Shaped steel production knowledge (a) Subjects refers to the so-called special-shaped pipe section is a closed hollow section, a non-circular shape, or round but although the pipe wall thickness varies along the length direction, or, having circular but including surface, an outer surface of the pipe with fins on the inner and outer surfaces collectively referred to as special steel pipe. Such kind of steel pipe section is pretty much. Compared with ordinary steel, special steel pipe geometry accuracy, especially cross-sectional dimensions, high precision, and with non-closed hollow section shaped metal phase concept is what shaped tubes pointed sharp shaped steel tubing, rectangular tube, square tube deformation Turkish first four roller mechanism in the tube cross section at the center line, Jining Pipes, sharp rectangular tube formation mechanism and ordinary rectangular tube by bending a corner is different, it relies on the rolling force of the rolls, by arc arch produce compressive force F, shown in Figure 2, the corners of the steel strip to plastic deformation so that shaped pipe, rectangular pipe, shaped tubes, the tube is filled from the corners. Angle arc arch pressure on Turkey filled the first four rolls in a certain arc acting on the same cross-section of the steel strip, shaped tubes, satisfies the conditional expression (1), you can roll pressure through the corner of the metal to plastic deformation, the formation of sharp corners. Jining shaped tube shaped pipe _ _ virtue of Industry (certified merchants) are provided by virtue Liaocheng Industry Co., Ltd. Jining shaped tube shaped pipe _ _ virtue of Industry (certified merchants) is a virtue Pipe Co., Ltd. Liaocheng (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.