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Anti corrosion high quality galvanized steel grating stair treads/ceiling/deck plates 

Steel bar grating is a good choice for strength, safety, long-term cost and durability. Bar Grating consists of a series of bearing bars, welded (or otherwise joined) at various intervals to perpendicular cross bars to form a load-bearing panel. It is available in a wide selection of panel sizes; bar sizes, and material types.

Stair treads are the horizontal sections of stairs that serve as the step surface of each step. 

A. Material:

Low Carbon Steel or Stainless Steel

B.Surface Treatment: 
Untreated, Painting or Hot Dipped Galvanizing 

C.Specifications:

--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.

--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

--Cross Bar Pitch (center to center):
38, 50, 76, 100, 101.6mm etc, also be according to client's requirement and 50, 100mm are recommended, America standard is available.

Steel grating standards: 

A. China: YB/T4001-1998 

B. USA: ANSI/NAAMM (MBG 531-88) 

C. UK: BS4592-1987 

D. Australia: AS1657-1988 

E: Japan: JIS  

Application:

They are widely used for platform, trestles, covers, ladders and fencing in many fields such as petroleum and chemical industry, electric power, water supply, sewage treatment, ship building, parking lots, city construction, environmental engineering.

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