Controlled-Dissolution Magnesium Alloy Hollow Tube
It can fully degrade in specific downhole fluids without milling,efficient and eco-friendly, widely used for dissolvable frac plugs, dissolvable balls and other components.
- Product Description
Controlled-Dissolution Magnesium Alloy Hollow Tube

Your Engineered Solution for Autonomous Downhole Tool Removal
When you're designing dissolvable bridge plugs or frac isolation systems, you need materials that perform under pressure and disappear on demand. Our Controlled-Dissolution Magnesium Alloy Hollow Tube delivers exactly that. Manufactured by Shaanxi Hagrien Energy Technology, these tubes achieve tensile strength from 300 MPa to 480 MPa—comparable to low-carbon steel—while maintaining a lightweight density of just 1.74–1.85 g/cm³. With tunable dissolution rates ranging from 0.5 mg/cm²/h to 100 mg/cm²/h, you get predictable degradation tailored to your well's temperature and salinity. Our closed-loop manufacturing system ensures uniform microstructure across diameters up to Ø300 mm, backed by CNAS-accredited testing and full batch traceability.
What Makes This Product Different?
Real-World Performance You Can Count On
You don't have time for premature failures or unpredictable behavior downhole. That's why our tubes are engineered from the ground up.
Each tube starts with precision alloy formulation. We control the melting, extrusion, and machining in-house. This means you get consistent mechanical properties across every batch.
Temperature swings? High salinity? No problem. We've calibrated the dissolution behavior for environments ranging from 25°C to 150°C. Your completion timeline stays on track.
Strength Without the Weight
Traditional steel components add unnecessary load. Our magnesium alloy offers high specific strength while cutting weight dramatically.
This translates to easier handling during installation. Lower transport costs. Reduced stress on setting tools.
You also gain superior shock absorption during high-pressure operations. The material withstands impact without fracturing.
Predictable Dissolution—When You Want It
Here's where the engineering really shines. The tube maintains full structural integrity during your frac job. Then, once exposed to your target fluid chemistry, it starts to dissolve at a rate you've pre-selected.
No milling. No fishing. No coiled tubing runs to retrieve stuck components.
The Controlled-Dissolution Magnesium Alloy Hollow Tube breaks down into magnesium hydroxide and hydrogen gas—both environmentally benign. The residue is a fine powder that flows back with produced fluids.
Exhibition

Technical Specifications
Item | Unit | AZ31B | AZ61A | AZ91D |
Density | g/cm³ | 1.77 | 1.80 | 1.81 |
Melting Point | ℃ | 566- 632 | 620- 630 | 470- 595 |
Tensile Strength | MPa | 255- 290 | 290- 315 | 230- 250 |
Yield Strength | MPa | 150- 200 | 170- 220 | 150- 170 |
Elongation | % | 12-21 | 10-16 | 3-5 |
Elastic Modulus | GPa | 45 | 45 | 45 |
Poisson’s Ratio | — | 0.32 | 0.31 | 0.32 |
Thermal Expansion Coefficient | 10⁻⁶ /℃ | 26 | 26 | 26 |
Thermal Conductivity | W/(m·K) | 70 | 65 | 50 |
Specific Heat Capacity | J/(kg·K) | 1000-1050 | 1050 | 1050 |
Electrical Resistivity | μΩ·cm | 92- 125 | 125 | 170 |
Brinell Hardness | HB | 56-73 | 60-70 | 63-90 |
Shear Modulus | GPa | 17 | 17 | 17 |
Fatigue Strength | MPa | 80- 110 | 90- 120 | 70- 100 |
Where You'll Use These Tubes
Multi-Stage Pressure driven Fracturing
Your frac plugs require to hold weight amid incitement, at that point disappear without mediation. Our empty tubes shape the auxiliary spine of dissolvable bridge plugs and frac balls.
They separate zones beneath extraordinary differential weight. Once you've completed the arrange, the components break up independently. Your wellbore remains clear for production.
Deep-Water Completion Tools
When you're working subsea, mechanical mediation isn't fair expensive—it's frequently outlandish. Our tubes serve as brief liners, valve actuators, and bolster structures in high-salinity environments.
The controlled disintegration guarantees the component performs its work, at that point vanishes on plan. You maintain a strategic distance from the calculated bad dream of recovery operations miles underneath the surface.
Customized Downhole Components
Need a particular profile for your restrictive device plan? We fabricate drawing-based components with tight dimensional control.
Our building group works with you to coordinate the disintegration rate to your well conditions. We approve the plan through model testing some time recently scaling to generation volumes.
How We Ensure Quality?
Closed-Loop Manufacturing Control
Every tube starts with alloy formulation optimized for your application. We melt, extrude, and machine in-house. This eliminates handoff risk and ensures metallurgical consistency.
Our process discipline delivers uniform grain structure. No weak spots. No unpredictable dissolution behavior.
CNAS-Accredited Testing
Before any product ships, it passes through rigorous verification. Our HTHP laboratory simulates your downhole conditions. We measure mechanical properties, dissolution rates, and pressure ratings.
You receive complete documentation: Certificate of Analysis, Certificate of Conformance, and Safety Data Sheets. Every batch is traceable.

