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.
Drywall screws are used for fastening sheets of drywall to wall studs or ceiling joists. Compared to regular screws, drywall screws have deeper threads. This helps prevent the screws from being dislodged easily from the drywall. Drywall screws are made of steel.
2ml shell vial with crew cap
Simple, economic and convenient
Suitable for use in Shimadzu VP series, rack 16,Borosilicate glass,olyethylene,Starburst top feature for easy needle
penetration,Cap to be packed separately from vials
Self-tapping screws have a wide range of tip and thread patterns, and are available with almost any possible screw head design. Common features are the screw thread covering the whole length of the screw from tip to head and a pronounced thread hard enough for the intended substrate, often case-hardened.
Pedicle screw is used to a spine system for kyphoplasty.
1. Mono & Poly axial screw
2. Poly axial screw provides variation of 34º in angle
3. wide contact area with rod and bolt
4. optimal stress distribution
High quality white plated DIN 7504K corrugated screws
Concrete screws DIN 7504K white plated
Material: Carbon Steel
Produce according to customer requirements
The 7504K screw structure consists of 3 parts:
Screw part: Designed in the form of a drill, the head is in direct contact with the surface
Threaded body: Threaded screw body for twisting deep into wood or concrete surfaces
Drill head: Designed in the form of a hexagon, with this head requires a specialized machine to be able to use the screw quickly and accurately.
DIN 7504K corrugated screws white plated
Material: Carbon Steel
Produce according to customer requirements
The 7504K screw structure consists of 3 parts:
Screw part: Designed in the form of a drill, the head is in direct contact with the surface
Threaded body: Threaded screw body for twisting deep into wood or concrete surfaces
Drill head: Designed in the form of a hexagon, with this head requires a specialized machine to be able to use the screw quickly and accurately.
