We offer steel grating. 1.material:mild steel or stainless steel2.typesof steel grating:we produce three kinds of steel gratings, they are plain style steel grating, serrated style steel grating and I bar type steel grating. They are widely used in steel structure platforms, stair treads, sidewalks, drainages and well covers etc. 3.usage:they are widely used in municipal engineer walkways, shools, residential quarters, garden facilities, stadium, port, industry, oil and chemistry projects etc . 4.surface:untreated, painting or hot dipped galvanizing5.specification of steel grating6.packaging:bulk, nude or as the customers' requirement7.supply ability:100 tonsweek8.moq:1ton9.fob tianjin:usd500.67-879.24square meter10.delivery time:15-20 day after receiving the advance payment11.payment terms:tt, lc at sight, and western unionno item description1 bearing bar 25x3, 25x4, 30x3, 30x4, 30x5, 32x5, 40x5, 50x5, .75x10mm2 bearing bar pitch 12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 34.3, 35, 40, 41, 60mm. Us standard: 1"x316", 1 14"x316", 1 12"x316", 1"x 14", 1 14"x 14", 1 12"x 14" etc. 3 cross bar pitch 38, 50, 76, 100, 101.6mm4 material q235, a36, ss3045 surface treatment black, hot dipped galvanized, paint6 thickness thickness3mm, depth 19mm7 standard china: ybt 4001.1-2007usa: ansinaamm(mbg531-88)uk: bs4592-1987australia: as1657-1985