Bollard Material:JIS.DIN.GB.ASTM.Carbn steel Singlet:34Kg-2000Kg Class certification NK,GL, DNV,BV,ABS etc. ship parts Bollard Material:JIS.DIN.GB.ASTM.Carbn steelSinglet:34Kg-2000Kgsand castingEfficiency: Annual output of more than 10,000 tons of steel-castingMain Product: We can manufacture carbon steel, alloy steel, high alloy steel, stainless steel, cast steel as per the Standard GB,JB,CB,ZB, ...