a. Description: Winch Drum b.Material: ZG275-485 c. Size: OD:1200mm, ID: ... ) Chain wheel, gear wheel, sheave, idler wheel, platen, winding drum, helm seat etc. for deck machining use apply to vessel ... , big shaft, block, module etc.(6) Fire grate car, carrier wheel, driving chain, chain wheel etc. for mine metallurgical engineering ... DNV,BV,ABS,CCS,Germany classification society attestation. Winch Drum