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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If alloy steel but not stainless (e.g., specific chrome-moly grades)
Non-stainless alloy steel flanges shift to a separate subheading within stainless/other steel distinctions.
If threaded rather than weld/slip-on type
Threaded flanges have their own stainless steel subheading, distinct from other flanges.
If designed as pump or compressor parts
End-use as machinery parts can reclassify under Chapter 84 pumps, overriding general pipe fitting.
Not sure which classification is right?
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Import Tips & Compliance
• Label products clearly with material grade and pressure ratings to facilitate HTS verification at entry
• Obtain FDA compliance certificates if for food contact to prevent delays in sanitary applications
• Avoid common pitfall of misdeclaring size; flanges over 16mm dimension stay in this code, not wire-based
Related Products under HTS 7307.21.50.00
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.
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
Extended hub long weld neck flange in stainless steel for high-temperature steam lines in power plants. Provides reinforcement for high-stress applications, under HTS 7307.21.5000 as other stainless flanges. Forged construction exceeds wire specs.
Super Duplex SAF2507 Flange
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Stainless Steel Orifice Flange
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321 Stainless Steel Flange
321 stabilized stainless steel flange for high-temperature exhaust systems in aerospace. Resists intergranular corrosion, HTS 7307.21.5000 other flanges.