a. Description: Winch Drum b.Material: ZG275-485 c. Size: OD:1200mm, ID: ... alloy steel, stainless steel, cast steel as per the Standard GB,JB,CB,ZB,JIS,ASTM,SAE,DIN or special requirements ... declared NK,DNV,BV,ABS,CCS,Germany classification society attestation. Winch Drum