Straight seam steel pipes are steel pipes with welds parallel to the longitudinal direction of the steel pipe. The strength of the steel pipe is generally higher than that of straight seam welded pipes. Welded pipes with larger diameters can be produced from narrower billets, and welded pipes with different diameters can also be produced from billets of the same width. However, compared with straight seam pipes of the same length, the weld length is increased by 30~100%, and the production speed is lower. So what are its processing methods?
1. Forging steel: A pressure processing method that uses the reciprocating impact of a forging hammer or the pressure of a press to change the blank into the shape and size we require.
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2. Extrusion: It is a steel processing method in which metal is placed in a closed extrusion cylinder and pressure is applied on one end to extrude the metal from a prescribed die hole to obtain a finished product of the same shape and size. It is mostly used for the production of non-ferrous metals. Material steel.
3. Rolling: A pressure processing method in which the steel metal blank passes through the gap (of various shapes) between a pair of rotating rollers. Due to the compression of the rollers, the material section is reduced and the length is increased.
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4. Drawing steel: It is a processing method that draws the rolled metal blank (shaped, tube, product, etc.) through the die hole to reduce the cross section and increase the length. Most of them are used for cold processing.
