HS Code for Stainless pipe flanges

Stainless steel pipe flanges are classified under HS code 7307.21. Chapter 73 of the Harmonized System covers articles of iron or steel. Heading 7307 is specifically designated for tube or pipe fittings, such as couplings, elbows, sleeves, and flanges. The classification is further refined by the material and the specific type of fitting. Subheading 7307.21 is reserved for flanges made specifically of stainless steel. These components are used to connect pipes, valves, pumps, and other equipment to form a piping system. The classification is determined by the metallurgical composition (stainless steel) and the function of the article (a flange). To qualify as stainless steel under the HS code, the alloy must contain by weight 1.2% or less of carbon and 10.5% or more of chromium. Flanges are typically flat rings or disks that are bolted together to join pipe sections. This code covers various types of stainless flanges, including slip-on, weld neck, and blind flanges, provided they meet the material specifications. This classification is governed by GRI 1 and the specific definitions found in the Chapter 72 and 73 notes.

Products Included

• Stainless steel slip-on flanges
• Stainless steel weld neck flanges
• Stainless steel blind flanges
• Stainless steel socket weld flanges
• Stainless steel threaded flanges
• Stainless steel lap joint flanges
• Forged stainless steel flanges

Common Misclassification

A frequent misclassification is using 7307.11 or 7307.19, which are for cast fittings. While some flanges are cast, most industrial stainless flanges are forged and fall under 7307.21. Another error is using 7307.91, which is for flanges made of iron or non-stainless steel. It is critical to verify the chromium content to distinguish between stainless steel and other alloy steels, as this significantly impacts the duty rate and trade compliance.

FAQ

What is the HS code for stainless pipe flanges?

The HS code for stainless steel pipe flanges is 7307.21. This code is specific to flanges and does not include other types of fittings like elbows or couplings.

Are gaskets included in this HS code?

No, gaskets are classified separately based on their material. For example, rubber gaskets fall under 4016.93, while composite gaskets may fall under 8484.10. They are only classified with the flange if they are part of a specialized kit.