Chapter 84 is a core chapter in the HS classification system, covering various machines, mechanical appliances, and their parts, including power machinery, agricultural machinery, metalworking machine tools, office equipment, automatic data processing equipment, lifting and handling machinery, food processing machinery, etc. This chapter emphasizes the functional and power-driven characteristics of machines, but explicitly excludes electrical equipment (Chapter 85), vehicles (Chapter 87), and optical instruments (Chapter 90). Heading 8477 specifically covers machinery for working rubber or plastics or for the manufacture of products from these materials, not specified or included elsewhere in this chapter, including injection molding machines, extruders, blow molding machines, calenders, compression molding machines, etc. This heading includes both machinery for working rubber or plastics raw materials and machinery for working finished products made of rubber or plastics, but excludes draw-winding machines for chemical fibers (heading 8444) or coating machines for papermaking (heading 8439). Code 847720 consists of 6 digits. The first 2 digits 84 represent Chapter 84, i.e., nuclear reactors, boilers, machinery, mechanical appliances, and their parts. The 3rd-4th digits 77 constitute heading 8477, indicating machinery for working rubber or plastics or for the manufacture of products from these materials, not specified or included elsewhere in this chapter. The 5th-6th digits 20 are the subheading, indicating extruders. An extruder is a machine that heats and melts rubber or plastic raw materials through a screw or plunger and continuously extrudes them into products such as pipes, profiles, sheets, films, etc. Subheading 847720 is the only subheading under heading 8477 specifically for extruders, alongside other subheadings such as injection molding machines (847710), blow molding machines (847730), etc. Extruders are classified under 847720 because their core function is to process rubber or plastics and to shape them through the extrusion process, which conforms to the description of heading 8477. They are not classified under 847710 (injection molding machines) because injection molding machines use intermittent injection molding, while extruders use continuous extrusion; nor under 847730 (blow molding machines) because blow molding machines are used for hollow molding; nor under 8456 (laser processing machine tools) or 8462 (metalworking machine tools) because the material being processed is plastic or rubber, not metal.
Chapter
Chapter 84 is a core chapter in the HS classification system, covering various machines, mechanical appliances, and their parts, including power machinery, agricultural machinery, metalworking machine tools, office equipment, automatic data processing equipment, lifting and handling machinery, food processing machinery, etc. This chapter emphasizes the functional and power-driven characteristics of machines, but explicitly excludes electrical equipment (Chapter 85), vehicles (Chapter 87), and optical instruments (Chapter 90).
Heading
Heading 8477 specifically covers machinery for working rubber or plastics or for the manufacture of products from these materials, not specified or included elsewhere in this chapter, including injection molding machines, extruders, blow molding machines, calenders, compression molding machines, etc. This heading includes both machinery for working rubber or plastics raw materials and machinery for working finished products made of rubber or plastics, but excludes draw-winding machines for chemical fibers (heading 8444) or coating machines for papermaking (heading 8439).
Digit Breakdown
Code 847720 consists of 6 digits. The first 2 digits 84 represent Chapter 84, i.e., nuclear reactors, boilers, machinery, mechanical appliances, and their parts. The 3rd-4th digits 77 constitute heading 8477, indicating machinery for working rubber or plastics or for the manufacture of products from these materials, not specified or included elsewhere in this chapter. The 5th-6th digits 20 are the subheading, indicating extruders. An extruder is a machine that heats and melts rubber or plastic raw materials through a screw or plunger and continuously extrudes them into products such as pipes, profiles, sheets, films, etc. Subheading 847720 is the only subheading under heading 8477 specifically for extruders, alongside other subheadings such as injection molding machines (847710), blow molding machines (847730), etc.
