Magnesium Pipe

Our Magnesium Pipe (Magnesium Alloy Tube) is a professional-grade lightweight piping material, manufactured in strict compliance with international standards including ASTM B107, ASTM B210, ISO 15522, AMS 4382, and GB/T 17731-2015. As a direct manufacturer with 17+ years of magnesium processing experience, we offer a full range of seamless and welded magnesium pipes, with fully customizable dimensions, alloy grades, surface treatments, and heat treatment processes to meet the rigorous demands of global aerospace, new energy automotive, medical, chemical anti-corrosion, and precision instrumentation industries.

1. Full Size Coverage, Customizable for All Scenarios : 

- Outer Diameter Range : 3mm (capillary) – 300mm (large diameter industrial pipe)

- Wall Thickness Range : 0.5mm (ultra-thin wall) – 30mm (thick wall structural pipe)

- Length Range : Custom cut from 50mm to 6000mm, with fixed-length and random-length options

- Strict Dimensional Tolerance Control :

 - Precision tube: Outer diameter ±0.02mm, wall thickness ±0.03mm, straightness ≤0.3mm/m

 - Standard industrial tube: Outer diameter ±0.05mm, wall thickness ±0.08mm, straightness ≤0.8mm/m

 - Fully compatible with automated assembly, bending, and CNC machining processes

2. Zero Defect Quality, 100% Non-Destructive Testing

- All seamless pipes undergo full-coverage ultrasonic flaw detection (UT) in strict accordance with ASTM E114 standards, eliminating internal - defects such as porosity, cracks, inclusions, and delamination.

- All welded pipes undergo 100% online eddy current testing (ECT) and hydrostatic pressure testing, ensuring zero weld defects, no leakage, and consistent weld strength up to 95% of the base material.

- Each pipe is marked with a unique serial number, with complete Material Test Reports (MTR), non-destructive testing reports, and batch traceability records provided for every order.

3. Uniform Mechanical Properties, Stable Performance Across Full Batches

- Advanced homogenization heat treatment and grain refinement technology ensure uniform microstructure of the pipe, with hardness deviation ≤±5HB across the full cross-section, and performance difference between longitudinal and transverse directions ≤10%.

- Mature production capacity for all mainstream magnesium alloys, with stable tensile strength (180-380MPa), yield strength (120-280MPa), and elongation (8-20%) for each batch.

- Pre-stress relief annealing before delivery, greatly reducing deformation during subsequent bending, flaring, and machining processes.

4. Professional Anti-Corrosion Surface Treatment Solutions

- Full range of optional surface treatments to solve magnesium's oxidation and corrosion challenges:

 - Basic protection: Chemical passivation, suitable for indoor dry environments, low cost, and no impact on subsequent welding.

 - Medium corrosion resistance: Anodizing (AAO), 200+ hours of neutral salt spray resistance, suitable for general indoor and outdoor applications.

 - High corrosion resistance: Micro-arc oxidation (MAO), 500+ hours of neutral salt spray resistance, suitable for harsh outdoor, marine, and industrial environments.

 - Extreme environment protection: MAO + sealing + fluorocarbon spraying composite treatment, 1000+ hours of salt spray resistance, suitable for chemical corrosion and high-humidity scenarios.

- All surface treatments comply with EU REACH and RoHS environmental standards, with food-grade and medical-grade coating options available.

5. Excellent Processability, Adaptable to All Secondary Processing

- Forming Performance : Annealed (O-temper) pipes support cold bending, flaring, necking, spinning, and deep drawing, with a minimum bending radius of 1.5x pipe outer diameter, no cracking or wrinkling during processing.

- Welding Performance : Excellent TIG/MIG welding compatibility, matching the same grade of magnesium welding wire, with stable arc, minimal spatter, and dense weld seams.

- Machining Performance : 30-50% higher machining efficiency than aluminum pipes, with low tool wear, no sticking, and excellent surface finish after CNC turning, milling, and drilling.

6. Full Alloy Grade System, Compliant with Global Industry Standards

- Covers general-purpose, high-strength, high-temperature resistant, corrosion-resistant, and medical-grade alloy systems, with mature production capacity for all mainstream magnesium alloy grades.

