak tèt chaje-gratis-stop pandan tout pwosesis la. Kèlkeswa kondisyon ou sou espesifikasyon, livrezon oswa sipò teknik yo ye, tanpri toujou santi yo lib yo kontakte nou pou solisyon detaye.
Nan GNEE, nou pran tout detay oserye pou asire ou resevwa bon jan kalite ki estab, livrezon alè- ak sèvis sensè ke ou ka fè konfyans. Kite nou ede w jwenn pwodwi asye ki pi satisfezan yo epi bati koperasyon alontèm-ak lapè total.
Baj popilè: Q355B ak Q345NH Weathering & Structural Steel Plak, Lachin Q355B ak Q345NH Weathering & Structural Steel Plak manifaktirè, Swèd, faktori
