Pipes measuring length 4, the improved encoder measuring length of this approach is an indirect measurement, octagonal pipe size, by measuring the distance between the two end faces of the respective pipe reference point, and indirectly measure the length of pipe. At both ends of each pipe length measurement set a station car, the initial position is zero position, spacing L. Then move to the respective pipe length Editor tube ends running distance (L2, L3), L-L2-L3, is the length of the pipe. This measurement volume to overcome the huge steel production site environment is complex, octagonal steel, measuring mechanism can not pass through the lower support difficult shaped steel gantry and the like. This method is easy to operate, the measurement accuracy within ± 10mm, sunshine octagonal steel, repeatability ≤5mm. Measuring the length of a shaped tube, scale length measuring basic principle is: the outer ends are provided Shaped Steel grating, galvanized steel octagonal two fixed length, the use of rodless cylinder drive near both ends of the steel grating, using light interference realize the measurement of the length of the pipe. It is characterized by high accuracy. But the scale is expensive and difficult to maintain, the impact of dust and vibration are sensitive site. Sunshine octagonal steel | octagonal steel pipe manufacturers | virtues of Industry (certified merchants) Ltd. Liaocheng by virtue of Industry. Sunshine octagonal steel | octagonal steel pipe manufacturers | virtues of Industry (certified merchants) is Pipe Co., Ltd. Liaocheng virtue (www.meidegc.com) (www.meidegc.com) (www.mdwfg.com) (www.mdggc.com ) this year launched a new upgrade, the above picture is for reference only, please call the telephone or pictures on this page, for the latest information, contact: Hvdroxide.