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Materials

  1. The normal used material for mooring bollards are cast steel and ductile cast iron.
Ductile Cast Iron Cast Steel
Properties Quality Equivalent standards Quality Equivalent standards
GB/T1348-2009
QT450-10
ISO
450-10
ASTM
65-45-12
GB/T11352
ZG230-450
ISO
23-450W
ASTM
65-35
Yield Strength ≥310(Mpa) ≥310(Mpa) ≥31(Mpa) ≥230(Mpa) ≥230(Mpa) ≥240(Mpa)
Tensile Strength ≥450(Mpa) ≥450(Mpa) ≥448(Mpa) ≥450(Mpa) ≥450(Mpa) ≥450(Mpa)
Elongation ≥10(%) ≥10(%) ≥12(%) ≥22(%) ≥22(%) ≥24(%)

Both of them have its advantages during applications.

  • Advantage of Ductile Cast Iron: more corrosion resistance than steel and can tolerate compromised coatings better than steel. Ductile cast iron is more fluid during casting stage which results in a smoother finish.
  • Advantage of cast steel: available in a wide range of strength, this allows the bollard to be commercially competitive versus thicker cast iron bollards. The ductility of cast steel gives needed structural margin in the event of an overload situation.
  1. ANCHOR BOLTS: GRADE 8.8 H.D.G
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CHEMICAL ANALYSIS

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