Classification Basis
Extruders are classified under 847720 because their core function is to process rubber or plastics and to shape them through the extrusion process, which conforms to the description of heading 8477. They are not classified under 847710 (injection molding machines) because injection molding machines use intermittent injection molding, while extruders use continuous extrusion; nor under 847730 (blow molding machines) because blow molding machines are used for hollow molding; nor under 8456 (laser processing machine tools) or 8462 (metalworking machine tools) because the material being processed is plastic or rubber, not metal.
📝 Declaration Elements
Product Name: The Chinese and foreign language names of the declared commodity should be specific and clear, such as "plastic extruder" or "rubber extruder." Use: Explain the processing object and final product of the machine, such as "used to melt and extrude plastic pellets into PVC pipes." Brand: Declare the brand or manufacturer name of the machine; if there is no brand, indicate "no brand." Model: Declare the specific model of the machine, which should be consistent with the contract and invoice. Extrusion Method: Indicate whether it is single-screw, twin-screw, or multi-screw extrusion, and whether it has functions such as venting and mixing. Processing Object: Specify whether it is plastic or rubber, and the specific type, such as PE, PVC, ABS, etc. Power: Declare the main motor power in kilowatts (kW). Specifications and Dimensions: Declare key dimensional parameters such as screw diameter and length-to-diameter ratio. Customs declaration example:
Product Name: Plastic Extruder
Use: Used to melt and extrude PVC powder into pipes
Brand: Haitian
Model: SJ-65
Extrusion Method: Single-screw
Processing Object: PVC
Power: 22kW
Specifications and Dimensions: Screw diameter 65mm, length-to-diameter ratio 25:1
HS Code: 847720
Quantity: 1 unit
Total Price: USD 25,000 Mistakenly classifying extruders under 847710 (injection molding machines); the two processes are different. Failure to specify whether the processing object is plastic or rubber, affecting subheading determination. Ignoring declaration elements such as brand and model, leading to classification disputes.
Product Name
The Chinese and foreign language names of the declared commodity should be specific and clear, such as "plastic extruder" or "rubber extruder."
⚠️ Declaring only "extruder" without specifying the processing object, or mistakenly declaring it as "injection molding machine."
Use
Explain the processing object and final product of the machine, such as "used to melt and extrude plastic pellets into PVC pipes."
⚠️ The use description is too general, such as "used for plastic processing."
Brand
Declare the brand or manufacturer name of the machine; if there is no brand, indicate "no brand."
⚠️ Brand spelling errors or inconsistency with the actual product.
Model
Declare the specific model of the machine, which should be consistent with the contract and invoice.
⚠️ Model omitted or abbreviated, making it impossible to match.
Extrusion Method
Indicate whether it is single-screw, twin-screw, or multi-screw extrusion, and whether it has functions such as venting and mixing.
⚠️ Failure to distinguish between single and twin screw, affecting classification.
Processing Object
Specify whether it is plastic or rubber, and the specific type, such as PE, PVC, ABS, etc.
⚠️ Mistakenly declaring a plastic extruder as a rubber extruder.
Power
Declare the main motor power in kilowatts (kW).
⚠️ Incorrect power unit or failure to declare.
Specifications and Dimensions
Declare key dimensional parameters such as screw diameter and length-to-diameter ratio.
⚠️ Incomplete dimensional parameters or incorrect units.
Example： Customs declaration example:
Product Name: Plastic Extruder
Use: Used to melt and extrude PVC powder into pipes
Brand: Haitian
Model: SJ-65
Extrusion Method: Single-screw
Processing Object: PVC
Power: 22kW
Specifications and Dimensions: Screw diameter 65mm, length-to-diameter ratio 25:1
HS Code: 847720
Quantity: 1 unit
Total Price: USD 25,000
Common Mistakes：
Mistakenly classifying extruders under 847710 (injection molding machines); the two processes are different.
Failure to specify whether the processing object is plastic or rubber, affecting subheading determination.
Ignoring declaration elements such as brand and model, leading to classification disputes.
