304 Stainless Steel Weld Neck Flange
A weld neck flange made from 304 stainless steel, designed for high-pressure piping systems in chemical processing plants. It connects pipes securely via welding and is classified under HTS 7307.21.5000 as a stainless steel flange, other than socket or threaded types. The 'wire' definition does not apply as this is a cast or forged fitting.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 5.6% | +35.0% | 40.6% |
| 🇲🇽Mexico | 5.6% | +10.0% | 15.6% |
| 🇨🇦Canada | 5.6% | +10.0% | 15.6% |
| 🇩🇪Germany | 5.6% | +10.0% | 15.6% |
| 🇯🇵Japan | 5.6% | +10.0% | 15.6% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of carbon steel rather than stainless
Carbon steel flanges fall under the 'other steel' subheading, changing from stainless-specific classification.
If sold as part of a pipe assembly set for retail
Assemblies or sets including flanges may classify under other tube fittings rather than individual flanges.
If incorporating valves or specialized industrial controls
Valve-integrated flanges are classified as valve fittings in Chapter 84, not Chapter 73 pipe fittings.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Verify stainless steel grade certification (e.g
• ASTM A182) to confirm classification and avoid reclassification to carbon steel fittings
• Include mill test reports (MTRs) in documentation to prove material composition during customs examination
• Check for anti-dumping duties on certain stainless steel products from specific countries like China or India
Related Products under HTS 7307.21.50.00
316L Stainless Steel Slip-On Flange
A slip-on flange crafted from 316L stainless steel, ideal for moderate-pressure applications in food and beverage processing. It slips over the pipe end and is fillet welded, fitting HTS 7307.21.5000 for other stainless steel flanges. Exceeds wire dimensions, qualifying as a pipe fitting.
Stainless Steel Blind Flange 150# Class
A 150# class blind flange of stainless steel used to seal pipe ends in oil and gas pipelines. It prevents flow and allows future access, classified under HTS 7307.21.5000 as other stainless steel flanges. Not a wire product due to its large cross-section.
Stainless Steel Long Weld Neck Flange
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321 Stainless Steel Flange
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