Galvotec Alloys, Inc. — McAllen, Texas — (956) 630-3500 Same-Day Shipping on Orders by 4 PM CT

America's Premier Source for
Sacrificial Anodes

Zinc, Aluminum & Magnesium anodes for marine, pipeline, and industrial cathodic protection. MIL-SPEC certified. Manufactured and shipped from McAllen, Texas since 1984.

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GA-MG-10-LAUNCH
Magnesium Anodes

Marine Hull Mg Anode — GA-MG-10-Launch

Marine hull magnesium anode for ships, barges, and tugs in brackish or fresh water. Available with or without Plastisol coating.

Weight 10.0 lbs (4.5 kg)
Dimensions 12" × 6" × 3" (305mm × 152mm × 76mm)
Specification ASTM AZ-63 (H-1) / MIL-A-21412A
$69.95 1-4 $59.95 5-19 $49.95 20+
Marine Hull Mg Anode — GA-MG-5-Launch
Magnesium Anodes

Marine Hull Mg Anode — GA-MG-5-Launch

Compact marine hull magnesium anode for smaller vessels and boats.

Weight 5.0 lbs (2.3 kg)
Dimensions 10" × 5" × 2½" (254mm × 127mm × 64mm)
Specification ASTM AZ-63 (H-1) / MIL-A-21412A
GA-MG-H-22
Magnesium Anodes

Marine Hull Mg Anode — GA-MG-H-22

Heavy marine hull magnesium anode with dual-core configuration for large vessels.

Weight 22.0 lbs (10.0 kg)
Dimensions 10" × 20" × 2" (254mm × 508mm × 51mm)
Specification ASTM AZ-63 (H-1) / MIL-A-21412A
GA-MG-P-50C
Magnesium Anodes

Pier Mg Anode — GA-MG-P-50C (Cylinder)

Cylindrical magnesium pier anode with eyebolt core. For docks, pilings, and marine structures in fresh/brackish water.

Weight 50.0 lbs (22.7 kg)
Dimensions 8" dia × 16" (203mm × 406mm)
Specification ASTM AZ-63 (H-1)
GA-MG-P-100C
Magnesium Anodes

Pier Mg Anode — GA-MG-P-100C (Cylinder)

Large cylindrical magnesium pier anode. 100 lbs for heavy-duty marine structures.

Weight 100.0 lbs (45.4 kg)
Dimensions 8" dia × 32" (203mm × 813mm)
Specification ASTM AZ-63 (H-1)
GA-MG-17HP
Magnesium Anodes

Hi-Potential Soil Anode — GA-MG-17 HP (SuperMAG™)

High-potential magnesium soil anode for buried pipeline and underground tank cathodic protection. ASTM-B843 M1C.

Weight 17.0 lbs (7.7 kg)
Dimensions 3.5" × 3.75" × 25.75" (89mm × 95mm × 654mm)
Specification ASTM-B843 M1C (Hi-Potential)
$89.95 1-9 $79.95 10-24 $69.95 25+
GA-MG-32HP
Magnesium Anodes

Hi-Potential Soil Anode — GA-MG-32 HP (SuperMAG™)

Heavy high-potential magnesium soil anode for pipeline and tank protection in high-resistivity soil.

Weight 32.0 lbs (14.5 kg)
Dimensions 5.5" × 5" × 20.5" (140mm × 127mm × 521mm)
Specification ASTM-B843 M1C (Hi-Potential)
GA-MG-48HP
Magnesium Anodes

Hi-Potential Soil Anode — GA-MG-48 HP (SuperMAG™)

Large high-potential magnesium soil anode for maximum current output in buried applications.

Weight 48.0 lbs (21.8 kg)
Dimensions 5.5" × 5.75" × 31" (140mm × 146mm × 787mm)
Specification ASTM-B843 M1C (Hi-Potential)
GA-MG-T-52A
Magnesium Anodes

Tank Mg Anode — GA-MG-T-52A

Magnesium tank anode for internal cathodic protection of water storage tanks and vessels.

Weight 52.0 lbs (23.6 kg)
Dimensions 5" × 5.25" × 29" (127mm × 133mm × 737mm)
Specification ASTM AZ-63 (H-1)