... Jiulong Machinery Manufacturing Co.,Ltd is the largest steel grating manufacturer in China whose capacity is 50000 ... Our products are a part of construction. We produce steel grating, stair tread, fence,clips, chench cover, handrail ... Bearing bar(load bar):20x3 ..... 75x10 mm.2. Bearing bar pitch: 12.5, 15, 20, 23.85, 25, 30 ... 1/2"x 1/4" etc.3. Cross bar pitch: 38,50,76,100,101.6mm4. Material: Q235, ...