no painted no galvanized Untreated Steel Gratings
no painted no galvanized Untreated Steel Gratings
The press welded steel grating is made of load flat steel bar and cross bar, placed horizontally and vertically, and at an equal pitch apart, by welding with 200-ton hydraulic resistance automatic welding equipment, then cutting, punching and banding ends. But no painted no galvanized at last. 1) Type of steel grating: W-pressure welded grating; L- pressure locked grating; C- socket welding grating
2) Pitch of bearing bars ranges from 15-30mm, 40mm, 60mm, 80mm, 90mm etc. with 30, 40mm recommended.
Pitch of cross bars ranges from 30, 38, 50, 76, 100mm etc. with 50, 100mm recommended.
3) Sign of the shape of bearing bar: F-plain surface (F is usually can be omitted); S-serrated surface; I-the section is of "I" type.
Surface treatment: G- hot dip galvanizing (G is usually omitted); P-painting; U-untreated.
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