ISO-Certified Systems
We operate under ISO 9001, ISO 14001, and ISO 45001. Our quality management system ensures repeatable results across production runs.
API recognition and HSE compliance give you confidence during supplier qualification audits.

Frequently Asked Questions
Q: How do you anticipate untimely disintegration amid shipping and installation?
We apply specialized surface passivation or dissolvable polymer coatings. These make a defensive boundary that remains intaglio until activated by your target liquid chemistry or temperature edge. Capacity in climate-controlled, low-humidity environments—often vacuum-sealed with desiccant—maintains this protection.
Q: Can you alter the disintegration rate for low-temperature wells?
Absolutely. By expanding the division of respectable metal cathode particles in the amalgam framework, we quicken the micro-galvanic impact. This permits unsurprising disintegration indeed in cooler situations underneath 40°C.
Q: What happens to the fabric after it dissolves?
The tube breaks down into magnesium hydroxide [Mg(OH)₂] and hydrogen gas. The strong buildup is a fine, non-toxic powder effortlessly carried absent amid flowback. There's no natural danger or wellbore obstruction.
Q: How is the weight rating decided for the empty structure?
We calculate it based on the divider thickness-to-diameter proportion and confirm through testing adjusted with ISO 14310 and API 11D1 approval grades. This guarantees your components meet the mechanical requests of your particular completion design.
Q: What if I require a custom measure or disintegration profile?
That's our strength. Share your drawings and working parameters. Our designing group will create a model, approve execution, at that point scale to your required volumes. Custom ventures ordinarily transport inside 4–8 weeks.
Q: Do you give specialized back amid apparatus design?
Yes. We offer fabric + auxiliary co-design help. Our engineers offer assistance you optimize divider thickness, breadth, and amalgam composition to coordinate your application. We can moreover back Manufacturing plant Acknowledgment Testing (FAT) and confirmation arranging.
Why Choose Hagrien?
You're not just buying a tube. You're partnering with a manufacturer that understands the stakes.
We've been producing dissolvable magnesium components since 2019. Over seven years, we've refined our alloy systems and process controls to deliver consistent results.
Our U.S. presence ensures responsive communication aligned with your business hours. You get RFQ responses within 24 hours and quotations within 1–3 business days.
We maintain safety stock of standard sizes. Lead times are predictable. When you need expedited delivery, we make it happen.
Most importantly, we stand behind our products with full traceability and engineering support. Your program success is our success.

Contact Us
Ready to solve your dissolvable tool challenges with Controlled-Dissolution Magnesium Alloy Hollow Tube? Email us at cyrus@us-hagrien.com for technical specifications, custom quotes, or engineering consultation.
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