Embedded finned tubes with a base tube material of ASME SB163 N04400 (Monel 400) are designed for seawater cooling heat exchangers where corrosion resistance, long-term service performance, and reliable heat transfer are critical requirements.

The embedded fin structure is manufactured by machining grooves on the outer surface of the base tube and inserting metallic fins into the grooves, creating a mechanical bond between the tube and fins. This structure improves heat transfer efficiency while maintaining the excellent seawater corrosion resistance of N04400 alloy.

With strong resistance to seawater, salt solutions, and many chemical environments, Monel 400 embedded finned tubes are widely used in marine cooling systems, offshore equipment, and industrial heat exchange applications.

Key Features

Base Tube Material: ASME SB163 N04400 (Monel 400)
Fin Type: Embedded Fin / G-Type Fin Tube
High corrosion resistance: Suitable for seawater and marine environments
Enhanced heat transfer: Increased external surface area improves thermal efficiency
Mechanical fin bonding: Provides stable fin contact under operating conditions
Suitable for long-term operation: Commonly applied in ship and offshore cooling systems

Typical Applications

Embedded finned tubes using N04400 base tubes are mainly applied in heat transfer equipment exposed to seawater or corrosive cooling media.

Marine & Shipbuilding Industry

Seawater cooling heat exchangers
Central cooling systems
Marine engine jacket water coolers
Lubricating oil coolers
Hydraulic oil coolers
Condensers
Plate and shell heat exchanger tube bundles

Offshore & Energy Applications

Offshore platform cooling systems
Desalination equipment
Process cooling units
Coastal power plant cooling systems

Industrial Applications

Chemical process heat exchangers
Corrosive fluid cooling equipment
Heat recovery systems requiring seawater circulation

Dimensional Range

The dimensions of embedded finned tubes can be customized according to heat exchanger design requirements.

Item	Typical Range
Base Tube Outside Diameter	12.7 mm – 63.5 mm
Base Tube Wall Thickness	1.0 mm – 5.0 mm
Tube Length	≤ 18,000 mm
Fin Height	3 mm – 15 mm
Fin Thickness	0.3 mm – 1.0 mm
Fin Pitch	2.0 mm – 8.0 mm
Fin Material	Copper, Aluminum, Stainless Steel, Nickel Alloy
Tube Standard	ASME SB163 / ASTM B163
Manufacturing Type	Embedded (G-Type) Fin Tube

Special dimensions are available according to customer drawings and heat exchanger requirements.

Base Tube Material: ASME SB163 N04400 Chemical Composition

N04400 (Monel 400) is a nickel-copper alloy known for excellent resistance to seawater corrosion, stress corrosion cracking, and erosion in marine environments.

Element	Composition (%)
Nickel (Ni)	63.0 min
Copper (Cu)	28.0 – 34.0
Iron (Fe)	≤ 2.5
Manganese (Mn)	≤ 2.0
Carbon (C)	≤ 0.30
Silicon (Si)	≤ 0.50
Sulfur (S)	≤ 0.024

Mechanical Properties of ASME SB163 N04400

Property	Typical Requirement
Tensile Strength	≥ 483 MPa
Yield Strength (0.2% Offset)	≥ 193 MPa
Elongation	≥ 35%
Density	Approx. 8.80 g/cm³

Ratings & Review

Overall Rating

4.0

Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings

5 stars

4 stars

100%

3 stars

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1 stars

All Reviews

Juan

Argentina Feb 18.2026

Helpful (2)

The finning is tight — you can tell they used a proper cold-forming process because the fins don't move at all when you try to wiggle them. We've had issues before with other suppliers where the fins would come loose after a few thermal cycles, but these ones feel solid.

Tags:

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Alloy Steel Boiler Tube

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Fired Heater Parts

Baffle Plate

Tubesheet

Studded Tube

Solid Fin Tube

Serrated Finned tube

Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

Heat Exchanger Tube

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube

Copper Alloy Steel Heat Exchanger Tube

Titanium Alloy Steel Heat Exchanger Tube

Alloy Steel Heat Exchanger Tube

U Bend Heat Exchanger Tube

Carbon Steel Heat Exchanger Tubes

Boiler Tube

Nickel Alloy Steel Boiler Tube

Stainless Steel Boiler Tube

Duplex Stainless Steel Boiler Tube

Alloy Steel Boiler Tube

Carbon Steel Boiler Tube

Fired Heater Parts

Baffle Plate

Tubesheet

products details

Studded Tube

Solid Fin Tube

Serrated Finned tube

Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

Heat Exchanger Tube

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube