I bar steel grating

Specifications steel bar grating:

1. Carbon steel or stainless steel.

2. painted or hot dip galvanized

3.Plain, Serrated,I-Section style

Steel Gratings Most—Popular Specifications 1. The grating that the pitch between bearing bars is 30mm, is most widely used type in industrial field. Among normal type, it has the strongest resistance  to surface lash.
2. The grating that the pitch between bearing bars is 40mm is the most economical and lightest type. It is the best choice for you on occasions that the clear  span is small. 3. The grating that the pitch between bearing bar is 60mm and the pitch between cross bars is 50mm is developed specially for mining industry. 4. The grating with the pitch of 30mm between bearing bars and of 76mm between cross bars is the most popular type used home and abroad. It is proper for many applications such as walkways, platforms,etc.   Surface Process of Gratings 1.  Normally , Hot galvanizing will  be carried out after end welding process ,  When the thickness of bearing bars is not less than 5mm,the weight of average Zinc Layer will not be less than 610g/m2 .When the thickness of bearing bars is less then 5mm,the weight of average Zinc Layer will not be less than 460g/m2 . The quality and requirements after hot galvanizing are subject to the standards of GB/T 13912.
2. To gain protection layer through the ways of spraying, brushing and soaking.     Steel Grating Standards Our steel grating products are produced to meet the listed standards:

Steel Grating Standard	Steel Material Standard	Hot Dip Zinc Coating Standard
China Standard: YB/T4001—1998	China Standard: GB700—88	China Standard: GB/T13912-92
USA Standard: ANSI/NAAMM(MBG531—88)	USA Standard: ASTM(A36)	USA Standard: ASTM(A1 23)
UK Standard: BS4592—1987	UK Standard: BS4360(43A)	UK Standard: BS729
Australia Standard: ASl 657—1 992	Australia Standard: AS3679	Australia Standard

  Steel Grating specification