The most common rolling method for desks and chairs

　　The most commonly used rolling method According to the different direction of roll rotation, aluminum alloy rolling can be divided into longitudinal rolling, horizontal rolling and diagonal rolling. According to the different roll system, aluminum alloy rolling can be divided into two rolls (a pair of -) rolling system, multi-roll rolling system and special roll system (such as planetary rolling, classed rolling, etc.) rolling. According to the different shape of the roll, aluminum alloy rolling can be divided into flat roll rolling and hole roll rolling. According to different product varieties, aluminum alloy rolling can be divided into plate, strip, foil rolling, bar, flat strip and shaped material rolling, pipe and hollow profile rolling.

　　Extrusion molding is a kind of transparent processing method that applies external force to the metal ingot in the container (extrusion cylinder) to make it flow out of a specific die hole, so as to obtain the required section shape and size. Several main extrusion methods widely used in industry are: forward extrusion method, reverse extrusion method, pipe extrusion method, continuous extrusion method, etc.

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