Ningbo Superior Machinery and over 30-year-old factory with ISO 9001:2008 certificated, manufacturing screws, barrels for injection and extrusion processing. Specifications of our Ni-based bimetallic barrel: Basic Material for body: superior pre-hardening material 4140 Alloy powder: Nickle-based self-melting alloy powder from American Wall Colmonoy Corporation Processing: vacuum sintering cladding ( we're the first and unique Chinese factory applying this technology to barrel production since 2009!) Hardness: 56-60 HRC Service life: 3~6 times than bimetallic barrels processed by high temperature centrifugal casting Application: halogen-free plastic, the high abrasion, corrosion materials adding high fibre, carbon fiber, mineral fiber, ceramic, magnetic powder, metal powder etc. Advantage: more stable molecular structure, higher density of the alloy power than common bimetallic barrels.
Machine Screw
Materials Brass Carbon Steel Stainless Steel Surface Passivation Nickel Zinc Plating Size M14 to M8
We produce various screw according to customers' specfication. Material can be steel, stainless steel or brass.
Best Supplier of Screw products Please let us know standard and details order requirement Or Please sent us drawing with details specification We will offer our best service for you Name Screw Materials Steel Stainless Steel Brass Alloy Surface Passivation Anodize Zinc Nickel TIN
We produce sealing screw for electricity meter, and electrical use. Material can be steel, stainless steel or brass.
We produce various set screw for metering, electrical, auto and furniture use. Material can be steel, stainless steel, or brass.
Grub Screw
We produce anti-theft screw of various specifications. Material can be steel, stainless and brass.