- Custom alloy formulation available: adjust the content of Al, Zn, Zr, and rare earth elements to optimize strength, corrosion resistance, high temperature performance, and biocompatibility according to your needs.

- Medical-grade WE43 pipes are ISO 13485 certified, food-grade pipes meet FDA requirements, and aerospace-grade pipes comply with AMS material specifications.

Seamless Magnesium Pipe Production Process

- High-Purity Raw Material Melting : 99.95%+ high-purity magnesium ingots and certified alloying elements are melted under argon protection, with online degassing and slag removal technology to eliminate inclusions and gas, and grain refinement treatment to avoid component segregation.

- Homogenization Heat Treatment : Long-time high-temperature homogenization treatment of cast ingots to eliminate internal stress and component segregation, ensuring uniform microstructure of the ingot.

- Hot Extrusion Molding : Large-scale precision extrusion machine, with strict control of extrusion temperature and speed, to form the seamless pipe blank, ensuring uniform wall thickness and no surface defects.

- Cold Drawing & Sizing : Multi-pass cold drawing process to achieve precise outer diameter, wall thickness, and surface finish, with intermediate annealing to eliminate processing hardening and ensure excellent formability.

- Precision Heat Treatment : Customized annealing, solution, and aging treatment processes to adjust the mechanical properties of the pipe, and final stress relief annealing to eliminate internal stress.

- Surface Treatment & Finishing : Pickling, polishing, passivation, anodizing, and other surface treatments, with pipe end chamfering and plastic cap protection.

- Full Inspection & Certification : 100% non-destructive testing, dimensional inspection, mechanical property testing, and chemical composition analysis, with complete test reports provided.

- Precision Magnesium Strip Preparation : High-precision rolled magnesium strip with uniform thickness and surface quality, slit to the required width according to the pipe diameter.

- Roll Forming : Continuous roll forming machine to bend the magnesium strip into a round tube shape, with strict control of the forming gap and roundness.

- High-Purity TIG Welding : Non-melting electrode inert gas shielded welding, with high-purity argon protection on both inside and outside of the weld, to avoid oxidation and ensure dense weld seams.

- Sizing & Shaping : Precision sizing die to correct the outer diameter and roundness of the welded pipe, ensuring dimensional accuracy.

- Heat Treatment : Stress relief annealing to eliminate welding stress, improve the toughness of the weld, and ensure uniform mechanical properties of the whole pipe.

- Surface Finishing & Inspection : Weld seam polishing, surface treatment, 100% eddy current testing, and hydrostatic pressure testing to ensure zero weld defects.

Every batch of magnesium pipes undergoes full-process quality control, with the following testing items :

- Chemical composition analysis (direct reading spectrometer, per heat)

- Mechanical property testing (tensile strength, yield strength, elongation, hardness, per batch)

- 100% non-destructive testing (UT for seamless pipes, ECT for welded pipes)

- Hydrostatic pressure test (1.5 times the working pressure, no leakage)

- Dimensional and geometric tolerance inspection (outer diameter, wall thickness, straightness, roundness)

- Metallographic structure inspection (grain size, uniformity, no overburning)

- Corrosion resistance testing (neutral salt spray test for surface-treated products)

- Flaring and bending test for formability verification

We provide complete Material Test Reports (MTR), non-destructive testing reports, and third-party SGS/TUV certification for every order, with full batch traceability.

- Aerospace & Aviation : 

- Aircraft and UAV hydraulic piping systems, fuel delivery pipes, lubricating oil pipes, and pneumatic system pipelines, meeting AMS aerospace material standards, reducing aircraft weight and improving fuel efficiency.

- Satellite and spacecraft lightweight structural pipes, thermal control system pipelines, and load-bearing frame pipes, with excellent vibration damping performance to protect precision instruments.

- Military equipment piping systems, with high strength and low weight to improve equipment mobility and payload capacity.

