Baoji Ruihenghua Titanium Metal Composite New Materials Co., Ltd. is one of the leading manufacturers and suppliers of copper clad steel pipe in China. If you're going to buy customized copper clad steel pipe made in China, welcome to get more information from our factory. For price consultation, contact us.
Copper Clad Steel Pipe
● Layered Structure: outer layer of high-conductivity and corrosion-resistant copper + inner layer of seamless carbon steel pipe pressure-bearing reinforcement, with full-circumferential atomic-level metallurgical bonding.
● Material Grade: Outer layer C11000 ETP copper, inner layer A53 Gr.B/ 20# seamless carbon steel pipe.
● Execution Standards: Copper layer conforms to ASTM B188, steel pipe conforms to ASTM A53/A106, and the interfacial shear strength of the explosive composite process exceeds industry benchmarks.
● Interface Performance: Interface shear strength ≥140MPa, 100% bonding throughout the circumference; flaring rate 15%, no delamination or cracking when flattened to 1/3 of the outer diameter.
● Core Performance: It combines the excellent thermal and electrical conductivity and atmospheric corrosion resistance of copper with the high strength and high pressure resistance of steel, reducing the cost by more than 40% compared to pure copper pipes under the same pressure.
● Thermal Performance: The interfacial thermal resistance is negligible, the overall thermal conductivity is close to that of a pure copper tube, and there is no significant loss in heat exchange efficiency.
● Pressure Bearing Capacity: The inner carbon steel layer is pressure-bearing, and the maximum pressure bearing capacity at room temperature can reach 16MPa, which is 2-3 times that of pure copper pipes of the same wall thickness.
● Brand: RHHT i.
● Place Of Origin: Baoji, Shaanxi Province, China's Titanium Valley.
Product Introduction
Copper clad steel pipe is a high-performance bimetallic composite pipe manufactured using explosive welding and precision cold drawing processes. High-purity copper is uniformly coated on the outer layer of a seamless carbon steel pipe, achieving a 360° circumferential atomic-level metallurgical bond. It combines the excellent thermal and electrical conductivity and corrosion resistance of copper with the high strength and pressure resistance of carbon steel. Unlike pure copper pipes and ordinary galvanized steel pipes, the interfacial thermal resistance of the metallurgical bond is extremely low, resulting in heat exchange efficiency close to that of pure copper pipes, while its pressure resistance is 2-3 times that of pure copper pipes of the same wall thickness. Compared to pure copper pipes, material costs are reduced by 40%-60% while meeting heat exchange and electrical conductivity requirements, and impact and deformation resistance are significantly improved. Compared to ordinary steel pipes, thermal and electrical conductivity are improved several times, and the outer copper layer has superior resistance to atmospheric and aqueous corrosion. The product is widely used in shell and tube heat exchangers, power busbars, pressurized fluid transportation, grounding bushings, and other fields, making it a cost-effective core pipe material for pressurized, conductive, and heat exchange applications.
Product Parameter
Implement International Standards System
● Copper cladding material standard: ASTM B188 (Standard Specification for Seamless Copper Water and Gas Pipes).
● Carbon steel base standard: ASTM A53 / ASTM A106 Gr.B (Seamless carbon steel pipe standard specification).
● Process performance tests: GB/T 242 flaring test, GB/T 246 flattening test, ASTM B968 pipe flattening test.
● Acceptance and quality assurance standards: EN 10204 3.1 Original manufacturer's material certificate and hydrostatic test report.
Standard Material Grades (Internationally Recognized Grades)
|
Layered Structure |
Optional International Brands |
Functional And Operating Condition Adaptation |
|
Copper Outer Layer |
C11000 ETP Copper |
The thermally and electrically conductive functional layer is designed to withstand corrosion in both atmospheric and aqueous media, and its thickness can be adjusted to control conductivity and heat transfer efficiency. |
|
Steel Inner Layer (Carbon Steel Inner Layer) |
A53 Gr.B/ A106 Gr.B Seamless Carbon Steel |
Provides structural strength and pressure resistance, reduces overall cost, and is suitable for high-pressure fluids and stress conditions. |
Product Features and Applications
Product Advantages
Metallurgical bonding with low thermal resistance and excellent heat exchange efficiency: Explosion-driven atomic-level metallurgical bonding is achieved, with no gaps or oxide layers at the interface, and the thermal resistance is negligible. The overall thermal conductivity is close to that of pure copper tubes, which completely solves the industry pain points of high interface thermal resistance and low heat exchange efficiency of mechanical composite tubes. When used in heat exchange equipment, its energy efficiency performance far exceeds that of traditional composite tubes.
High strength and high pressure resistance, outstanding safety performance: The seamless carbon steel inner layer provides excellent structural strength and pressure resistance. Under the same wall thickness, the pressure resistance is 2-3 times that of pure copper pipe. It can be adapted to harsh working conditions such as high pressure fluid and impact load, avoiding the risk of deformation and pipe bursting of pure copper pipe, and greatly improving the safety of equipment operation.
