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ASTM B729 Alloy 20 Seamless Tubes Corrosion-Resistant Cold-Drawn Tubes for Heat Exchangers Boilers

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ASTM B729 Alloy 20 Seamless Tubes Corrosion-Resistant Cold-Drawn Tubes for Heat Exchangers Boilers

Brand Name:	YUHONG
Model Number:	ASTM B729 Alloy 20
MOQ:	500KG
Price:	AS PER DETIALS
Packaging Details:	Plywooden case with Iron Frame
Payment Terms:	T/T,L/C

Detail Information

Product Description

Detail Information

Place of Origin:

CHINA

Certification:

ISO 9001

Supply Ability:

4150 Ton Per Month

Highlight:

ASTM B729 Alloy 20 Seamless Tubes

Corrosion-Resistant Alloy 20 Seamless Tubes

Heat Exchangers Alloy 20 Seamless Tubes

Product Description

ASTM B729 Alloy 20 Seamless Tubes

Cold-Drawn Precision Tubes for Demanding Thermal Applications

Material & Performance Highlights

Alloy 20 (UNS N08020) is a nickel-iron-chromium superalloy renowned for its exceptional resistance to sulfuric acid, chloride stress corrosion, and oxidizing environments. Ideal for heat exchangers, boilers, and chemical processing systems operating under extreme conditions.

Key Features

Property	Value
Standards	ASTM B729, ASME SB729, EN 10216-5
Outer Diameter	6mm - 150mm (Custom Sizes Available)
Wall Thickness	1mm - 20mm
Surface Finish	Cold-Drawn, Annealed, Pickled & Passivated

Mechanical Properties

Property	Minimum Value
Tensile Strength	620 MPa
Yield Strength	300 MPa
Elongation (%)	30%
Hardness (Rockwell B)	≤ 100 HRB

Chemical Composition (%)

Element	Ni	Cr	Fe	Mo	Cu	C	Mn	Si
ASTM B729	32-38	19-21	Bal.	2-3	3-4	≤0.07	≤2.0	≤1.0

Manufacturing Process

Raw Material Control: Sourced from ISO-certified mills.
Cold Drawing: Enhances dimensional accuracy (±0.05mm) and surface integrity.
Solution Annealing: 1050°C - 1150°C for stress relief and corrosion resistance.
NDT Testing: 100% Eddy Current, Hydrostatic, and Ultrasonic Inspection.

Applications

Heat Exchanger Bundles in Petrochemical Plants
Boiler Superheaters & Condensers
Sulfuric Acid Concentration Systems
Pharmaceutical Reactor Cooling Loops

Why Choose YUHONG's Alloy 20 Tubes?

55 Production Lines: Guarantee 15-day lead time for bulk orders.
Zero Leakage Warranty: Backed by EN 10204 3.1 Certification.
Customization: Laser-cut threads, flared ends, or pre-bent shapes.

FAQ

Q: How does Alloy 20 compare to 316L in chloride environments?

A: Alloy 20 offers 3x higher pitting resistance per ASTM G48 testing.

Q: Maximum service temperature?

A: 550°C (1022°F) for continuous operation.

Q: MOQ for customized sizes?

A: 500 kg with flexible packaging (Wooden Crates/Plastic Caps).

About YUHONG Holding Group

With 20+ years as a top 5 Chinese finned tube exporter, YUHONG serves 80+ countries through:

55 Advanced Lines: Covering finned tubes, seamless boiler tubes, and alloy pipes.
20,000㎡ Facility: Equipped with CNC cold pilger mills and automated annealing furnaces.
Global Certifications: ISO 9001, PED 2014/68/EU, and API 5CT.

Explore our full range at www.steelfintube.com or contact jimmy@steelseamlesspipe.com for technical support.

