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| Brand Name : | CHENG HE |
| Model Number : | Q195 Q235 Q275 Q345 SS304 316 304lL 316L |
| Certification : | ISO9001 |
| Payment Terms : | D/A, L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability : | 100T/DAY |
| Delivery Time : | 15-20DAYS |
With Chequer Plate Hot Gavlanized Concealed manhole cover for Walkway and Roads
Description:
Concealed manhole cover is used walkway.Metal Bar Grating is the workhorse of the industrial flooring market and has served industry for decades.Strong and durable with an exceptional strength-to-weight ratio, metal bar grating can be easily fabricated to nearly any configuration.The high percentage of open area makes bar grating practically maintenance-free and all products are fully recyclable.
Manufactured by assembling a series of equally spaced metal bars to connecting cross members, bar grating is available in three popular materials; mild carbon steel, 6000 series aluminum, and 300 series stainless steels. Additionally, Grating Pacific has the capacity to produce gratings constructed with other specialty metal alloys
A manhole cover is a removable plate forming the lid over the opening of a manhole, to prevent anyone fromfalling in and to keep unauthorized persons out
Material:
Mild Steel (Low Carbon Steel ASTM A36 or Q235) , Stainless Steel
304 or 316
Surface Treatment:
Untreated, Painting or Hot dip Galvanizing
Steel grating standards:
A) China: YB/T4001-1998
B) USA: ANSI/NAAMM (MBG531-88)
C) UK: BS4592-1987
D) Australia: AS1657-1985
Process Flow
(1) materian
(2) pressure welding
(3) cutting
(4) welding of ends bar
(5) surface treatment
(6) final shipment
Packaging
1. Strap Packaging: generally applicable to relatively neat grid of
steel plate.
2. Pallet Packaging: Usually for export packing.
3. Screw Rod Fixation: using four screws bar through the steel
grating aperture, with screw locking packaging methods.
Feature:
100% waterproof, Weatherproof, Corrosion free material.
ZERO SCRAP VALUE hence it is Burglarproof.
High strength to weight ratio hence light weight & easy to handle.
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

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