High cost-performance ratio and lower overall cost: Copper is used only in the outer functional layer, while the main body is supported by low-cost carbon steel. Compared with pure copper tubes, it saves 40%-60% of material costs for the same heat exchange/conductivity. At the same time, it is lighter, easier to install, and has lower long-term maintenance costs, resulting in significant overall economic benefits.
Excellent processing performance and adaptable to various molding processes: high interface bonding strength, supports various deep processing of tubes such as flaring, flanging, cold bending, welding, and tube expansion. The copper layer does not crack or fall off after processing, and can be directly made into finished products such as heat exchanger tube bundles, bent tubes, and special-shaped tubes to meet the installation needs of various equipment.
With excellent corrosion resistance and conductivity, it has a wide range of applications: The outer copper layer has both good conductivity and resistance to corrosion from air, fresh water and soil. It can be used as heat exchange pipe, as well as high current conductive busbar pipe and grounding bushing. One pipe can meet multiple performance requirements and is suitable for multiple industries and scenarios.
Application Areas
Heat exchange equipment: shell and tube heat exchangers, radiators, condensers, coolers, waste heat recovery devices, suitable for HVAC, chemical and refrigeration industries.
Power industry: high-current enclosed busbars, grounding bushings, switchgear conductive busbars, and cooling water pipes for high-power equipment.Fluid transportation: pressurized water supply and drainage pipes, petrochemical process pipelines, seawater desalination pipelines, hydraulic system oil pipes.
Metallurgical and chemical industries: Electrolytic cell cooling water pipes, reactor heat exchange tube bundles, and corrosion-resistant process piping.
Construction engineering: Water supply and drainage pipes for high-end buildings, lightning protection grounding down conductors, and horizontal grounding pipes for grounding grids.
Rail transit: vehicle cooling system piping, signal system grounding bushings, and track conductive components.
Product Details
Interface bonding rate
100% UT inspection in the entire circumference, bonding rate ≥99.5%, no local unbonded defects.
01
Water pressure test
Each piece is subjected to a water pressure test at 1.5 times the working pressure, and the pressure is maintained for 30 seconds without leakage or deformation.
02
Process performance
15% flaring rate, no cracks, no delamination; flattened to 1/3 outer diameter, no cracks, no copper layer peeling.
03
Straightness
Standard grade ≤1.0mm/m, Precision grade ≤0.5mm/m.
04
Product Supporting Documents
Authoritative International Qualification Certificates
ASTM B188 and ASTM A53 material testing reports, and original manufacturer material certificates in EN 10204 3.1 for each batch.
ISO 9001 Quality Management System Certification, ISO 14001 Environmental Management System Certification.
Third-party SGS test report on the bonding strength, thermal conductivity , and hydrostatic test of the dual interfaces.
The pressure pipeline component testing qualification meets the material requirements for pressure equipment.
thoughtful service
Packaging Standards (For Export By Sea)
Each pipe end is fitted with a plastic cap, and the surface is covered with a PE protective film and individually wrapped with pearl cotton to prevent the end from being bumped or scratched.
The entire batch is packaged in solid wood export crates that are bundled and fumigated, with shock-absorbing foam filling inside to prevent movement and deformation during transportation.
The wooden crates are labeled with material type, specifications, quantity, gross weight, and moisture-proof/lifting markings, suitable for all scenarios including sea, land, and air transport.
Professional Consultation Q&A
Q1: When Copper clad steel pipes undergo flaring, cold bending, or expansion processes, will the copper layer crack or peel off ?
A1: Under normal processing conditions, copper layer cracking and peeling will not occur in pipe processing. Our products use an explosive metallurgical bonding process, with an interfacial shear strength ≥140MPa, far exceeding that of mechanically composite and electroplated composite pipes. Furthermore, they undergo performance testing before leaving the factory, with a 15% flaring rate and flattening to 1/3 of the outer diameter. Two points to note during processing: First, the cold bending radius should not be less than 3 times the outer diameter of the pipe; an excessively small bending radius can lead to excessive local stress and cracking of the copper layer. Second, the expansion rate should be controlled within 10% to avoid excessive expansion leading to interfacial peeling. For special forming processes such as large-angle bends and large-proportion flaring, we can complete customized processing before leaving the factory, ensuring processing quality and interfacial integrity.
Q2: Can Copper clad steel pipes be used for transporting pressurized fluids, and what is the maximum pressure they can withstand?
