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ASTM B111 C68700 Low Finned Tube For Heat Exchanger in Marine Applications

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ASTM B111 C68700 Low Finned Tube For Heat Exchanger in Marine Applications

Brand Name:	Yuhong
Model Number:	ASTM B111 C68700 Low Finned Tube
MOQ:	2 PCS
Price:	Negotiable
Packaging Details:	Ply-wooden Cases with Steel Frames and Pipe's both ends with plastic caps
Payment Terms:	TT,LC

Detail Information

Product Description

Ratings & Reviews

Detail Information

Place of Origin:

China

Certification:

ABS, BV, DNV, CCS, LR

Product Name:

ASTM B111 C68700 Low Finned Tube

Bare Tube Specification&Material:

ASTM B111 C68700

Bare Tube OD:

10~38mm

Bare Tube Length:

Customsized

Fin Height:

＜1.6mm

Fin Thickness:

~0.3mm

Fin Pitch:

0.6~2mm

Application Industries:

Marine Applications; Power Generation; HVAC And Refrigeration; Industrial Processes...

Supply Ability:

According to Clients' requirements

Highlight:

ASTM B111 C68700 low fin tube

marine heat exchanger finned tube

low fin tube with warranty

Product Description

ASTM B111 C68700 Low Finned Tube For Heat Exchanger in Marine Applications

An ASTM B111 C68700 Low Finned Tube is a high-efficiency heat exchanger component made from a specific corrosion-resistant copper alloy. Its defining characteristic is the addition of thousands of small "fins" rolled directly out of the tube's outer surface, which significantly increases the surface area available for heat transfer.

1. Tube Material: ASTM B111 C68700

(1) Chemical Composition

The table below shows the standard chemical composition for C68700, which is consistent across all product forms.

Element	Percentage (%)
Copper (Cu)	76.0 - 79.0 -2-5
Zinc (Zn)	Balance (approx. 20%) -2-3
Aluminum (Al)	1.8 - 2.5 -2-5
Arsenic (As)	0.02 - 0.10 -2-5
Iron (Fe)	≤ 0.06 -2-5
Lead (Pb)	≤ 0.07 -2-5

(2) Mechanical Properties

Temper	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)
Annealed (O61)	345 min. -9 / 360 -2	125 min. -9 / 80-90 -2	50 -2
¼ Hard (H02)	450	250	25
Hard (H04)	600	540	10

2. Fin Tube Type: Low Finned

The fins are not separate pieces attached to the tube; they are "integral," meaning they are cold-rolled from the base tube material itself. This process creates a tube with a much larger external surface area compared to a plain tube, which dramatically improves its ability to transfer heat.

In essence, an ASTM B111 C68700 Low Finned Tube combines a proven, corrosion-resistant material (Arsenical Aluminum Brass) with an efficient surface-enhancing design (integral low fins) , all manufactured to a strict industry standard (ASTM B111) . This combination makes it a highly effective and durable component for demanding heat exchange applications.

3. The advantages of ASTM B111 C68700 Low Finned Tube

Enhanced Heat Transfer

Superior Corrosion Resistance

Structural & Mechanical Integrity

Economic Efficiency

4. Core Applications

Application Area	Specific Uses	Key Benefit / Why This Tube is Used
Power Generation	Surface condensers and cooling systems in thermal, nuclear, and geothermal power plants.	Withstands high-velocity cooling water and provides reliable, long-term performance.
Marine & Offshore	Shipboard condensers, seawater cooling systems, and offshore platform heat exchangers.	Exceptional resistance to seawater corrosion, impingement attack, and erosion-corrosion .
Desalination	Evaporators and heat exchangers in seawater desalination and saltwater treatment facilities.	Handles the highly corrosive nature of saltwater and brine effectively.
HVAC & Refrigeration	Evaporators, condensers, and chillers in large central air conditioning and industrial refrigeration systems.	Compact size and high heat transfer efficiency are crucial for these systems.
Chemical & Petrochemical	Heat exchangers in processing plants, oil coolers, and systems handling aggressive media.	Suitable for corrosive environments and provides efficient thermal management.

ASTM B111 C68700 Low Finned Tube For Heat Exchanger in Marine Applications 0

Ratings & Review

Overall Rating

4.3

Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings

5 stars

33%

4 stars

67%

3 stars

2 stars

1 stars

All Reviews

K*w

Malaysia Feb 21.2026

Helpful (8)

It's hot and humid here, and our old wrap-on tubes used to rust like crazy. Switched to your extruded ones—the aluminum fin covers the steel pipe perfectly, so corrosion shouldn't be an issue.

Marcus

Belize Jan 19.2026

Helpful (1)

It's genuine 321H — titanium-stabilized, so no worries about sensitization or intergranular corrosion during welding. Our welder said it welded nicely with no cracking.

Godfrey

Uganda Aug 20.2025

Helpful (3)

For power plant boilers, especially in industrial settings like ours, these tubes work. Good heat transfer, holding up well.

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Stainless Steel Boiler Tube

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Fired Heater Parts

Baffle Plate

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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