our factory make many types steel grating long history , with ISO-9001:2008 and SGS certificated .
we have big export experience for steel bar , so i can show more detail informations as follows .
1> about material : galvanized or stainless steel or aluminum .
stainless steel has 304 ,316 ,316L , SUS316L , it has 13% nickel , endure more long days and life . so not rust and anti-corrsion .it is most expensive .
aluminum material steel grate is very popular in European market , because it is bright and light weight .
it widely application roof . it is best material .
2> surface treatment is galvanized or painted or ungalvanized . it is customer choose .
3> type has four kinds ,
one is plain bar , the second one is serrated bar , third is I bar ( plain) ,last one I bar (serrated) .
bar centers at 20mm , this kind of grating fit for deck , walkway and ditch cover and so on .
bar centers at 30mm , this kind of steel grating fit for all kind of industrial platforms .
bar centers at 40mm , this kind of steel grates commonly used for belt corridor ,storage shelf ,sunshade grate etc .
bar centers at 60mm , it is best choice for walkshop ,meeting room,suspended celling .
5> width* thickness:
I bar: 25*5*3mm ,30*5*3mm ,32*5*3mm ,40*5*3mm .
USA standard: 1''*3/16'' ,1 1/4"*3/16'' ,1 1/2''*3/16'' etc.
if you are interest with our products ,no hesitate to e-mail me, i will offer competitive quote .
e-mail address:email@example.com .