name
water grate
materials
grey cast irong-20
technics
the design canbe based on customer re change, after the jet blackasphalt, product appearance bright, neat, oxidationresistance
characteritics
has strongcompressive, bending, impact resistance, heat resistance, coldresistance, abrasion resistance, acid and alkali resistance, agingresistance, not easy to deformation characteristics.at the sametime, noise prevention, theft, fall prevention, anti-skidcharacte
uses
corrosion products applicable to awide range, can be used in city construction in the tap water,municipal sewage pipeline inspection well manhole, heating, gas,postal, telecommunications, communications cable conduit well,street lamp electricity pipeline fire well, all kinds of valvewell, anti-corrosion engineering, minggou sheets, and according tothe special needs of the user design and production.
no.
item
description
1
bearing bar
25x3, 25x4, 25x4.5, 25x5, 30x3, 30x4, 30x4.5, 30x5, 32x5, 40x5,50x5, 65x5, 75x6, 75x10---100x10mm etc; i bar: 25x5x3, 30x5x3,32x5x3, 40x5x3 etc
us standard: 1''x3/16'', 1 1/4''x3/16'', 1 1/2''x3/16'', 1''x1/4'',1 1/4''x1/4'', 1 1/2''x1/4'', 1''x1/8'', 1 1/4''x1/8'', 11/2''x1/8'' etc
2
bearing bar pitch
12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 32.5, 34.3, 35, 38.1, 40,41.25, 60, 80mm etc
us standard: 19-w-4, 15-w-4, 11-w-4, 19-w-2, 15-w-2 etc.
3
twisted cross bar pitch
38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc
4
material grade
astm a36, a1011, a569, q235, s275jr, ss304, mild steel & low carbonsteel, etc
5
surface treatment
black, self colour, hot dip galvanized, painted, spraycoating
6
grating style
plain / smooth, serrated /teeth, i bar, serrated i bar
7
standard
china: yb/t 4001.1-2007, usa: ansi/naamm(mbg531-88),
uk: bs4592-1987, australia: as1657-1992, japan:jis