With Fish Tail Hot Dipped Galvanized Trench Grate or Drain Cover
for the Walkway
Drain cover is usually used in the side of the road and swage
treatment plant, it is for water drainage.Trench Drain Cover Gratings are steel lattice panels formed with
simple lines, secured with hinged lid and connection. Ideal
replacement drainage covers for conventional cast iron materials.
Suitable for light type and large span heavy loading environment.
Widely used in sewage treatment system in urban roads, squares,
gardens, docks, airports, parking lots, roads, railways, industrial
engineering and other types of industrial buildings.
Appearance: simple lines. Silver exterior, modern trends.
Best drainage: leakage area of 83.3%, more than double the cast
Hot-dip galvanizing: rust-proof and strong, maintenance and
Security design: box with hinged lid and connection, security,
safe, easy to open.
Saving investment: large span. When overloaded, the lowest ratio of
iron and saves replacement costs stolen, then crushed.
High strength: strength and toughness is much higher than cast
iron, can be used for terminals, airports and other large span and
heavy load environment.
Specifications and more: meet different environment and loading
requirement. Span, the desired size and shape.
Materials & Finishes
We design and manufacture many kinds of steel gratings, they are
Plain Style Steel Grating, Serrated Style Steel Grating, I Bar Type
Steel Grating and other gratings. They are widely used in steel
structure platforms, stair treads, sidewalks, drainages and well
covers etc. We also supply standard steel grating and in customized
shapes per client's requirements.
1) Bearing Bar (Load Bar) Specifications (mm):
The specification of plain type and serrated type bearing bar is 20
x 3 to 100 x 10;
2) Bearing Bar Pitch (center to center):
12.5, 15, 25, 30, 30.16, 32.5, 34, 40, 41.25, 45, 50, 60, 60.32,
80, 100 mm etc, also be according to client's requirement but 30,
40, 60mm are recommended.
America standard is available <1'' x 3/16'', 1 1/4'' x 3/16'',
1-1/2'' x 3/16'', 1'' x 1/4'', 1-1/4'' x 1/4'', 1 1/2'' x
1/4''(19-w-4) and so on.>
3) Cross Bar Pitch (center to center):
38, 50, 76, 100, 101.6mm etc, also be according to client's
requirement and 50, 100mm are recommended, America standard is
Mild Steel (Low Carbon Steel ASTM A36 or Q235) , Stainless Steel
304 or 316
5) Surface Treatment:
Untreated, Painting or Hot dip Galvanizing
6) Steel grating standards:
A) China: YB/T4001-1998
B) USA: ANSI/NAAMM (MBG531-88)
C) UK: BS4592-1987
D) Australia: AS1657-1985
E) Japan: JJS.
|Steel Grating Standard||Steel Standard||Galvanized Standard|
|China standard||YB/T 4001.1-2007||GB/T 13912-2002|
WELDED GRATINGEconomical design ideal for most industrial applications.
Manufactured by welding the bearing bar/cross bar intersection,
typically with automated forge welding equipment. Available in
carbon steel and stainless steel.
DOVETAIL PRESSURE LOCKEDPopular for the manufacture of aluminum, stainless steel, and close
mesh gratings. Cross bars are inserted into pre-punched holes in
the bearing bars and hydraulically deformed to lock the bars in
SWAGED PRESSURE LOCKEDAssembled by inserting pre-punched bearing and cross bars into an
“eggcrate” configuration and deforming the cross bars under intense
hydraulic pressure. Available in all materials and ideal for
architectural and ornamental applications.
RIVETED GRATINGExceptionally durable grating manufactured by riveting bearing bars
and bent connecting bars at their contact points. Excellent for
applications involving impact loads and repetitive traffic
1. What is the application of steel grating?
The main usage can be divided to 4 kinds: platform, flooring, stair
treads and drainage cover.
See the above pic for reference.
2. what is the quantity of galvanization? And how long will it
We do our galvanization as American standard, for over 5mm thick
steel grating, it is no less than
610g per square meter , for less than 5 mm thick steel grating, it
is no less than 460g per square meter usually it is 60-80μ per
square meter. And it can last at least 50 years.
3. Which standard can your products meet?
We can produce as customer's need. Here are most popular standard:
4. Do you provide design?
Yes, we can provide CAD design for customers, as long as you can
tell us your requirements.