Ten product lines covering injection molding, extrusion, rubber, planetary and XPS foaming applications — nitrided and bimetallic constructions, built to drawing or machine model.
We are a professional manufacturer and supplier of all kinds of bimetallic screw & barrel and twin screw & barrel in China, with a plant area of more than 14,000 m². We integrate R&D, production and sales, and dedicate ourselves to cobalt-based tungsten carbide super-hard bimetallic screw barrels with high wear resistance, high corrosion resistance and high hardness.
Our processing technology covers special bimetallic barrels for halogen-free flame-retardant, high-fiberglass, magnetic, high-calcium-powder, Bakelite and XPS engineering plastics.
Every set passes through our own full production line — no step outsourced.
38CrMoAlA forged steel, cut to length with material certs on file.
Rough and fine lathing, then conditioning for a tough core.
CNC milling of screw flights to drawing or reverse-engineered profile.
Gas nitriding (4 furnaces) or centrifugal bimetallic casting (4 furnaces), both in-house.
Fine grinding of bore and flights to tolerance ±0.02 mm.
Hardness, alloy-layer and dimensional inspection on every set before packing.
Practical guides on wear, corrosion and barrel life — written for plant engineers.
Why corrosive resins eat nitrided bores — and which alloy chemistry survives them.
Read more →Inside the centrifugal casting line: alloy selection, solidification curve, layer control.
Read more →Glass fiber, calcium carbonate, regrind: matching barrel construction to abrasive fillers.
Read more →Operating habits that double the service life of parallel and conical twin sets.
Read more →Our engineers will recommend nitrided or bimetallic for your resin — with a quotation, not a guess.
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