Widely applied in roads, squares, garden, harbor, airport, parking
area, railway and other industrial areas and apartment buildings.
a. Best drainage: leaking space is up to 83.3o% and doubles cast
b. Hot dip galvanized: Strong anti-stain capability and no
maintenance and replacement needed.
c. Security: It is secure and easy to open as the frame and the lid
are linked with hinge.
d. Less investment: When the item is wide and bears heavy weight,
it won't be broken and replaced, so as to save expenses.
e. Higher strength: Much stronger than cast iron product and
applied at harbor and airport to bear heavy weight.
f. Multi specifications: Meeting the different requirement for
size, shape, span and load.