"cage welding machines", which is used to make filter bag cages, used in baghouse to support filter bags. Ring space is programmable and bag cage is pulled by step motor; Ring space precision is 0.1mm; Pulling speed is 0.4m/s. We have round and flat(oval) cage welding machines, with high efficiency, good quality and very competitive price. Our website has more details. We have already sold our machines to Iran, Taiwan, and Europe, many customers come back to order more lines.