A2: Yes, it can be used for pressurized fluid transportation. The maximum working pressure at room temperature can reach 16MPa. The specific pressure-bearing capacity is determined by the steel pipe wall thickness, pipe diameter, and operating temperature. The inner seamless carbon steel layer is the main pressure-bearing structure, while the copper layer only serves for corrosion resistance and heat conduction. The pressure-bearing design is based on the steel pipe parameters. We will calculate the wall thickness according to GB/T 20801 or ASME B31.3 standards to ensure that the safety factor meets the requirements. Before leaving the factory, each pipe undergoes a hydrostatic test at 1.5 times the working pressure, holding the pressure for 30 seconds without leakage or deformation, fully meeting the safety requirements for pressurized fluid transportation.
Q3: When used in heat exchange equipment, what are the core performance differences between Copper clad steel pipes and pure copper pipes or stainless steel pipes?
A3: The core differences among the three are concentrated in three dimensions: heat exchange efficiency, pressure resistance, and procurement cost. Pure copper tubes have the highest heat exchange efficiency, but weak pressure resistance, poor impact resistance, and extremely high material costs. They are also prone to deformation and bursting under high-pressure conditions. Stainless steel tubes have good pressure resistance and moderate cost, but their thermal conductivity is only about 1/20 that of copper, resulting in very low heat exchange efficiency. Copper-clad steel tubes combine the advantages of both through metallurgical integration. Their interfacial thermal resistance is negligible, and their overall heat exchange efficiency is close to that of pure copper tubes. Their pressure resistance is 2-3 times that of pure copper tubes of the same wall thickness, and their material cost is only 40%-60% of that of pure copper tubes. They are the most cost-effective solution for high-pressure heat exchange scenarios, and are especially suitable for industrial heat exchangers and coolers that require both high heat exchange efficiency and pressure resistance.
Latest company news
The full range of copper-steel composite materials has achieved mass production, covering three major categories: bars, tubes, and conductive beams.
Baoji Ruihenghua Titanium Metal Composite New Materials Co., Ltd., based on 20 years of experience in non-ferrous metal composite processing in China's Titanium Valley, has officially expanded its copper-based composite material product matrix. The three core product lines of electrolytic conductive beams, copper-clad steel bars, and copper-clad steel pipes have all achieved standardized mass production.
All products are manufactured using explosive welding and precision forming processes, achieving a complete metallurgical bond at the interface, with shear strength exceeding industry benchmarks. The electrolytic conductive beam serves the dual function of supporting the electrode plates and transmitting high current, saving over 30% more energy compared to pure titanium beams. Copper-clad steel rods are primarily used for lightning protection grounding and electroplating fixtures, with costs 40%-60% lower than pure copper rods. Copper-clad steel pipes are designed for heat exchange and pressurized fluid transport, with a pressure-bearing capacity 2-3 times that of pure copper pipes and heat exchange efficiency approaching that of pure copper pipes. Currently, the company's annual production capacity of copper-steel composite series reaches 800 tons, covering all specifications from φ5mm to φ219mm, providing one-stop copper-based composite material solutions for customers in the global hydrometallurgy, power, heat exchange, and petrochemical industries.
Full-scenario customization service launched, providing one-stop supply from base materials to finished components.
In response to the diverse working conditions and needs of global customers, the company has officially launched a full-dimensional customization service system for copper-steel composite products.
Electrolytic conductive crossbeams can be customized in terms of outer layer material (titanium/stainless steel/nickel), cross-sectional dimensions, copper core ratio, and end connection structure according to electrolyte properties and current load, providing a 1:1 match with existing electrolytic cell production lines. Copper-clad steel bars can have their copper layer thickness adjusted within the range of 0.2mm–5.0mm to precisely match the conductivity and corrosion allowance requirements of grounding, electroplating, and other scenarios. Copper-clad steel pipes support wall thickness ratios, customized pipe diameters, and deep processing such as bending, flaring, and flange welding, and can be directly used in heat exchanger tube bundles and pressure piping systems. Professional engineers provide pre-sales condition assessments and full-process technical support to help customers optimize material costs and improve equipment operating efficiency.
Copper-steel composite products are accelerating their global expansion and are being widely adopted in metallurgy, power, heat exchange, and other industries.
With its independent import and export qualifications for goods and technology, the company's copper-steel composite series has been supplied to markets in Europe, Southeast Asia, North America, and the Middle East, and has been applied in batches in multiple fields such as hydrometallurgy, power grid construction, and petrochemical heat exchange.
Each batch of products comes with an original manufacturer's material certificate conforming to EN 10204 3.1 and supports testing by third-party organizations such as SGS and BV. The company collaborates with internationally renowned logistics carriers, providing diversified delivery solutions including sea freight, air freight, and China-Europe freight trains. It also offers 24/7 online technical support, covering the entire process from on-site welding guidance and routine maintenance to troubleshooting. Leveraging its integrated industrial chain advantage from explosive composite substrates to finished product processing, the company is committed to becoming a reliable long-term supplier of copper-based composite materials to global customers.
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