Zhejiang Bohai Machinery Co from China, a professional designer and manufacturer for all kinds of screws and barrels ,and especially specialize in manufacturing extruder single and conical twin screw barrel.

We have 20 years experience of supply this kinds of products, we have different designs of screw barrel to meet customer's demands according to different products.

Our products are suitable for production of???PC profile,granulating,pipe,sheet,blow film,plastic recycling etc...