Serrated Steel Grating (galvanized)

Serrated Steel Grating 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 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 bars is 60mm and the pitch between cross bars is 50mm is developed specially for mining industry, it solves the problem of mineral splash on the plate .So it is often appointed to use in processing works, of 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. Steel grating specifications SeriesPitch of Bearing barCross-bar PitchSpecification of bearing bar load(width × thickness)20×325×332×340×320×525×5130100G203/30/100G253/30/100G323/30/100G403/30/100G205/30/100G255/30/10050G203/30/50G253/30/50G323/30/50G403/30/50G205/30/50G255/30/50240100G203/40/100G253/40/100G323/40/100G403/40/100G205/40/100G255/40/10050G203/40/50G253/40/50G323/40/50G403/40/50G205/40/50G255/40/5036050G253/60/50G253/60/50G403/60/50G205/60/50G255/60/50SeriesPitch of Bearing barCross-bar PitchSpecification of bearing bar load(width×thickness)32×540×545×550×555×560×5130100G325/30/100G405/30/100G455/30/100G505/30/100G555/30/100G605/30/10050G325/30/50G405/30/50G455/30/50G505/30/50G555/30/50G605/30/50240100G325/40/100G405/40/100G455/40/100G505/40/100G555/40/100G605/40/10050G325/40/50G405/40/50G455/40/50G505/40/50G555/40/50G605/40/5036050G325/60/50G405/60/50G455/60/50G505/60/50G555/60/50G605/60/50 Steel Grating Standards Our steel grating products are produced to meet the standards: Steel Grating StandardSteel Material StandardHot Dip Zinc Coating StandardChina Standard: YB/T4001—1998China Standard: GB700—88China Standard: GB/T13912-92USA Standard: ANSI/NAAMM(MBG531—88)USA Standard: ASTM(A36)USA Standard: ASTM(A1 23)UK Standard: BS4592—1987UK Standard: BS4360(43A)UK Standard: BS729Australia Standard: ASl 657—1 992Australia Standard: AS3679Australia Standard: ASl650