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ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack
ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack
ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack
ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack
ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack
ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack
ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack
ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack
ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack
ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack
Specifications
Brand Name :
YUHONG
Model Number :
ASME SB111 C68700
Certification :
ABS, LR, GL, DNV, NK, TS, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015
Place of Origin :
China
MOQ :
500KGS
Price :
Negotiable
Payment Terms :
L/C,T/T
Supply Ability :
Accdording to customer's request
Delivery Time :
Depends on quantity
Packaging Details :
Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Product Name :
U Bend Seamless Tube
Specification&Material :
ASME SB111 C68700
Code :
O61
Surface :
Polished
Type :
Seamless
Application :
Heat exchanger, Condencer, Evaporator...
Description
  • YUHONG brand goods have been already exported to more than 85 countries With more than 35 years' experience, because of strict quality control policy, excellent sales service, delivery on time. YUHONG won more and more new clients and got more and more repeat orders from old clients, in YUHONG People's mind: Quality is First Important!

ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack

ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube is a seamless tube manufactured from C68700 arsenical aluminum brass in compliance with ASME SB111 standard. It is produced by seamless cold‑drawn or hot‑extruded process followed by U‑bending. The material contains copper, zinc, aluminum, and a trace amount of arsenic, offering excellent resistance to seawater corrosion, impingement attack, and dezincification. This U‑bend seamless tube is widely used in heat exchangers, condensers, and tube bundles for marine, power plant, and desalination applications.


UNS/ASTM DIN GB BS JIS ISO GOST
C68700 CuZn20Al2 HAl77-2 CZ110 C6870 CuZn20Al2 ЛAМЦ77-2-0.05


1.Chemical & Mechanical Properties

ASME SB111 C68700 Chemical Composition (%)
Cu Al Pb Fe Zn

As
76.0-79.0 1.8-2.5 ≤ 0.07 ≤ 0.06% REM 0.02-0.06

Mechanical Properties

Temper Designation Annealingtemperature, ℃ Tensile Strength, min Yield Strength, min

Hardness

Vickers
Code Name ＞650 ksi Mpa ksi Mpa ≤150
O61 Annealed 50 345 18 125



2. Key Advantages

  • Aluminum forms a dense protective film of aluminum oxide on the surface, which can resist the erosion of seawater and brackish water for a long time.
  • It is particularly suitable for high-flow-rate cooling water environments, and can effectively avoid pipe wall thinning or perforation caused by high-speed fluid impact.
  • Adding trace amounts of arsenic (As) inhibits the selective dissolution of zinc in brass, preventing the formation of a loose copper skeleton and the risk of leakage.
  • With a thermal conductivity of approximately 100–121 W/(m·K), significantly higher than that of stainless steel, it can effectively improve the heat exchange efficiency of heat exchangers.
  • Suitable for alternating temperature or pressure conditions, reducing the risk of cracking failure during long-term operation.
  • It outperforms ordinary brass, and its corrosion resistance life is close to that of higher-cost copper-nickel alloys or stainless steel, but its price is much lower.

3. Key Applications
  • Shipbuilding and Marine Engineering: Used in seawater cooling systems, condensers, and heat exchangers.
  • Thermal and Nuclear Power Generation: Used in heat exchange equipment such as water heaters and oil coolers in coastal power plants.
  • Seawater Desalination: Widely used in multi-stage flash evaporation, reverse osmosis, and other seawater desalination equipment.
  • Petrochemical Industry: Used in process pipelines for treating salty or other corrosive media.

4. Test
  • Mechanical Testing: Tensile test, Hardness Test, Flattening Test, Flaring Test
  • Chemical Analysis – Spectro Analysis
  • Positive Material Identification – PMI Testing
  • Flattening Test
  • Micro and MacroTest
  • Pitting Resistance Test
  • Intergranular Corrosion (IGC) Test

*Mechanical Testing
ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement AttackASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack
ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement AttackASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack
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ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack

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Product Detail
Brand Name :
YUHONG
Model Number :
ASME SB111 C68700
Certification :
ABS, LR, GL, DNV, NK, TS, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015
Place of Origin :
China
MOQ :
500KGS
Price :
Negotiable
Contact Supplier
ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack
ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack
ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack
ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack
ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack

YUHONG HOLDING GROUP CO., LTD

Verified Supplier
3 Years
ningbo
Since 1990
Business Type :
Manufacturer, Importer, Exporter, Trading Company, Seller, Other
Main Products :
Stainless Steel Heat Exchanger Tube, Studded Tube, Duplex Stainless Steel Heat Exchanger Tube
Total Annual :
50M-70M
Employee Number :
50~800
Certification Level :
Verified Supplier
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