Copper Alloy Tube
It is manufactured from alloy C23000 which is comprised of approximately 85% Copper (Cu) with no greater than 0.05% Lead (Pb) and 0.05% Iron (Fe) and the remainder Zinc (Zn). Available sizes are 1/8" to 12" diameters in both regular and extra strong wall thickness.
Why Choose Us?
Rich Experience
Guilin Lijia Metals Co., Ltd, established in 1976. Our company is a modern nonferrous-metals processing enterprise engaging in manufacturing copper and copper alloy (brass, copper-nickel and bronze) tubes/pipes/coils, rods/bars, profiles and finned tubes.
Professional Team
Our company has 10 functional management departments and 2 production workshops with 515 employees including 150 professional technicians and 30 technical engineers with middle and high rank titles.
Quality Control
We can meet different production specifications of copper and brass tube according to ASTM, EN, BS, DIN, JIS and so on.
Advanced Equipment
Guilin Lijia has 130 sets processing and testing equipments, mainly are followings: mainly are followings,22MN water-seal extruding machine introduced from Japan, Roller bright annealing furnace introduced from Germany, Coils drawing machine introduced from Britain, Casting furnaces, Rolling machines and drawing machines, Spectrum analyzer introduced from Switzerland.
Corrosion Resistance of Copper Alloy Tube
Copper alloy tube and pipes, such as Al-brass, 90-10 Cu-Ni and others are widely used in tubular heat exchangers and piping systems. The medium flowing through the tubes is in general seawater, brackish water or fresh water. Under unfavourable conditions chloride-containing water can initiate corrosion on tube and plate material,
Particularly if the water is polluted or contains solid particles. In such cases suitable counter-measures should be applied.
To achieve adequate corrosion resistance the water side of the copper alloy tube requires a protective layer which is formed in clean, oxygen containing seawater after a period of 8 to 12 weeks. Forming and maintaining this protective layer is crucial for optimum life of the tube material and for troublefree operation. Excellent performance is to be expected when the tube quality and design, fabrication and operation of the equipment are in accordance with the engineering standards.It
should be pointed out that Al-Brass, 90-10 Cu-Ni and 70-30 Cu-Ni show also good corrosion resistance in hot deaerated seawater and brines existing in Multi Stage Flash -MSF- desalination plants. Occasionally failures on tubes are detected shortly after they entered service.
Investigations of these early failures have revealed that most of them were caused by improper commissioning and / or improper operating practices. This applies particularly to heat exchanger tubes whilst piping systems show much less susceptibility or none at all. To gain full benefit from copper alloys and to avoid interruptions in service, some rules derived from practical experience are described.
Depending on alloy type, copper alloy tubes are supplied either with a bright metallic surface (CuNilO) or with a thin, firmly attached oxide layer (Al brass). Both finish types are common and allow the formation of a protective layer. Carbon films on the tube surface, remaining from production (caused by lubricants during annealing) or from other sources have to be avoided, as they will initiate corrosion.
The properties of copper in plumbing provide a range of benefits to homeowners. It's a durable metal, providing between 50-70 years of service before it needs to be replaced.
Manufacturing copper tubing or pipe releases fewer emissions into the environment, and it can be completely recycled, making it very environmentally friendly. The light weight of the pipes makes them easy to handle and install.
The pipes are fire resistant, giving you one less material to worry about during a house fire. Unlike many other types of metal pipe, copper tubing and piping doesn't contaminate the water that runs through it. Finally, copper is easy to work with, especially if you take into account the newer copper press fitting options that are available on the market that can minimize your installation time.
Electrical Conductivity of Copper Alloy Tube
The electrical conductivity of copper alloy tube is often used as a benchmark of purity. The highest conductivity is obtained with pure copper. For ease of comparison, the conductivity of the purest commercial copper was set as the International Annealed Copper Standard (IACS) some years ago. 100% IACS corresponds to 0.5800 microhm?¹.cm?¹. Modern refining techniques now routinely produce copper of higher purity, which exceeds 100% IACS.
● C11000
Electrolytic tough pitch copper, is the most commonly used metal in the group, with electrical conductivity of 100% IACS or better. It is made by melting cathode copper in a moderately reducing atmosphere, and may contain up to about 0.05% of oxygen as cuprous oxide. When heated above about 370°C in the presence of hydrogen (e.g. a gas flame) it may become hydrogen embrittled. C11000 is unsuitable for gas welding and high temperature brazing.