- New Energy & Automotive Industry : 

- New energy vehicle (NEV) battery pack cooling circulation pipes, motor cooling system pipelines, and thermal management system pipes, with superior thermal conductivity (23% higher than aluminum) to improve heat dissipation efficiency.

- Automotive body lightweight structural pipes, seat frame pipes, door anti-collision beam pipes, and interior trim support pipes, reducing vehicle weight by 30-50% and extending EV range by 8-15%.

- Rail transit high-speed rail/metro interior structural pipes, equipment cooling pipes, and lightweight frame pipes, reducing train load and improving energy efficiency.

- Medical & Healthcare : 

- Biodegradable medical magnesium alloy capillary pipes and stent tubes (WE43 medical grade, ISO 13485 certified), which degrade naturally in the human body, eliminating the need for secondary surgery to remove implants.

- Surgical instrument structural pipes, medical rehabilitation equipment frames, wheelchair lightweight pipes, and medical device housing support pipes, with non-toxic and biocompatible properties.

- Medical imaging equipment and precision medical instrument heat dissipation pipes, with excellent electromagnetic shielding performance to avoid interference with precision instruments.

- Chemical & Marine Anti-Corrosion : 

- High-purity magnesium sacrificial anode pipes for cathodic protection of oil and gas pipelines, ship hulls, port facilities, and buried metal pipelines, effectively preventing electrochemical corrosion of steel structures.

- Chemical industry low-corrosive medium transmission pipes, reaction equipment pipelines, and environmental protection equipment pipes, with excellent corrosion resistance to specific media after professional surface treatment.

- Marine equipment lightweight structural pipes, ship interior piping systems, and offshore wind power equipment parts, with MAO anti-corrosion treatment to adapt to harsh marine environments.

- 3C Electronics & Precision Instruments : 

- Laptop, tablet, and smartphone heat dissipation pipes, 5G communication equipment thermal management pipelines, with ultra-thin wall design and superior thermal conductivity to improve heat dissipation efficiency.

- Precision optical instrument structural pipes, camera and projector lens support pipes, semiconductor equipment vibration damping platforms, using the excellent vibration damping performance of magnesium to improve equipment accuracy.

- Audio equipment speaker pipes, high-fidelity audio vibration parts, with 25x better vibration absorption performance than aluminum to improve sound quality.

- Other Industrial Applications : 

- Textile machinery, printing machinery lightweight structural pipes, reducing equipment inertia and improving operating speed and precision.

- Sports equipment: bicycle frame pipes, golf club shafts, ski poles, and hiking poles, with ultra-lightweight and high strength to improve sports performance.

- Mold cooling water pipes, with superior thermal conductivity to shorten mold heating and cooling cycles and improve production efficiency.

Q: What is the difference between seamless magnesium pipe and welded magnesium pipe? How should I choose?

A: The core differences and selection guidelines are as follows:

- Seamless Magnesium Pipe : Produced by one-time hot extrusion, with no weld seams, uniform structure, excellent pressure resistance, and higher reliability. It is suitable for high-pressure fluid transmission, high-load structural parts, aerospace, and other high-reliability requirements scenarios. The maximum wall thickness can reach 30mm, and the pressure resistance is stronger.

- Welded Magnesium Pipe : Produced by welding magnesium strips, with lower cost, higher dimensional accuracy, and better surface finish. It is suitable for medium-low pressure fluid transmission, structural support, and scenarios with large diameter and thin wall requirements. The production cycle is shorter, and it is more cost-effective for mass production.Our technical team will recommend the most suitable product type according to your working pressure, application scenario, and budget.

Q: What international standards do your magnesium pipes comply with? Can they be exported to Europe and the United States?

A: Our magnesium pipes are produced in strict accordance with international mainstream standards, including ASTM B107, ASTM B210 (American Standard for Magnesium Alloy Pipe), ISO 15522 (International Standard), AMS 4382 (Aerospace Material Specification), and EN 1753 (European Standard). The products fully comply with EU REACH, RoHS environmental protection standards, US FDA food contact standards, and ISO 13485 medical device standards. We have self-operated import and export rights, and have been exported to more than 50 countries and regions including the United States, Germany, the United Kingdom, France, Canada, and Australia for a long time. We are familiar with the customs clearance requirements of various countries and can provide a full set of customs clearance documents.

