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Extrusion Barrels


Strong and straight
The structural shell of Jinhua Machinery bimetallic barrels consists of a microalloy steel that maintains high strength and straightness after casting of the wear-resistant alloy lining. Unlike some barrel manufacturers, Jinhua Machinery can produce long barrels – up to 240 in. (6.1 m) – without resorting to butt welding. The benefit to you is a stronger, straighter barrel with no seams to trap polymers that can degrade and contaminate your process.

Test conditions: The German Plastics Institute, Darmstadt Germany, used standard molding equipment to inject 10 kg of nylon and polycarbonate materials containing 30 and 50% glass fibers through a 0.5 mm ø orifice in test specimens made of the barrel alloys.

Jinhua Machinery X-800 and X-102 barrels meet the needs for wear and corrosion resistance for more than 90% of all extrusion requirements.

X-800: Our best extrusion barrel

  • Composition: Tungsten carbide particles uniformly dispersed in a corrosion-resistant nickel alloy matrix.
  • Outstanding  resistance to both abrasive wear and corrosion
  • Essential for extrusion of hard-to-melt materials such as HMW-HDPE or LLDPE and of highly filled abrasive materials such as those containing 25% or more of mineral fillers (calcium carbonate etc.) or glass fibers.
  • Resists corrosive attack by aggressive volatiles released by polymers or additives.

X-102: For general purpose use

  • Composition: Nickel-rich iron-boron alloy.
  • Cost-effective choice for extrusion of unfilled or lightly filled polymers having good thermal stability.
  • Outlasts generic competitive barrels in comparative testing.


X-220: Higher-chromium iron-boron alloy

  • Premium general-purpose barrel.
  • A step up in resistance to corrosion and abrasive wear