Of iron or nonalloy steel
Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel: > Other: > Flanges: > Other > With an inside diameter of less than 360 mm: > Of iron or nonalloy steel
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified 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.
Nonalloy Steel Flat Face Flange 1 Inch
1-inch flat face flange of nonalloy steel for full-face gasket applications in HVAC ducting, ID 25 mm. Smooth sealing surface without raised ring. HTS 7307.91.50.10 for small ID iron/nonalloy flanges.
Iron Orifice Flange 4 Inch
4-inch iron orifice flange pair for flow meter installation, ID 102 mm with machined metering ports. Used in oil/gas metering skids. Under HTS 7307.91.50.10 as iron flanges <360 mm ID.
Carbon Steel Reducing Flange 6x4 Inch
6-inch to 4-inch reducing flange in carbon steel for transitioning pipe sizes, smallest ID 102 mm. Hub design accommodates size change. HTS 7307.91.50.10 based on nonalloy steel and ID <360 mm.
Nonalloy Steel Paddle Blind Flange 2 Inch
2-inch paddle blind flange of nonalloy steel with handle for spectacle blind systems, ID 51 mm. Used for positive isolation. Fits HTS 7307.91.50.10 specs.
Cast Iron Spacer Flange 3 Inch
3-inch cast iron spacer flange for extending face-to-face dimensions, ID 76 mm. Plain ring with bolt holes. HTS 7307.91.50.10 for iron <360 mm ID.
Carbon Steel Weld Ring Flange 8 Inch
8-inch weld ring flange (lap joint stub end) of carbon steel, ID 203 mm. Ring slips over stub for welding. Under HTS 7307.91.50.10.
Nonalloy Steel Drip Ring Flange 1.5 Inch
1.5-inch drip ring flange for condensate drainage in steam lines, ID 38 mm. Features drain ports. HTS 7307.91.50.10 applies.
Iron Swivel Ring Flange 12 Inch
12-inch swivel ring flange of iron for adjustable bolt alignment, ID 305 mm (under 360). Used in temporary piping. HTS 7307.91.50.10.
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.