ERW casing is widely used as it has better performance in precise size,collapse,explosion ability and low prices than seamless

casing.Our factory adopts the first-class production line in China,which is able to manufacture N80 grade steel casing,by introducing 

the rolling mill and flying cut-off of Nakata Mfg.Co.,Ltd.(Japan),high-advanced FF-X forming technology in the world,which the 

perfect universal usage of rollers,esay to operate,low operation cost and the location therefore can be precisely digital-controlled

to ensure the stability and precision of forming and thereafter the products with excellent quality.