With Key Hole Tray Hot Gavlanized Concealed manhole cover for Drain and Roads

Description:

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.

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

Materials & Finishes

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

We provide regular size perhaps you think not suitable, it doesn't matter! Please put your actual measurement size tell us, we can produce according to your needs and requirements for the size . If you want to know the price of our products, please do not hesitated to call us or email to us.

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.

- 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

Product Picture