Q355B yog qib tseem ceeb ntawm qis- alloy siab - lub zog cov qauv hlau tau teev nyob rau hauv Suav teb tus qauv $$\\text{GB/T 1591-2018}$$ (Low-Alloy High-Strength Structural Steel). Kev hloov pauv qib qub Q345B hauv 2019, nws tau hloov kho cov ntsuas kev ua tau zoo, coj nws ua raws li European S355 tus qauv thiab dhau los ua "cov pob txha" cov khoom siv hauv Tuam Tshoj cov qauv hlau. Nws lub npe hu ua kom meej meej qhia txog nws cov yam ntxwv tseem ceeb: "Q" sawv cev rau pinyin pib ntawm "yield zog", "355" qhia qhov tsawg kawg nkaus lub zog ntawm 355MPa thaum lub thickness tsawg dua los yog sib npaug rau 16 hli (lub zog tawm los txo qis li ntawm 10-15MPa rau txhua txhua 10mm nce nyob rau hauv thickness), thiab "V" grade tsis muaj zog ntawm ntau dua lossis sib npaug rau 34J ntawm 20℃.
Lub cev muaj zog
| Khoom | Qhov kub thiab txias | Tus nqi (Metric) | Tus nqi (Imperial) |
|---|---|---|---|
| Qhov ntom | Chav ntsuas kub | 7.85 g / cm³ | 0.284 lb/in³ |
| Melting Point | - | 1420 - 1540 degree | 2590 - 2810℃F |
| Thermal conductivity | Chav ntsuas kub | 50 W/m·K | 34.5 BTU·in/(hr·ft²·° F) |
| Tshwj xeeb kub muaj peev xwm | Chav ntsuas kub | 0.49 kJ/kg · K | 0.12 BTU/lb ·℃F |
Qhov ntom ntawm Q355B steel ua rau nws muaj kev xaiv zoo rau kev siv cov qauv, thaum nws cov thermal conductivity txaus rau feem ntau cov kev xav tau. Lub melting point qhia tias nws tuaj yeem tiv taus qhov kub thiab txias ua ntej hloov mus rau lub xeev ua kua, txawm tias yuav tsum tau saib xyuas hauv cov ntawv thov uas muaj cua sov heev.
Peb lub tuam txhab muab ib qho -Stop service, Yog tias koj muaj kev xav tau thov hu rau peb.
GNEE yuav pab koj nrhiav cov khoom lag luam thiab cov kev pabcuam txaus siab tshaj plaws.
Cim npe nrov: Q355B Steel Phaj rau Tsev, Choj thiab Engineering Projects, Tuam Tshoj Q355B Steel Phaj rau Tsev, Choj thiab Engineering Projects tuam ntxhab, cov chaw muag khoom, Hoobkas
