Model 3Z adjustable RIDGER designed and manufactured by Shandong Tiansheng Machinery CO.,LTD is used for making ridge in the field after tillage.The main frame is made of retangular tube weled together,assembled wiith the angle adjustable disc ridging unit.The discs are made of qualified 65Mn steel plate with heat treatment.The machine is steady and durable,convenient for transport and easy to adjust and,operate and maintainence.