... in manufacturing and exporting many kinds of steel gratings with the best quality, competitive price and faster ... , defense project, chemical factory and so on.The steel grating can be classified into Plain Style ... 1) Bearing Bar (Load Bar) Specifications (mm):The specification of plain type and serrated type bearing bar is 20 ... x 3 to 100 x 10,the specification of Isection type is 25 x 5 x 3, ...