Q: What is your minimum order quantity (MOQ) for magnesium pipes? Can you provide free samples?

A: We have a very flexible MOQ to meet your different needs:

- For standard in-stock specifications (AZ31B conventional size): 1 piece minimum order, supporting sample orders and small batch trial production.

- For custom sizes, custom grades, and special surface treatment products: the MOQ is 50kg, which can be negotiated and reduced for special cases.

- Free samples: We can provide small sample pipes ≤200mm in length for free for you to test material properties, welding performance, and processing performance, you only need to bear the international shipping cost; large-size samples can be provided at cost price.

Q: What is the corrosion resistance of magnesium pipes? Can they be used in outdoor or marine environments?

A: We solve the corrosion problem of magnesium pipes through professional alloy selection and surface treatment technology:

- Alloy Selection : For outdoor and marine environments, we recommend WE43 rare earth magnesium alloy, which has far better natural corrosion resistance than ordinary AZ31B magnesium alloy.

- Surface Treatment Solutions :

 - Basic passivation treatment for indoor dry environments.

 - Micro-arc oxidation (MAO) treatment, which forms a dense ceramic layer on the surface, passing more than 500 hours of neutral salt spray test, suitable for ordinary outdoor environments.

 - MAO + sealing + fluorocarbon spraying composite treatment, passing more than 1000 hours of neutral salt spray test, fully meeting the use requirements of marine and harsh industrial corrosion environments.Our technical team will customize the optimal anti-corrosion solution according to your specific use environment.

Q: Can magnesium pipes be bent, flared, and welded? Do you provide process guidance?

A: Yes, our magnesium pipes have excellent secondary processing performance:

- Bending & Forming : Annealed (O-temper) pipes have the best formability, supporting cold bending, flaring, necking, and spinning, with a minimum bending radius of 1.5x the outer diameter of the pipe, no cracking or wrinkling. We recommend using a mandrel during bending to avoid ovality.

- Welding : The recommended welding processes are AC TIG tungsten inert gas welding (most commonly used) and MIG welding, using high-purity argon (≥99.99%) for double-sided protection of the weld, and matching the same grade of magnesium welding wire to avoid oxidation and porosity.We provide detailed processing parameter guidelines, welding operation manuals, and one-on-one technical support with each order. We can also provide pre-bending, pre-flaring, and welding processing services according to your drawings.

Q: What non-destructive testing do you perform on magnesium pipes? Can you provide testing reports?

A: We perform 100% non-destructive testing on all magnesium pipes to ensure zero defects:

- Seamless Magnesium Pipe : Full-coverage ultrasonic flaw detection (UT) in strict accordance with ASTM E114 standards, to detect internal defects such as porosity, cracks, inclusions, and delamination. The default delivery is Grade A qualified, and Grade B qualified products can be provided for aerospace applications.

- Welded Magnesium Pipe : 100% online eddy current testing (ECT) for weld seam defect detection, and hydrostatic pressure test (1.5 times the working pressure) to ensure no leakage.

- For special requirements, we can provide X-ray testing, penetrant testing, and other non-destructive testing services.Each order will be provided with a complete non-destructive testing report and Material Test Report (MTR), and third-party SGS/TUV testing certification can also be provided.

Q: What is the delivery time of your magnesium pipes? Can you provide expedited production?

A: The delivery time is distinguished according to the order type:

- Standard in-stock specifications (conventional size of AZ31B): delivery within 3-7 days after payment confirmation.

- Custom size, non-stock products of conventional grades: delivery within 10-15 days.

- Custom alloy grades, special heat treatment, and large batch orders (≥10 tons): delivery within 15-25 days.

- Urgent orders: We have a dedicated expedited production line, which can shorten the delivery time to 2-5 days for small batch urgent orders, to meet your project progress needs.

Q: What are the advantages of magnesium pipes compared to aluminum pipes and steel pipes?