● C10100 and C10200
Oxygen-free copper alloys, are made by melting cathode copper in low hydrogen, reducing conditions, without the addition of a deoxidising agent. These metals have high conductivity, exceptionally high ductility, low gas permeability, freedom from hydrogen embrittlement and low outgassing in a vacuum.
● C10300
Oxygen-free extra low phosphorus copper alloy, is made by melting cathode copper under less critical conditions, deoxidising with phosphorus and controlling for a low residual phosphorus. Mechanical properties are similar to C10100 and C10200 at lower cost.
● C11600
Silver bearing tough pitch copper alloys, are used where resistance to softening in the cold-worked condition above about 200°C is required. Silver does not reduce the conductivity of the copper significantly.
● C12200
Phosphorus deoxidised copper, has been made weldable and brazeable by deoxidising with phosphorus. It is used for flat products, tubing and similar applications. Phosphorus significantly reduces the conductivity, which may go as low as 70% IACS. C14210, Phosphorus deoxidised arsenical copper alloys, also contains a small quantity of arsenic, which raises the softening temperature and significantly improves corrosion resistance in waters.
● C14700
Sulphur bearing copper, has a sulphur addition to improve machinability. The reduction of conductivity is slight, to about 95% IACS.
Advantages of Copper Alloy Tube
Strong, long lasting, copper alloy tube is the leading choice of modern contractors for plumbing, heating and cooling installations in all kinds of residential and commercial buildings. The primary reasons for this are:
Copper alloy is economical.
The combination of easy handling, forming and joining permits savings in installation time, material and overall costs. Long-term performance and reliability mean fewer callbacks, and that makes copper alloy the ideal, cost-effective tubing material.
Copper alloy is lightweight.
Copper alloy tube does not require the heavy thickness of ferrous or threaded pipe of the same internal diameter. This means copper alloy costs less to transport, handles more easily and, when installed, takes less space.
Copper alloy is formable.
Because copper alloy tube can be bent and formed, it is frequently possible to eliminate elbows and joints. Smooth bends permit the tube to follow contours and corners of almost any angle. With soft temper tube, particularly when used for renovation or modernization projects, much less wall and ceiling space is needed.
Copper alloy is easy to join.
Copper alloy tube can be joined with capillary fittings. These fittings save material and make smooth, neat, strong and leak-proof joints. No extra thickness or weight is necessary to compensate for material removed by threading.
Copper alloy is safe.
Copper alloy tube will not burn or support combustion or decompose to toxic gases. Therefore, it will not carry fire through floors, walls and ceilings. Volatile organic compounds are not required for installation.
Copper alloy is dependable.
Copper alloy tube is manufactured to well-defined composition standards and marked with permanent identification so you know exactly what it is and who made it. It is accepted by virtually every plumbing code.
Copper alloy is long-lasting.
It has excellent resistance to corrosion and scaling, high mechanical strength, high-temperature resistance and lifetime resistance to uv degradation. Copper alloy assures long, trouble-free service, which translates to satisfied customers and systems that last.
Copper alloy is 100% recyclable.
Copper alloy stands alone as an engineering material that can be recycled over and over without degradation in content or properties. This combined with copper alloy's proven durability means that no copper alloy used in a building today needs to enter a landfill.
Applications of Copper Alloy Tube
Copper alloy tubes are extensively used in marine applications such as seawater cooling pipes, desalination plants, and shipbuilding. Copper-nickel alloys have excellent resistance to seawater corrosion and biofouling, making them ideal for use in saltwater environments. They are also used in desalination plants where seawater is turned into freshwater, thanks to their corrosion-resistant properties.
Heat exchangers
Copper alloy tubes are known to be excellent heat exchangers owing to their thermal conductivity and ability to absorb and transfer heat efficiently. They are used in steam condensers, cooling towers, and heat exchangers in various industries. In power plants, copper alloy tubes are extensively used in boiler feedwater systems, thanks to their excellent resistance to corrosion and erosion.
Transportation
Copper alloy tubes are used in various forms of transportation due to their strength and corrosion-resistant properties. They are used in brake lines, fuel lines, and hydraulic tubing in aircraft, ships, and cars. Copper-nickel pipes are known for their corrosion resistance, which makes them perfect for use in harsh environments.
Oil and gas industry
The oil and gas industry extensively uses copper-nickel pipes in various applications, including offshore platforms, oil rigs, refineries, and pipelines. Copper-nickel alloys are known for their ability to withstand corrosion and erosion, making them ideal for use in harsh environments. They are also used in the production of heat exchangers, condensers, and coolers.
