Barrel screws
Machinery for working rubber or plastics or for the manufacture of products from these materials, not specified or included elsewhere in this chapter; parts thereof: > Parts: > Barrel screws
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 8477.90.45.01
Chrome-Plated Single Screw for Injection Molding Barrel
Chrome-plated single barrel screw optimized for injection molding machines processing ABS and nylon resins. It is a key part for plastics manufacturing machinery, fitting HTS 8477.90.45.01. The plating provides corrosion resistance in high-pressure environments.
Variable Pitch Progressive Screw for Profile Extrusion
Variable pitch progressive cavity barrel screw for PVC window profile extrusion lines. Part of plastics profile shaping machinery, HTS 8477.90.45.01. Progressive design ensures consistent output for complex profiles.
Three-Zone General Purpose Barrel Screw
Standard three-zone (feed, compression, metering) barrel screw for general-purpose plastics extruders processing LDPE and PS. Fits HTS 8477.90.45.01 as universal plastics machinery part. Cost-effective for multi-resin operations.
Nitrided Bimetallic Barrel Screw
A high-wear-resistant barrel screw with a bimetallic liner and nitrided base material, designed for single-screw extruders processing PVC and other plastics. It falls under HTS 8477.90.45.01 as a specialized part for machinery working plastics or manufacturing plastic products. The nitriding enhances durability against abrasive materials.
Hardened Alloy Steel Barrel Screw for Twin-Screw Extruder
A precision-ground, hardened alloy steel barrel screw for counter-rotating twin-screw extruders used in compounding thermoplastics like polypropylene. Classified under HTS 8477.90.45.01 as a part of plastics processing machinery. Its modular design allows for high-torque plasticizing.
High-Temperature Bimetallic Screw for PET Extrusion
Bimetallic barrel screw engineered for high-temperature extrusion of PET for bottle preforms, with enhanced wear resistance for abrasive polyester melts. Falls under HTS 8477.90.45.01 as a part for plastics profile extrusion machinery. Features optimized flight geometry for shear-sensitive materials.
Modular Segmented Barrel Screw for Compounding Lines
Modular segmented barrel screw for twin-screw compounding extruders used in masterbatch production from polyethylene and additives. Classified in HTS 8477.90.45.01 for plastics processing parts. Allows reconfiguration for different shear rates.
Low-Shear Mixing Screw for Medical Tubing Extrusion
Low-shear barrel screw with distributive mixing sections for extruding medical-grade PVC tubing. Part of plastics machinery for profile extrusion, under HTS 8477.90.45.01. Ensures uniform melt without degrading heat-sensitive polymers.
High-Compression Barrier Screw for HDPE Blow Molding
High-compression barrier screw with Maddock mixer for HDPE blow molding parison extrusion. Designed for plastics blow molding machinery, HTS 8477.90.45.01. Barrier design prevents resin leakage and improves melt homogeneity.
Corrosion-Resistant Screw for Fluoropolymer Processing
Specially coated barrel screw resistant to corrosive fluoropolymers like PTFE and FEP in extrusion lines. For plastics chemical-resistant processing machinery, under HTS 8477.90.45.01. Coating withstands aggressive melt chemistry.