🎯 Classification Logic
The core basis for classification is the function of the machine: whether it is a rubber or plastics processing machine and uses the extrusion process. Extruders heat and melt materials and extrude them through a screw to continuously produce profiles, pipes, sheets, etc., which conforms to the description of heading 8477. If a machine has both extrusion and injection molding functions, it should be classified according to its primary function. If the processing object is metal, it should be classified under other headings in Chapter 84 such as 8462. If it is for chemical fiber drawing, it should be classified under 8444. 847710 Injection Molding Machine: Injection molding machines use intermittent injection molding, injecting molten plastic into a mold cavity; extruders use continuous extrusion molding, with no mold or only a die. 847730 Blow Molding Machine: Blow molding machines are used for hollow molding, such as bottles; extruders are used for continuous production of solid or hollow profiles. 847740 Vacuum Molding Machines and Other Thermoforming Machines: Vacuum molding machines heat plastic sheets and then vacuum-form them; extruders extrude molten raw materials. 844400 Chemical Fiber Extruders: Chemical fiber extruders are used to produce fibers and are classified under 8444; plastic extruders are used to produce plastic products and are classified under 8477. 846290 Metal Extruders: Metal extruders are used for metal processing and are classified under 8462; plastic extruders are used for plastic processing and are classified under 8477. Is the machine used for processing rubber or plastics? Does it use a continuous extrusion process? Does it have a screw or plunger extrusion device? Is it confused with injection molding, blow molding, or other processes? Is it used to produce chemical fibers?
Basis
The core basis for classification is the function of the machine: whether it is a rubber or plastics processing machine and uses the extrusion process. Extruders heat and melt materials and extrude them through a screw to continuously produce profiles, pipes, sheets, etc., which conforms to the description of heading 8477. If a machine has both extrusion and injection molding functions, it should be classified according to its primary function. If the processing object is metal, it should be classified under other headings in Chapter 84 such as 8462. If it is for chemical fiber drawing, it should be classified under 8444.
Confused Codes：
847710 - Injection Molding Machine
Injection molding machines use intermittent injection molding, injecting molten plastic into a mold cavity; extruders use continuous extrusion molding, with no mold or only a die.
847730 - Blow Molding Machine
Blow molding machines are used for hollow molding, such as bottles; extruders are used for continuous production of solid or hollow profiles.
847740 - Vacuum Molding Machines and Other Thermoforming Machines
Vacuum molding machines heat plastic sheets and then vacuum-form them; extruders extrude molten raw materials.
844400 - Chemical Fiber Extruders
Chemical fiber extruders are used to produce fibers and are classified under 8444; plastic extruders are used to produce plastic products and are classified under 8477.
846290 - Metal Extruders
Metal extruders are used for metal processing and are classified under 8462; plastic extruders are used for plastic processing and are classified under 8477.
Self-Check：
✓ Is the machine used for processing rubber or plastics?
✓ Does it use a continuous extrusion process?
✓ Does it have a screw or plunger extrusion device?
✓ Is it confused with injection molding, blow molding, or other processes?
✓ Is it used to produce chemical fibers?