Tags:

Products Details

Home > Products >

Boiler Tube

ASTM B729 Alloy 20 Seamless Tubes Corrosion-Resistant Cold-Drawn Tubes for Heat Exchangers Boilers

All Category

ASTM B729 Alloy 20 Seamless Tubes Corrosion-Resistant Cold-Drawn Tubes for Heat Exchangers Boilers

Brand Name:	YUHONG
Model Number:	ASTM B729 Alloy 20
MOQ:	500KG
Price:	AS PER DETIALS
Packaging Details:	Plywooden case with Iron Frame
Payment Terms:	T/T,L/C

Detail Information

Product Description

Detail Information

Place of Origin:

CHINA

Brand Name:

YUHONG

Certification:

ISO 9001

Model Number:

ASTM B729 Alloy 20

Minimum Order Quantity:

500KG

Price:

AS PER DETIALS

Packaging Details:

Plywooden case with Iron Frame

Delivery Time:

20-80 days

Payment Terms:

T/T,L/C

Supply Ability:

4150 Ton Per Month

Highlight:

ASTM B729 Alloy 20 Seamless Tubes

Corrosion-Resistant Alloy 20 Seamless Tubes

Heat Exchangers Alloy 20 Seamless Tubes

Product Description

ASTM B729 Alloy 20 Seamless Tubes

Cold-Drawn Precision Tubes for Demanding Thermal Applications

Material & Performance Highlights

Key Features

Property	Value
Standards	ASTM B729, ASME SB729, EN 10216-5
Outer Diameter	6mm - 150mm (Custom Sizes Available)
Wall Thickness	1mm - 20mm
Surface Finish	Cold-Drawn, Annealed, Pickled & Passivated

Mechanical Properties

Property	Minimum Value
Tensile Strength	620 MPa
Yield Strength	300 MPa
Elongation (%)	30%
Hardness (Rockwell B)	≤ 100 HRB

Chemical Composition (%)

Element	Ni	Cr	Fe	Mo	Cu	C	Mn	Si
ASTM B729	32-38	19-21	Bal.	2-3	3-4	≤0.07	≤2.0	≤1.0

Manufacturing Process

Raw Material Control: Sourced from ISO-certified mills.
Cold Drawing: Enhances dimensional accuracy (±0.05mm) and surface integrity.
Solution Annealing: 1050°C - 1150°C for stress relief and corrosion resistance.
NDT Testing: 100% Eddy Current, Hydrostatic, and Ultrasonic Inspection.

Applications

Heat Exchanger Bundles in Petrochemical Plants
Boiler Superheaters & Condensers
Sulfuric Acid Concentration Systems
Pharmaceutical Reactor Cooling Loops

Why Choose YUHONG's Alloy 20 Tubes?

55 Production Lines: Guarantee 15-day lead time for bulk orders.
Zero Leakage Warranty: Backed by EN 10204 3.1 Certification.
Customization: Laser-cut threads, flared ends, or pre-bent shapes.

FAQ

Q: How does Alloy 20 compare to 316L in chloride environments?

A: Alloy 20 offers 3x higher pitting resistance per ASTM G48 testing.

Q: Maximum service temperature?

A: 550°C (1022°F) for continuous operation.

Q: MOQ for customized sizes?

A: 500 kg with flexible packaging (Wooden Crates/Plastic Caps).

About YUHONG Holding Group

With 20+ years as a top 5 Chinese finned tube exporter, YUHONG serves 80+ countries through:

55 Advanced Lines: Covering finned tubes, seamless boiler tubes, and alloy pipes.
20,000㎡ Facility: Equipped with CNC cold pilger mills and automated annealing furnaces.
Global Certifications: ISO 9001, PED 2014/68/EU, and API 5CT.

Explore our full range at www.steelfintube.com or contact jimmy@steelseamlesspipe.com for technical support.

Tags:

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Embedded G Fin Tube

Extruded Fin Tube

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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

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Nickel Alloy Steel Boiler Tube

Stainless Steel Boiler Tube

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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