Double cross bollards are used to tie ropes to help vessels dock to the wharf. It can be made of steel, iron, ductile iron or stainless steel. The polished, galvanized surface of bollards make the rope get less abrasion. Bollards are painted bitumen on the surface in order to avoid being rust. The dimension, color, material type and other factors are determined by customers themselves. We can customized products according to customer’s special requirements. We can also provide the certificate such as CCS,ABS,BV. For more information, please feel free to contact us.