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管材冷加工生产在国内外一般均采用拉伸法及轧制法。轧管机一般有LD二辊轧管机(环孔型冷轧管机)、LD三辊轧管机及旋转式轧管机等三种形式。各种类型轧管机用途和特性均不相同,根据产品要求可进行选择。 LD—30三辊冷轧管机供轧制外径15mm～30mm,厚度0.1～2.0mm范围管材用,可直接轧制出所需要的产品,但是,LD三辊冷轧管机一般轧制速度仅为60～90摆/分,送进量2～6毫米/次,每台每班轧制200米管坯料,生产速率较低。其次,轧管机安装占地面积比拉伸机大,一般一台LD三辊冷
Cold-rolled pipe production at home and abroad are generally used tensile and rolling method. Pipe mill generally LD two roll mill (ring hole cold rolling machine), LD three-roll pipe mill and pipe mill and other three forms. Various types of rolling mill uses and characteristics are not the same, according to product requirements can be selected. LD-30 three-roll cold rolling machine for rolling diameter 15mm ~ 30mm, thickness 0.1 ~ 2.0mm range of pipe, can be directly rolled the desired product, however, LD three-roll cold rolling mill general rolling speed For 60 ~ 90 pendulum / min, feeding amount of 2 to 6 mm / time, each class rolling 200 meters tube material, the production rate is low. Second, the installation of pipe rolling machine covers an area larger than the stretching machine, usually a cold LD three rolls