Customized Stainless Steel Trench Grate , Drain Cover for Drainage System
Description:
Stainless steel grating, is an important type of our products. Usually the stainless steel grating is made of SS304 or SS316. And the cross bar is normally round one, this will makes the grating more beautiful.SS steel bar grating is made of SS304 or SS316. It is of the same manufacture process. The surface is polished and electrolyzed. And it has better anti-rust property than hot dip galvanization and painting.
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.
Trench cover is another usage of steel grating, it's usually used in drainage system, like sewage treatment plant, port drainage channels, and plaza drainage system. As our products are mostly hot dip galvanzied, it can resist corrision and rust. Moreover, we can produce different size of steel grating for customers according to different load capacity requirement, shape request, etc.
Feature:
Appearance: simple lines. Silver exterior, modern trends.
Best drainage: leakage area of 83.3%, more than double the cast iron.
Hot-dip galvanizing: rust-proof and strong, maintenance and replacement.
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.
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 available.
4) Material:
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.
Common specifications:
Steel Grating Standard | Steel Standard | Galvanized Standard |
China standard | YB/T 4001.1-2007 | GB/T 13912-2002 |
USA standard | ANSI/NAAMM(MBG531) | ASTM(A123) |
U.K.standard | BS4592 | BS729 |
Australia standard | AS1657 | AS1650 |
Application
1. Widely used in shipbuilding, harbor, oceanographic engineering, building, paper mills, cement plant, medicine, spinning and weaving.
2. Is applied in food stuff factory, transportation, municipal administration, parking lot , etc.
3. Also used by various plants such as electric power, petroleum,chemical industry.
Standard size trench cover details
NO. | Bearing bar pitch | Cross bar pitch | Specification of bearing bar load( width × thickness ) | |||||
20×3 | 25×3 | 32×3 | 40×3 | 20×5 | 25×5 | |||
1 | 30 | 100 | G203/30/100 | G253/30/100 | G323/30/100 | G403/30/100 | G205/30/100 | G255/30/100 |
50 | G203/30/50 | G253/30/50 | G323/30/50 | G403/30/50 | G205/30/50 | G255/30/50 | ||
2 | 40 | 100 | G203/40/100 | G253/40/100 | G323/40/100 | G403/40/100 | G205/40/100 | G255/40/100 |
50 | G203/40/50 | G253/40/50 | G323/40/50 | G403/40/50 | G205/40/50 | G255/40/50 | ||
3 | 60 | 50 | - | G253/60/50 | G253/60/50 | G403/60/50 | G205/60/50 | G255/60/50 |
NO. | Bearing bar pitch | Cross bar pitch | Specification of bearing bar load( width × thickness ) | |||||
32×5 | 40×5 | 45×5 | 50×5 | 55×5 | 60×5 | |||
1 | 30 | 100 | G325/30/100 | G405/30/100 | G455/30/100 | G505/30/100 | G555/30/100 | G605/30/100 |
50 | G325/30/50 | G405/30/50 | G455/30/50 | G505/30/50 | G555/30/50 | G605/30/50 | ||
2 | 40 | 100 | G325/40/100 | G405/40/100 | G455/40/100 | G505/40/100 | G555/40/100 | G605/40/100 |
50 | G325/40/50 | G405/40/50 | G455/40/50 | G505/40/50 | G555/40/50 | G605/40/50 | ||
3 | 60 | 50 | G325/60/50 | G405/60/50 | G455/60/50 | G505/60/50 | G555/60/50 | G605/60/50 |
Type of saddle clips
Proper grating specifications | |||
A-20 | B-20 | C-20 | Bearing bars at 20mm pitch |
A-25 | B-25 | C-25 | Bearing bars at 25mm pitch |
A-30 | B-30 | C-30 | Bearing bars at 30mm pitch |
A-40 | B-40 | C-40 | Bearing bars at 40mm pitch |
A-60 | B-60 | C-60 | Bearing bars at 60mm pitch |
Process flow
(1) materian
(2) pressure welding
(3) cutting
(4) welding of ends bar
(5) surface treatment
(6) final shipment
Tolerance of grating steel
The allowed deviation of length is +0/-5mm, while the allowed deviation of width is +/-5 mm.
The non-perpendicularity of bearing bar is allowed no more than 10% of width of bearing bar.
Cross bar surface should not surpass bearing bar surface 1mm, beginning & end of cross bar should not
surpass the end surfaces of two sides of grating 2mm.
Product Picture