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Seawater Resistant ASTM B111 C44300 U-Bend Tubes Heat Exchanger Supplier

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Seawater Resistant ASTM B111 C44300 U-Bend Tubes Heat Exchanger Supplier

Name: Seawater Resistant ASTM B111 C44300 UBend Tubes Heat Exchanger Supplier
Brand: YUHONG
Price: 1 USD

Quality Seawater Resistant ASTM B111 C44300 U-Bend Tubes Heat Exchanger Supplier for sale

Brand Name : YUHONG

Model Number : ASTM B111 C44300

Certification : ABS, GL, DNV, NK, PED, AD2000, ISO 9001

Place of Origin : CHINA

MOQ : 300KG

Price : Negotiable

Payment Terms : L/C,T/T

Supply Ability : Ply-wooden Case /Iron Case/ Bundle with plastic Cap/Woven Case

Delivery Time : Depends on quantity

Packaging Details : 1000 tons per month

Material Grade : UNS C44300

Standard Compliance : ASTM B111 / ASME SB111

Tube Form : U-Bend (Cold Formed)

Primary Alloy : Arsenical Admiralty Brass

Biofouling Resistance、 : ASTM D6990 Certified

Seawater Approval : MIL-T-16420 Compliant

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ASTM B111 C44300 U-Bend Tubes: High-Performance Admiralty Brass for Critical Heat Transfer

Product Overview of C44300 U-Bend Tubes

C44300 U-Bend Tubes are engineered from arsenical admiralty brass (UNS C44300), offering exceptional seawater corrosion resistance and biofouling mitigation. These cold-formed U-bend tubes meet ASTM B111 specifications for seamless condenser and heat exchanger systems, providing reliable thermal conductivity (≥80 W/m·K) in high-salinity, high-temperature environments up to 150°C. Ideal for power plants, desalination units, and marine applications.

Chemical Composition of C44300 U-Bend Tubes

Element	Cu	Zn	Sn	As	Pb (max)	Fe (max)	Impurities (max)
% Range	70.0–73.0	Rem.	0.9–1.2	0.02–0.06	0.07	0.06	0.15

Global Equivalent Grades

Standard	Equivalent Grade	Key Similarities
EN	CW706R	Matching Cu/Zn/Sn ratios, seawater approval
JIS	C4430B	Identical As content, condenser applications
DIN	CuZn28Sn1As	Corrosion performance parity
GB	HSn70-1A	Comparable mechanical properties

Mechanical Properties of C44300 U-Bend Tubes

Property	Value	Test Method
Tensile Strength	≥325 MPa (47 ksi)	ASTM E8/E8M
Yield Strength (0.5% ext.)	≥105 MPa (15 ksi)	ASTM E8/E8M
Elongation (50mm)	≥40%	ASTM E8/E8M
Hardness (Rockwell B)	45–65 HRB	ASTM E18
U-Bend Specific:
Bend Radius Tolerance	±1.5 × OD	ASTM B111 Fig. 3
Ovality Post-Bending	≤8% of OD	ASTM B111

Precision Tolerances for U-Bend Tubes

Parameter	Tolerance (±)	Notes
Outer Diameter (OD)	0.10 mm (≤25mm OD)	Measured at straight sections
	0.15% (＞25mm OD)
Wall Thickness	+20% / -10%	Min. wall at bend apex maintained
U-Bend Leg Length	±3.0 mm	Laser-verified pre-assembly
Bend Angle	±1.5°	Per tube bundle fitment specs
Straightness	1.5 mm/m	Ensures no flow obstruction

Marine & Industrial Applications

Primary Use Cases:

Power Generation: Condenser tubes in nuclear/coal-fired plants (resists ammonia attack)

Desalination: Multi-stage flash (MSF) evaporator U-bends

Marine Systems: Shipboard heat exchangers, oil coolers

Chemical Processing: Sulfuric acid coolers, refinery overhead condensers

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