About HS Code 391731
This HS code specifically targets flexible tubes, pipes, and hoses made of plastics that are engineered to withstand extremely high pressures, defined by a minimum burst pressure of 27.6 Megapascals (approximately 4000 psi). These are not your everyday garden hoses; they are critical components in demanding industrial, hydraulic, and pneumatic systems. Importers are typically manufacturers of heavy machinery, automotive components, aerospace equipment, and specialized industrial equipment where high-pressure fluid transfer is essential. Exporters are highly specialized manufacturers of reinforced plastic hoses, often incorporating multiple layers or textile/wire braiding. The trade is driven by the need for reliable and safe high-pressure fluid conveyance. Key considerations include the specific polymer composition, reinforcement materials, temperature range, chemical compatibility, and adherence to stringent safety standards and certifications. These products are vital for the safe and efficient operation of high-performance systems.
Products Under This Code
High-pressure hydraulic hoses, Reinforced pneumatic tubing, Automotive brake lines (plastic core), Industrial spray hoses, Fuel injection lines (plastic), High-pressure chemical transfer hoses, Robotic arm hoses, Power steering hoses (plastic)
Real World Examples
Parker Hannifin hydraulic hoses, Eaton Aeroquip high-pressure hoses, Gates industrial hoses, Continental Contitech high-pressure plastic hoses
Common Misclassification
This code is often confused with other flexible plastic tubes/hoses (e.g., 391739) if the specific burst pressure rating is not known or if it falls below the 27.6MPa threshold.
Products Classified Under 3917.31
Industry
This code belongs to the Plastics & Rubber industry.
Trade Overview
The USA, Germany, and China are major importers, while Germany, the USA, and Japan are key exporters of these high-pressure flexible plastic hoses.
Frequently Asked Questions
What is HS code 391731?
HS code 391731 covers: Plastics; tubes, pipes and hoses thereof, flexible, having a minimum burst pressure of 27.6MPa. This HS code specifically targets flexible tubes, pipes, and hoses made of plastics that are engineered to withstand extremely high pressures, defined by a minimum burst pressure of 27.6 Megapascals (approximately 4000 psi). These are not your everyday garden hoses; they are critical components in demanding industrial, hydraulic, and pneumatic systems. Importers are typically manufacturers of heavy machinery, automotive components, aerospace equipment, and specialized industrial equipment where high-pressure fluid transfer is essential. Exporters are highly specialized manufacturers of reinforced plastic hoses, often incorporating multiple layers or textile/wire braiding. The trade is driven by the need for reliable and safe high-pressure fluid conveyance. Key considerations include the specific polymer composition, reinforcement materials, temperature range, chemical compatibility, and adherence to stringent safety standards and certifications. These products are vital for the safe and efficient operation of high-performance systems.
What products fall under HS code 391731?
High-pressure hydraulic hoses, Reinforced pneumatic tubing, Automotive brake lines (plastic core), Industrial spray hoses, Fuel injection lines (plastic), High-pressure chemical transfer hoses, Robotic arm hoses, Power steering hoses (plastic)
What are common misclassifications for HS code 391731?
This code is often confused with other flexible plastic tubes/hoses (e.g., 391739) if the specific burst pressure rating is not known or if it falls below the 27.6MPa threshold.
How is HS code 391731 structured?
HS code 391731 is a 6-digit subheading under the Harmonized System. The first 2 digits (39) identify the chapter, digits 3-4 (17) identify the heading, and digits 5-6 (31) specify the subheading. This code is standardized globally by the World Customs Organization.