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Bolster and Side Frame for Railway Freight Wagon

2025-04-13 introduction 3800
bolster
Chemical Hardening Sand
Directional Crystallization
Sodium Silicate Sand Core
Wagon
M/C Machining
AAR Grade B,B+,C
Polishing
150
Tb/AAR/GOST
400-900kg
Casting
Shot Blasting
East Railway
Wooden Box
Railway Standard
China
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