specification of gutter grating

material

ASTM A36,A1011,A569,Q235,S275JR,SS304,Mild steel&low carbon steel,etc.

Bearing bar pitch

15-30, 40, 60, 80, 90 mm etc. with 30, 40,60mm recommended.

cross bar pitch

any greater than 30mm is ok. with 50, 100mm recommended. 

surface treatment

G-hot-dip galvanization(G is usually omitted)

P-painting

U- untreated

bearing bar shape

F- plain surface (F is usually can be omitted)

S-serrated surface

I-the section is of ‘I’ type