Floor forge end plate welding carbon walkway steel grating Jakarta
Metal bar grating can be defined as a series of metal bars
positioned vertically, placed an equal distance apart and joined by
cross members to form a rectangular or reticuline pattern.
Typically manufactured from mild carbon steel, 6000 series aluminum
and 300 series stainless steels, bar gratings are also available in
specialty metal alloys to suit nearly any application.
The vertically positioned bars are designated as the bearing bars.
These bars range in size from 3/4" x 1/8" for light pedestrian
traffic to 7" x 1/2" for extreme vehicular loads. Typically, the
spacing of the bearing bars is indicated in sixteenths of an inch,
measured from the center of one bar to the center of the adjacent
bar. This center to center or on center spacing ranges from 7/16"
to 19/16" (1-3/16") on standard grating products. Standard gratings
are also available with wider spacings providing an even greater
open area, but should not be specified without consulting the
manufacturer. Heavy Duty grating products are commonly manufactured
with bearing bar spacings ranging from 15/16" to 38/16" (2-3/8") on
The bars used to secure the position of the bearing bars are
commonly designated as the cross bars. Crossbar profiles vary
according to the method of assembly and material selected. As with
bearing bars, cross bar spacing is measured as on center spacing.
The customary cross bar spacing is 4" on center. On special order,
2" on center and other special spacings are also available.
Proper specification of bar gratings includes a determination of
load conditions, effective unsupported clear span, flooring
surface, trim and finish. Appropriate consideration of these
elements plus any features unique to their particular application
will allow the specifying authority to select products that will
provide years of continuous service.
SPAN – In grating nomenclature, span serves a dual role in defining
two significant features. First, unsupported span indicates the
clear distance between effective points of support for the grating.
Once the specifier has established the design load and acceptable
deflection criteria, grating selection will be dictated by
determining the maximum unsupported span and consulting the load
tables on the pages that follow. Secondly, span indicates the
overall finished length of the grating panels (parallel to the
bearing bars) as they are supplied to the customer.
WIDTH – The overall dimension of the grating panel measured
perpendicular to the bearing bar span is designated as the panel
width. Commonly manufactured and stocked in 24" and 36" nominal
widths, grating panels can easily be supplied in a variety of
widths to suit the needs of any application. For non-stock widths,
consult the Panel Width Chart on page 17 of this catalog.
Additionally, custom widths can be shop fabricated to hold any
SERRATED SURFACE– The excellent drainage and self-cleaning
characteristics of plain surface grating make it suitable for the
majority of applications. In the presence of materials which could
cause the top surface of the bars to become slippery, the optional
serrated surface should be considered. When serrated surfaces are
specified, the bearing bar depth must be increased 1/4" greater
than the sizes shown in the load tables and selection guides to
provide the equivalent strength of non-serrated bars.
The product decsription:
|Common Specification of Steel Grating|
|Remarks: Special Material, High Zinc Coating and New Style can be
ASTM A36, A1011, A569, Q235, S275JR, Stainless steel 304/316,
Mild steel & Low carbon steel, etc
(Width x Thickness)
25x3, 25x4, 25x4.5, 25x5, 30x3, 30x4, 30x4.5, 30x5, 32x5, 40x5,
50x5, 65x5, 75x6, 75x10…..100 x10mm etc;
I bar: 25x5x3, 30x5x3, 32x5x3, 40x5x3 etc
US standard: 1''x3/16'', 1 1/4''x3/16'', 1 1/2''x3/16'',
1''x1/4'',1 1/4''x1/4'', 1 1/2''x1/4'', 1''x1/8'', 1 1/4''x1/8'', 1
|Bearing Bar Pitch|
12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3,32.5, 34.3, 35, 38.1, 40,
41.25, 60, 80mm etc.
US standard: 19-w-4, 15-w-4, 11-w-4, 19-w-2, 15-w-2 etc.
|Twisted Cross Bar Pitch||38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc|
|Surface Treatment||Untreated(black), Hot-dipped galvanized, Powder coated,
Electroplate, Painting or as per customers' requirement.|
|Grating Style||Plain / Smooth, Serrated / Teeth, I bar, Serrated I bar|
(1) Bandage and Paperboard: Generally applies to neat steel plate;
(2) Screw Locking Method: Use 4 screw rods through the aperture of
the steel grid, for high strength;
(3) Steel Pallet: Traditional export packing.
|Payment Term||T/T, L/C, Western Union, Credit Card, Alibaba Trade Assurance|
|Product Name: Metal Serrated Steel Grid Grating To Construction