... NK,GL, DNV,BV,ABS etc. ship parts Bollard Material:JIS.DIN.GB.ASTM.Carbn steelSinglet:34Kg-2000Kgsand castingEfficiency: Annual output of ... steel as per the Standard GB,JB,CB,ZB,JIS,ASTM,SAE,DIN or special requirements from Customers.1) Chain wheel, gear ... ,chock etc, for mooring, port working equipment .(4) Pump body, valve body etc. for petrochemical industry working.(5) Gear, Bull Gear ...