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21mm Magnesium Anode Rod 3-Segment Design 900mm Length Bolt-Together for Low-Ceiling Water Heater
Product Details:
| Place of Origin: | Hunan, China |
| Brand Name: | OEM |
| Certification: | ISO 9001:2015, ASTM B843 |
| Model Number: | HB-MGS21-900 |
Payment & Shipping Terms:
| Minimum Order Quantity: | 10 Pieces |
|---|---|
| Price: | USD 10.00-19.00 / Piece |
| Packaging Details: | OEM branded color box with VCI moisture-resistant poly-bag, export-grade corrugated master carton |
| Delivery Time: | 5 working days for stock, 15-25 days for production |
| Payment Terms: | T/T,L/C,PayPal,Western Union |
| Supply Ability: | 50000 Pieces per Month |
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Detail Information |
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| Material: | Magnesium Alloy AZ63 | Thread Specification: | 3/4" NPT |
|---|---|---|---|
| Rod Diameter: | Φ21mm | Rod Length: | 900mm |
| Core Wire Material: | Galvanized Steel | Open Circuit Potential: | -1.50 To -1.55V (vs. Cu/CuSO4) |
| Highlight: | Magnesium Anode Rod Replacement,21mm Magnesium Sacrificial Anode,Segmented Magnesium Anode Rod |
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Product Description
The HB-MGS21-900 Magnesium Alloy AZ63 segmented anode rod is engineered for superior cathodic protection in low-ceiling water heater applications. This anode rod provides long-lasting corrosion prevention by sacrificially protecting the tank interior, heating elements, and internal components from galvanic corrosion, extending equipment service life significantly.
- High-purity magnesium alloy AZ63 for standard water heating applications
- Continuous cast steel core for uniform current distribution
- Low electrical resistivity below 0.3Ω·m for efficient protection
- Corrosion rate controlled below 0.5mm/year in typical water conditions
- Open circuit potential -1.55V provides robust driving voltage
| Parameter | Specification |
|---|---|
| Model Number | HB-MGS21-900 |
| Material | Magnesium Alloy AZ63 |
| Chemical Composition | Mg ≥ 93%, Al 5.5-7.0%, Zn 2.5-3.5%, Mn ≥ 0.2%, Fe ≤ 0.003% |
| Rod Diameter | Φ21mm |
| Rod Length | 900mm |
| Thread Size | 3/4" NPT |
| Core Material | Galvanized Steel Wire |
| Open Circuit Potential | -1.50 to -1.55V (vs. Cu/CuSO4) |
| Current Efficiency | ≥ 60% |
| Current Capacity | ≥ 1200 Ah/kg |
| Rod Type | Segmented |
| Application | Low-Ceiling Water Heater |
- Residential electric and gas water heaters
- Commercial and industrial hot water storage tanks
- Boiler feed water tanks and condensate return systems
- Heat exchanger and condenser water circuits
- Solar thermal water heating systems
Available under HB Brand in custom color-box packaging or OEM neutral packaging with your logo and specifications. Each rod is individually sealed in moisture-resistant VCI poly-bag to prevent oxidation during storage and transit.
Every HB-MGS21-900 anode rod undergoes spectrographic alloy composition analysis, electrochemical performance testing (ASTM G97), dimensional inspection, thread gauge verification per ANSI/ASME B1.20.1, and visual inspection for surface defects and casting integrity.
HB is a trusted manufacturer based in Hunan, China, specializing in sacrificial anode production for over 15 years. Our vertically integrated facility ensures complete quality control from raw material smelting to finished product packaging. ISO 9001:2015 certified processes and rigorous batch testing guarantee consistent, reliable performance in every anode rod we ship.
