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Injection Barrels


Jinhua Machinery Bimetallic barrels meet the needs for wear and corrosion resistance or more than 90% of all injection molding requirements.

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 inches (6.1 meters) - 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 you process.

 X-800: High wear resistance for injection molding

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


X-102: For general purpose use

  • Composition: Nickel-rich iron-boron alloy.
  • Cost-effective choice for either injection molding or 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


X-306: For highly corrosive environments

  • One of the most corrosion resistant alloys in the industry. A nickel/cobalt base alloy or the most severe corrosive atmospheres.
  • Applications include: highly corrosive environments, acidic salts, material with flame retardants, Teflon, blowing agents, PVDF.