Iron Blind Flange 2 Inch
A 2-inch blind flange of cast iron used to seal pipe ends, featuring an inside diameter of 51 mm. It provides a bolted cover for pressure testing or permanent closure in pipelines. Classified under HTS 7307.91.50.10 as an iron flange with ID less than 360 mm.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If stainless steel
Stainless variants classify as alloy steel under 7307.92.
If for industrial high-temp use with alloy additives
If alloyed for heat resistance, shifts to other steel flanges.
If not a flange but a threaded nipple
Threaded closures without flange features classify as other tube 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
• Provide foundry test certificates confirming iron composition to prevent misclassification as alloy
• Declare accurately if galvanized—may require separate coating duty consideration
Related Products under HTS 7307.91.50.10
Carbon Steel Weld Neck Flange 4 Inch
A 4-inch carbon steel weld neck flange designed for high-pressure piping systems in industrial applications. It features a tapered hub for welding to pipes and has an inside diameter of 102 mm, classifying it under HTS 7307.91.50.10 as a flange of iron or nonalloy steel less than 360 mm ID. Used in oil refineries and chemical plants for secure connections.
Nonalloy Steel Slip-On Flange 6 Inch
A slip-on flange made from nonalloy steel for low-pressure applications like water lines, with a 152 mm inside diameter. It slips over pipe ends and is secured by fillet welding on both sides. Falls under HTS 7307.91.50.10 due to its iron/nonalloy steel construction and ID under 360 mm.
Carbon Steel Socket Weld Flange 3 Inch
3-inch socket weld flange of carbon steel for high-integrity welding in process piping, with 76 mm ID. The socket allows pipe insertion and fillet welding for leak-proof joints. HTS 7307.91.50.10 applies to its nonalloy steel and sub-360 mm ID.
Nonalloy Steel Raised Face Flange 8 Inch
An 8-inch raised face flange made of nonalloy steel for gasket sealing in flange-to-flange connections, ID 203 mm. The raised face ensures proper compression. Under HTS 7307.91.50.10 for iron/nonalloy steel flanges under 360 mm ID.
Cast Iron Lap Joint Flange 5 Inch
5-inch lap joint flange of cast iron for stub-end assemblies in low-pressure systems, ID 127 mm. Allows rotation for bolt alignment. HTS 7307.91.50.10 covers its iron construction and ID spec.
Carbon Steel Long Neck Flange 10 Inch
10-inch long neck carbon steel flange for extended weld reinforcement in high-stress pipelines, ID 254 mm. Provides extra hub length for welding. Fits HTS 7307.91.50.10 as nonalloy steel flange <360 mm ID.