Payment & Shipping Terms:
|Material:||Q195 Q235 Q275 Q345 SS304 316 304lL 316L||Name:||With Key Hole Tray Stainless Steel Concealed Manhole Cover For Drain And Roads|
|Size:||1000*850 850*700 850*570||Width:||0.1-2m|
|Shape:||According To Drawing||Height:||10-300mm|
With Key Hole Tray Stainless steel Concealed manhole cover for Drain and Roads
They usually feature "pick holes," in which a hook handle is inserted to lift them. Pick holes can be concealed for amore watertight lid, or can allow light to shine through. A manhole pick or hook is typically used to lift them, thoughother tools can be used as well, including electromagnets.
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.
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
Mild Steel (Low Carbon Steel ASTM A36 or Q235) , Stainless Steel 304 or 316
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
(2) pressure welding
(4) welding of ends bar
(5) surface treatment
(6) final shipment
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.
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.
- We can provide free steel bar grating samples of small sizes, but customers need to pay the express cost.(This can be discussed)
- OEM is accepted. We have technical engineers. Then we can design steel bar grating for customers’
projects, and make
products according to customers’ drawing.
- Once receiving customers’ inquiries. Our company promises to provide services within 24 hours
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 last?
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.
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