Grating Panel
Steel grating is basically consist of Bearing bar and Cross bar by automatic press welding machine as following chart:

Steel gratings are usually made of carbon steel and stainless steel. They are generally used as industrial platform, maintenance platform, stair treads, rain-proof sunshade, fences and trench covers. Widely used in the industry of power plant, oil refineries, petrochemistry, chemical plant, water and waste treatment plant, ship-building, offshore projects and civil construction (like roads, park) ., etc.

Steel Grating
Plain type, Serrated type, I Type and Serrated I type steel gratings are 4 basic kinds of gratings.

Bearing Bar (width * thickness)	19*2,19*3,20*2,20*3,20*5,25*3,25*4,30*5,40*5,50*5……..100*10,150*10mm
Bearing Bar Pitch (mm)	12.5, 15, 20, 25, 30, 34.3, 35.3, 40,41.25, 50, 60…(30, 40 mm are recommended)
Cross Bar Pitch (mm)	38.1, 50, 76.2, 100, 101.6 .(50, 100 mm are recommended)
Surface Treatment	Black/Untreated (U), Hot dip galvanizing (G), Painting (P)

Material
Mild steel, Stainless steel

Surface Treatment
Untreated, Painting or Hot DIP Galvanized.

Country	Steel Grating Standard	Galvanization Standard
China	YB/T4001-1998, YB/T4001-2007	GB/T 13912
USA	ANSI/NAAMM-MBG531	ASTM A123-89
UK	BS4592-2006	BS 729
Australia	AS1657-1992	AS/NZS 4680, AS1650