Steam piping
Copper alloy tubes are extensively used in steam piping, where they offer excellent resistance to corrosion and erosion. They are mainly used in power plants in the feedwater systems and steam turbine condensers. Copper alloy tubes are also used in other industries such as chemical and petrochemical industries, where they are used in piping systems that carry steam and other high-temperature fluids.
Common Causes of Copper Alloy Tube Corrosion
Several factors can contribute to copper alloy tube corrosion. Multiple factors often come together to accelerate corrosion. Here are some common causes
Excessive flux residue: Leftover soldering flux can be corrosive if not flushed out properly.
High water velocity: Excessively fast water flow can wear down the protective film inside the pipe, leading to erosion-corrosion.
Improper pipe preparation: Failing to prepare the pipe ends correctly can result in local turbulence and corrosion.
Iron deposits from water heaters: Rust particles from deteriorating water heater anode rods can lead to internal pipe corrosion.
Stagnant water: Water that sits in pipes without flowing can encourage corrosion.
Water chemistry issues: Factors such as pH levels, mineral content, and the presence of certain chemicals in water can affect the protective film inside your pipes. Acidic water or water with high chloride content can be particularly corrosive to copper. Water chemistry issues typically affect entire neighborhoods or regions, not just individual homes.
Our Factory
Guilin Lijia Metals Co., Ltd, established in 1976, is a key enterprise of copper fabrication in Guangxi, China. Our enterprise, as a key exporting enterprise in Guangxi, is the council member of China Nonferrous Metals Association. We are located in Tieshan Industrial Park of Guilin High and New Technology Industrial Development District.
Our company is a modern nonferrous-metals processing enterprise engaging in manufacturing copper and copper alloy (brass, copper-nickel and bronze) tubes/pipes/coils, rods/bars, profiles and finned tubes. Persevering in development orientation of "special, innovation, shaped and preciseness", we have accumulated more than 40 years' manufacturing experience and held yearly capability of 16,000 tons.
Insisting on global business strategy and worldwide marketing net, we started exporting business since 1998 and have steady market in USA, Europe, Australia, Canada and Southeast Asia.
Our corporate culture slogans are "teamwork, perseverance, preciseness, sincerity and innovation".
Registered capital of Guilin Lijia reaches 187 million. Our shareholders include Guangxi Hanggui Industrial Co., Ltd (52.52%), China Orient Assets Management Co., Ltd (34%) and Guilin National Asset Investment Management Company (13.48%).
Our certificate
Guilin Lijia has a professional management system, which is certified by ISO 9001: 2015, ISO 14001: 2015 and OHSAS 18001: 2007.
Our quality assurance system is certified by TUV SUD Industrie Service GmbH in accordance with the Pressure Equipment Directive 2014/68/EU, Annex I, Section 4.3, AD 2000-Merkblatt W 0 as well as EN764-5, Para. 4.2.
Besides, we also get Certificate of Works Approval authorized by China Classification Society.
Our Intellectual Property Management System is in accordance with GB/T 29490-2013.
FAQ
Q: What is copper alloy pipe?
Q: Why are copper alloy tubes useful?
Q: Is copper alloy tube corrosion-resistant?
Q: What are the most important copper alloy tubes?
Q: Can copper alloy tubes be recycled?
Q: What can copper alloy tube be used for?
Q: Is copper alloy tube durable?
Q: What is the difference between copper and copper alloy tube?
Q: How long does copper alloy tube last?
Q: How do you protect copper alloy tubes?
Q: How should copper alloy tube be stored?
Q: Does copper alloy tube rust?
Q: How to tell copper alloy tube from copper?
Q: Is copper alloy tube safe?
Q: What are the properties of copper alloy tube pipe?
Q: Is copper alloy tube safe?
Q: What destroys copper alloy tubes?
High pH (alkaline water greater than 8.5)
High levels of dissolved oxygen.
High levels of salts dissolved in the water (total dissolved solids)
Corrosion-causing bacteria such as sulfate or iron bacteria.
Q: Does copper alloy tube oxidize?
Q: How to clean copper alloy tube?
As one of the most professional copper alloy tube manufacturers and suppliers in China, we're featured by quality products and competitive price. Please rest assured to wholesale copper alloy tube for sale here from our factory. Contact us for custom service.
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