Ningbo Jingu Machinery Co., Ltd specialized in design and manufacture of bi-metallic screw and barrel, the core parts of plastic and rubber machinery.

With more than 20 years’ experience in this line, we focus on bringing in advanced technique and equipments both at home and overseas. To greatly meet our customers’ needs and ever-developing requirements for precision machining, we’re doing our best in workers’ training, technique improving and R&D in new products.

If you have special requirements on the function and lifespan of screw and barrel, we s est you that the European and American material should be used as the based material. Meanwhile, our company we can provide precision machining service as European and American manufacturers do.

Equipped with Hardening and Tempering Furnaces, Gas-nitriding Furnaces, High-temperature vacuum quenching furnaces and vacuum tempering furnaces, we can guarantee the best Heat Treatment for the screw and barrel.

To make high quality bimetallic and barrel, the company uses most advanced centrifugal casting equipment for bimetallic barrel and has full-automatic alloy plasma spraying machines for bimetallic screw.