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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If stainless for corrosive service
Corrosion resistance needs alloy steel.
If with integral flowmeter
Assembled instruments classify in Chapter 90.
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
• Import as pairs with jack screws; single units may reclassify
• Bore schedules (e.g
• Schedule 40) must match pipe declarations
• API 6A certification often required for petroleum use
Related Products under HTS 7307.91.50.10
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