A: Magnesium pipes have irreplaceable core advantages over traditional aluminum and steel pipes:

- Ultra-Lightweight : The density is only 1.74g/cm³, 34% lighter than aluminum (2.7g/cm³) and 77% lighter than steel (7.85g/cm³). For the same size and pressure resistance, the weight of magnesium pipes is only 2/3 of aluminum pipes and 1/4 of steel pipes, which is the core advantage for weight-sensitive applications.

- Superior Thermal Conductivity : The thermal conductivity of magnesium is 156W/(m·K), 23% higher than 6061 aluminum alloy, and 2 times higher than steel. It has a better heat dissipation effect when used in cooling system pipelines, which can improve the efficiency of thermal management systems.

- Excellent Vibration Damping Performance : The vibration damping capacity of magnesium is 25 times that of aluminum, which can effectively absorb vibration and noise when used in equipment structural pipes, improving the accuracy and service life of precision instruments.

- Better Machinability : The machining efficiency of magnesium is 30-50% higher than that of aluminum, with low tool wear, which can reduce your subsequent processing costs and shorten the production cycle.

- Fully Recyclable & Eco-Friendly : Magnesium is 100% recyclable, with a lower carbon footprint in production and recycling than aluminum and steel, fully meeting the global carbon neutrality requirements.

Q: What are the storage and handling precautions for magnesium pipes?

A: To ensure the performance and service life of magnesium pipes, please follow the following storage and handling guidelines:

- Storage Environment : Store in a dry, well-ventilated warehouse with a relative humidity of <40% and a temperature of 10-25℃. Keep away from moisture, rain, direct sunlight, heat sources, and corrosive chemicals. Do not store together with oxidants and acidic substances.

- Handling : Handle with care during loading and unloading to avoid collision, scratching, and bending of the pipes. Do not drag the pipes on the ground to avoid surface damage. Wear clean gloves when handling to avoid sweat and oil contamination on the pipe surface.

- Packaging Protection : Keep the pipes in the original sealed packaging before use to avoid oxidation. If the packaging is damaged, please re-seal it in time.

- Shelf Life : Properly stored magnesium pipes have a shelf life of 12 months; surface-treated products have a shelf life of 24 months.

Q: Can you customize special specifications, alloy grades, and surface treatments for magnesium pipes?

A: Yes, we provide full-process customized services to meet your personalized needs:

- Size Customization : Outer diameter from 1mm to 300mm, wall thickness from 0.3mm to 30mm, length custom cut according to your drawings, with special-shaped pipe processing services.

- Alloy Customization : Custom special alloy formulations according to your requirements, adjust the content of Al, Zn, Zr, rare earth elements, optimize the strength, corrosion resistance, high temperature performance, and biocompatibility.

- Heat Treatment Customization : Custom O, H112, T4, T5, T6 and other different heat treatment states, adjust the mechanical properties to meet your processing and use needs.

- Surface Treatment Customization : Passivation, anodizing, micro-arc oxidation, spraying, electrophoresis, polishing, brushing and other surface treatments, with custom colors available.

- Deep Processing Customization : CNC bending, flaring, necking, welding, milling, drilling and other deep processing according to your drawings, providing finished and semi-finished parts.

Q: What payment terms do you accept for international orders?

A: We accept standard international trade payment terms:

- T/T (Telegraphic Transfer) : 30% deposit in advance, 70% balance before shipment.

- Irrevocable L/C at sight for bulk orders over 50,000 USD.

- Alibaba Trade Assurance (100% payment protection for buyers).

- For long-term cooperative partners with good credit, we can offer more flexible payment terms.

Q: Do you have medical-grade magnesium pipes? What certifications do you have?

A: Yes, we have professional medical-grade magnesium pipes, mainly WE43 and AZ31B medical grade alloys. Our medical-grade magnesium pipes are produced in a 100,000-level clean workshop, in strict accordance with ISO 13485 medical device quality management system standards, with ultra-low impurity content, uniform microstructure, and excellent biocompatibility. We can provide ISO 13485 certification, biocompatibility test reports, and third-party sterilization services, which are widely used in biodegradable medical stents, bone fixation implants, and surgical instruments.

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