A focused manufacturer and exporter of screw barrels for plastic processing machinery worldwide.
Henan Xiwang Machinery Equipment Co., Ltd. is a professional supplier of screw barrels, screws and related spare parts for plastic extrusion and injection molding machines. We have been manufacturing screw barrels for 18 years, operating a 14,000+ m² facility in Henan with 70–80 staff and an annual capacity of 3,000–5,000 sets. Our screw barrels run in plants across Turkey, the European Union, the USA, Brazil, India, Iran, Russia and Southeast Asia. We work with plastics processors, machine builders and spare-parts distributors who need reliable, precisely machined components.
Our products cover parallel twin screw barrels, conical twin screw barrels, single screw barrels, rubber and planetary screw barrels, plus matched spare parts, available in nitrided steel and bimetallic constructions. Maximum screw diameter is Ø300 mm. Every set is manufactured to drawing or to a confirmed machine model, then inspected before packing.
We concentrate on screw barrels and matched spare parts, allowing deep process control over materials, machining and heat treatment.
Hardness, runout and dimensional inspection on every set. Inspection documentation is available with your shipment.
We support distributors, machine builders and end users with stable supply, flexible quantities and consistent quality.
Established 18 years ago, we run a 14,000+ m² facility in Henan with nitriding and bimetallic alloy treatment both done in-house.
Machining, heat treatment and alloy lining are all handled in our own workshop, so we control geometry, hardness and lead time.
Rough and finish turning of screws up to Ø300 mm and 9 m in length.
Bore drilling and deep-hole reaming with German super-hard tooling, then honing before alloy lining.
Flight profile machining to drawing, including barrier and mixing sections.
Gas nitriding to HV 900–1100 with controlled case depth.
Fully automatic large-scale centrifugal bimetallic casting, 2–5 mm alloy layer, with Japanese Fuji high-temperature computer controllers holding the temperature curve.
Quenching and tempering before final machining to stabilise the steel.
Outer diameter grinding and polishing of flights and barrel bores.
Intelligent Leeb hardness testers and alloy-layer thickness testing on every bimetallic set, plus bore gauges and dimensional checks.
Spectral analysis on every batch of 38CrMoAlA and alloy steel before machining.
We ship to more than 30 countries. Our established markets include:
Each screw barrel set follows a standardized QC workflow: incoming material verification, in-process dimensional checks, post-heat-treatment hardness testing, final runout and dimension inspection, then moisture-proof export packing.
Yes. Send us a drawing, the machine model, or the worn part with basic dimensions. We reverse-engineer the geometry and manufacture a matched set, confirming the drawing with you before production.
Standard options include 38CrMoAlA nitrided steel and bimetallic (alloy-lined) barrels, selected according to your resin, filler content and expected service life.
Lead time depends on size, material and heat treatment. Because machining is done in-house, we confirm a realistic schedule together with the quotation.
Each set is rust-protected and fixed inside a wooden case with clear marking, suitable for sea, air and express shipment.
Tell us your machine model or send your drawing — we will respond with a technical proposal.
