Forged Stainless Steel Weld Neck Flange
A rough forged stainless steel flange designed for welding to pipes in piping systems, left unprocessed after forging with visible forging marks. Classified under HTS 7307.21.10.00 as a stainless steel flange not machined, tooled, or otherwise processed post-forging. Used primarily in industrial applications like chemical processing.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of cast iron or non-stainless steel
Flanges of other iron/steel types fall under different material-specific subheadings in 7307.23.
If machined or tooled after forging
Any post-forging processing like drilling or grinding moves it to machined stainless steel flanges.
If imported as unfinished articles for further fabrication
Rough shapes not specifically identifiable as pipe flanges may classify as other steel articles.
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Import Tips & Compliance
• Verify stainless steel composition meets AISI 304/316 standards with mill test certificates to confirm HTS classification
• Include forging process documentation to prove no post-forging machining, avoiding reclassification to machined flange subheadings
• Declare exact dimensions and weight accurately, as rough forgings often require statistical note reporting
Related Products under HTS 7307.21.10.00
Rough Forged Stainless Steel Slip-On Flange
Unfinished forged stainless steel slip-on flange for easy pipe attachment via welding, retaining forging scale and no surface treatment. Falls under HTS 7307.21.10.00 due to stainless steel construction and lack of any post-forging processing. Common in oil and gas pipeline assemblies.
Forged 304 Stainless Steel Blind Flange
Roughly forged 304-grade stainless steel blind flange used to cap pipe ends, unprocessed with hammer marks intact. HTS 7307.21.10.00 applies as it's a stainless steel flange not further worked after forging. Essential for pressure vessel closures in refineries.
Unprocessed Stainless Steel Socket Weld Flange
Forged stainless steel socket weld flange in raw state for socket welding to pipes, no machining applied post-forging. Meets HTS 7307.21.10.00 for other stainless steel flanges not tooled after forging. Applied in high-pressure sanitary piping.
Forged Duplex Stainless Steel Flange Blank
Rough forged duplex stainless steel (2205 grade) flange blank for extreme pressure applications, unprocessed after hammer forging. HTS 7307.21.10.00 covers such stainless steel flanges not otherwise worked. Used in subsea oil recovery.
Raw Stainless Steel Long Neck Flange
Forged stainless steel long neck flange in raw form for high-stress welding, no post-forging treatment. Fits HTS 7307.21.10.00 for unprocessed stainless flanges. Prevalent in power plant steam lines.
Unfinished 304L Stainless Steel Plate Flange
Rough forged 304L stainless plate flange for general piping, preserved in as-forged condition. HTS 7307.21.10.00 for stainless steel flanges not machined post-forging. Suited for pharmaceutical cleanrooms.