This type of steel grating is made of plain flat bar with round bar, not twisted bar by hand. Each flat bar is drilled in the middle, and round bar is inserted in, then flat bar and round bar are welded by hand.
Features:
1) Bearing bar specification: 20 x 3 to 100 x 6
2) Bearing bar pitch: 12.5, 15, 30, 40, 60mm etc, also be according to client's requirement and 30, 40, 60mm are recommended
3) Cross bar pitch: 38, 50, 76, 100mm, also be according to client's requirement and 50, 100mm are recommended
4) Material: Mild steel or stainless steel
5) Surface treatment: Untreated, painted or hot-DIP galvanized
6) Steel Grating Standards:
A) China: YB/T4001-1998
B) USA: ANSI / NAAMM (MBG531-88)
C) UK: BS4592-1987
D) Australia: AS1657-1985
Audited Supplier 
Audited Supplier 
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