About HS Code 731581
This HS code specifically covers stud-link chains made of iron or steel, which are characterized by a stud or bar across the middle of each link. These chains are primarily used in heavy-duty marine applications, such as anchoring for ships, offshore platforms, and permanent mooring systems due to their superior strength, stability, and resistance to kinking. International trade in these goods is driven by the global shipbuilding industry, offshore oil and gas exploration, and marine infrastructure projects. Major importers typically include shipyards, marine construction companies, and offshore energy operators in countries with significant maritime activity. Exporters are often specialized heavy industry manufacturers with advanced steel fabrication capabilities. Key considerations in trade involve adherence to international marine classification society standards (e.g., DNV, ABS, Lloyd's Register), material grade, proof load, and corrosion resistance, as failure can have catastrophic consequences.
Products Under This Code
Anchor chains, mooring chains, offshore platform chains, ship's stud-link chains, marine riser chains, buoy chains, oil rig chains
Real World Examples
Vicinay Marine anchor chains, Ramnäs Bruk mooring chains, Fincantieri ship chains, DCL Mooring & Rigging chains
Common Misclassification
This code can be confused with 731582 (welded link chain) if the specific stud-link feature is overlooked, or 731589 (other chains) if its heavy-duty marine application isn't clearly defined.
Products Classified Under 7315.81
Industry
This code belongs to the Automotive & Vehicles industry.
Trade Overview
Top importers include shipbuilding nations like South Korea and China, while major exporters are often industrial powerhouses such as Germany and Japan.
Frequently Asked Questions
What is HS code 731581?
HS code 731581 covers: Chain; stud-link chain, of iron or steel. This HS code specifically covers stud-link chains made of iron or steel, which are characterized by a stud or bar across the middle of each link. These chains are primarily used in heavy-duty marine applications, such as anchoring for ships, offshore platforms, and permanent mooring systems due to their superior strength, stability, and resistance to kinking. International trade in these goods is driven by the global shipbuilding industry, offshore oil and gas exploration, and marine infrastructure projects. Major importers typically include shipyards, marine construction companies, and offshore energy operators in countries with significant maritime activity. Exporters are often specialized heavy industry manufacturers with advanced steel fabrication capabilities. Key considerations in trade involve adherence to international marine classification society standards (e.g., DNV, ABS, Lloyd's Register), material grade, proof load, and corrosion resistance, as failure can have catastrophic consequences.
What products fall under HS code 731581?
Anchor chains, mooring chains, offshore platform chains, ship's stud-link chains, marine riser chains, buoy chains, oil rig chains
What are common misclassifications for HS code 731581?
This code can be confused with 731582 (welded link chain) if the specific stud-link feature is overlooked, or 731589 (other chains) if its heavy-duty marine application isn't clearly defined.
How is HS code 731581 structured?
HS code 731581 is a 6-digit subheading under the Harmonized System. The first 2 digits (73) identify the chapter, digits 3-4 (15) identify the heading, and digits 5-6 (81) specify the subheading. This code is standardized globally by the World Customs Organization.