Technology

Welded galvanized grating. The cross bars are welded onto bearing bars with the high pressure resistance welding machine and then cutting, banding, surface treatment.
Press-locked galvanized grating. The cross bars are pressure locked onto the bearing bars with grooving and then welding and hot dipped galvanizing.
Features & Characteristics

High strength. The strength and the toughness are much higher than cast iron. Can be used for terminals, airport and other large-span and heavy loading condition.
Hot-dip galvanized treatment. Good rust-proof property, maintenance-free replacement.
Anti-theft design. The cover and the frame is joint with hinge offering security, safety and open convenience.
Savings investments. Large-span. Less lost for heavy load compared with cast iron products. Cost can be saved for the risk of being stolen or crushing one if cast iron is uses.
Aesthetic outlook. Simple lines and silver appearance meeting the modern trend.
The best drainage. Leakage area of 83.3 percent, more than twice of cast iron products.

Applications

Galvanized grating are designed and manufactured for various industrial and civil constructions in city road, gardens, yard, airport, railway and industrial engineering.

Hot dip galvanized steel grating is the best choice for steel platforms in airports. Grating with 30 × 3 mm thick load bearing bars with a pitch of 30 mm and traverse bars at 50 mm or 100 mm is the suitable one.
 

Product Description
Hot DIP Galvanized steel grating for floor and trench

HEBEI ZHUOTE is a leading professional manufacturer of steel grating, stair treads, handrails, trench grating, grating clips, cable trays in China and 75% of grating is regularly exported to USA, AUS, Kuwait, Chile, Singapre, Indonesia, Africa, UK and so on. Our grating always have a good reputation in the world.

Hot DIP galvanized steel grating has three kinds of steel gratings, there are Plain Style Steel Grating, Serrated Style Steel Grating and I Bar Type Steel Grating. They are widely used in steel structure platforms, stair treads, sidewalks, drainages and well covers etc. We can design and manufacture 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; The specification of I-section type is 25 x 5 x 3, 32 x 5 x 3, 38 x 5 x 3, 40 x 5 x 3, 50 x 5 x 3, 50 x 7 x 4, 55 x 7 x 4, 60 x 7 x 4, 65 x 7 x 4, 70 x 7 x 4, 75 x 7 x 4, etc.

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 and 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):
38.1, 40, 50, 60, 76, 80, 90, 100, 101.6, 102, 135mm and so on

4) Material:
Mild Steel (Low Carbon Steel) or Stainless Steel

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.