... day 4. Best servicse Mild steel grating is one of the most widely used steel gratings for industry lines. ... Metallic Products Co.,Ltd is one of the largest steel grating manufacturer in China. We have 4 running ... yearly capacity of 30,000tons. Our grating and related steel products have exported to more than 30 countries. Choose ... 30, 30.16, 30.3, 34.3, 35, 40,41,60mm. US standard: 1"x3/16", 1 1/4"x3 ...