... 2.large diameter bender 3.NC bending,3D Tube and pipe bending machine/bender1.Stainless steel,carbon steel2.large radius bender3.NC ... middle frequency pipe bender is rotating the pipes by rocker to bend pipes, and the bending steel radius depends on the length ... . In recent years, with aircraft terminal, the railway station tents and sports venues, exhibition center, large factory etc. Large top frame ...