❓ FAQ
How do I look up the HS code for an extruder? First confirm that the machine is used for processing rubber or plastics and uses the extrusion process. Then refer to Chapter 84 of the HS code, heading 8477, subheading 847720. You can refer to the Customs Tariff of Import and Export or use an online HS code query tool and enter the keyword "extruder." How are extruders and injection molding machines distinguished in HS codes? Extruders are classified under 847720, and injection molding machines under 847710. The key difference lies in the process: extruders continuously extrude molten plastic through a die; injection molding machines inject molten plastic into a closed mold, cool it, and then open the mold to remove the product. Do plastic extruders and rubber extruders have the same HS code? Yes, both are classified under 847720 because heading 8477 covers rubber or plastics processing machinery, and subheading 847720 does not further distinguish between them. However, when declaring, it is necessary to specify whether the processing object is plastic or rubber for customs statistics. How are extruder parts classified? If extruder parts are dedicated parts, they should be classified under 847790 (parts of heading 8477); if they are general-purpose parts (such as bolts, bearings), they should be classified under the corresponding heading according to their material. Note whether the parts are declared together with the main machine. How are used extruders declared for export? Used extruders still need to be declared under HS code 847720 for export, but information such as the year of manufacture and condition of use of the machine must be provided. Some countries may have additional requirements for used mechanical and electrical products; it is advisable to check the destination country's regulations in advance. What are common errors in the declaration elements for extruders? Common errors include: failure to specify the processing object (plastic or rubber), confusion between single and twin screw, omission of brand and model, incorrect power units, etc. These errors may lead to classification disputes or customs clearance delays. How do I check the import tariff rate for extruders? Tariff rates change, so it is advisable to check the latest rates through the official website of the General Administration of Customs or the China International Trade Single Window. Note the most-favored-nation rate, general rate, value-added tax, and consumption tax, etc., depending on the country of origin and trade agreements. What certifications are required for exporting extruders to the EU? Exporting to the EU requires CE certification, including the Machinery Directive, Low Voltage Directive, and Electromagnetic Compatibility Directive. In addition, technical files, risk assessments, and user manuals must be provided. It is advisable to contact a certification body in advance.
Q: How do I look up the HS code for an extruder?
A: First confirm that the machine is used for processing rubber or plastics and uses the extrusion process. Then refer to Chapter 84 of the HS code, heading 8477, subheading 847720. You can refer to the Customs Tariff of Import and Export or use an online HS code query tool and enter the keyword "extruder."
Q: How are extruders and injection molding machines distinguished in HS codes?
A: Extruders are classified under 847720, and injection molding machines under 847710. The key difference lies in the process: extruders continuously extrude molten plastic through a die; injection molding machines inject molten plastic into a closed mold, cool it, and then open the mold to remove the product.
Q: Do plastic extruders and rubber extruders have the same HS code?
A: Yes, both are classified under 847720 because heading 8477 covers rubber or plastics processing machinery, and subheading 847720 does not further distinguish between them. However, when declaring, it is necessary to specify whether the processing object is plastic or rubber for customs statistics.
Q: How are extruder parts classified?
A: If extruder parts are dedicated parts, they should be classified under 847790 (parts of heading 8477); if they are general-purpose parts (such as bolts, bearings), they should be classified under the corresponding heading according to their material. Note whether the parts are declared together with the main machine.
Q: How are used extruders declared for export?
A: Used extruders still need to be declared under HS code 847720 for export, but information such as the year of manufacture and condition of use of the machine must be provided. Some countries may have additional requirements for used mechanical and electrical products; it is advisable to check the destination country's regulations in advance.
Q: What are common errors in the declaration elements for extruders?
A: Common errors include: failure to specify the processing object (plastic or rubber), confusion between single and twin screw, omission of brand and model, incorrect power units, etc. These errors may lead to classification disputes or customs clearance delays.
Q: How do I check the import tariff rate for extruders?
A: Tariff rates change, so it is advisable to check the latest rates through the official website of the General Administration of Customs or the China International Trade Single Window. Note the most-favored-nation rate, general rate, value-added tax, and consumption tax, etc., depending on the country of origin and trade agreements.
Q: What certifications are required for exporting extruders to the EU?
A: Exporting to the EU requires CE certification, including the Machinery Directive, Low Voltage Directive, and Electromagnetic Compatibility Directive. In addition, technical files, risk assessments, and user manuals must be provided. It is advisable to contact a certification body in advance.
⚠️ Disclaimer: HS code classification, declaration elements, tariff rates and regulatory conditions on this page are for reference only and do not constitute legal advice on customs classification. Tariff rates and regulations are subject to change; the latest announcements from the General Administration of Customs and on-site determinations shall prevail. Please consult professional customs brokers or customs authorities before import/export.