Forged Alloy Steel Socket Weld Flange

Rough-forged socket weld flange of non-stainless alloy steel for inserting pipe ends into recessed sockets before welding, common in power plant steam lines. HTS 7307.91.30.00 applies due to no post-forging processing, preserving raw forged texture. Offers fatigue resistance in cyclic pressure systems.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China3.2%+35.0%38.2%
🇲🇽Mexico3.2%+10.0%13.2%
🇨🇦Canada3.2%+10.0%13.2%
🇩🇪Germany3.2%+10.0%13.2%
🇯🇵Japan3.2%+10.0%13.2%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

7307.99.30.00Same rate: 38.2%

If stainless steel composition

Material-specific subheading for stainless due to market and anti-dumping distinctions.

7307.91Same rate: 38.2%

If processed via threading or boring

Precision features like bores classify as 'other processed' flanges.

8481.80.90.20Lower: 37% vs 38.2%

If for use in valve manifolds

Specialized valve fittings shift to Chapter 84 based on functional assembly.

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 forging lot traceability; alloy steel prone to origin verification under trade agreements

• Declare exact dimensions pre-import; customs scales rough flanges for duty weight basis

Related Products under HTS 7307.91.30.00

Alloy Steel Forged Swivel Flange

Swivel flange assembly forged from non-stainless alloy steel allowing rotation for bolt alignment in shipbuilding. HTS 7307.91.30.00 for basic unprocessed forging. Facilitates installation on misaligned pipes.

Forged Alloy Steel Weld Neck Flange

A forged flange made from alloy steel (not stainless) with a long tapered hub for welding to pipes, used in high-pressure oil and gas pipelines. It falls under HTS 7307.91.30.00 as it is not machined, tooled, or otherwise processed after forging, meeting the 'rough' flange criteria. These flanges provide strong, leak-proof connections in demanding industrial applications.

Rough Forged Alloy Steel Slip-On Flange

A basic slip-on flange forged from non-stainless alloy steel, designed to slide over pipe ends before welding, ideal for moderate-pressure chemical processing lines. Classified under HTS 7307.91.30.00 because it remains unprocessed post-forging, retaining forging scale and rough surfaces. Provides cost-effective connections without requiring precise pipe alignment.

Unprocessed Alloy Steel Blind Flange

Forged blind flange from alloy steel (excluding stainless), used to seal pipe ends in pressure vessel systems for refineries. It qualifies for HTS 7307.91.30.00 as it is supplied rough-forged without machining or tooling. Essential for safe isolation in high-stress environments.

Rough Alloy Steel Orifice Flange Pair

Pair of forged alloy steel flanges (non-stainless) designed for mounting flow meters between them, used in metering stations for natural gas. Falls under HTS 7307.91.30.00 as rough-forged without machining. Provides accurate pressure differential measurement in pipelines.

Basic Forged Alloy Steel Lap Joint Flange

Forged lap joint flange from alloy steel (not stainless) used with stub ends for easy alignment in low-pressure water systems. HTS 7307.91.30.00 due to unprocessed forged state, rough edges intact. Allows rotation for bolt alignment during installation.