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Sacrificial Magnesium anodes
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Sacrificial Magnesium anodes

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Sacrificial Magnesium anodes are widely used for cathodic protection in underground steel pipelines, tanks, boilers, condensers, water, heatexchangers, ship hulls and marine structures applications, because it has the greatest driving potential of any other metals.

HONGTAI provides a complete serial of both high potential(HP) and normal potential (H1) magnesium anode types and styles for your applicants of CP system. We can also take the specifications as per customers’ requirements.

Sacrificial Mg anode Sacrificial Zn anode Sacrificial Zn anode

High Potential Cast Magnesium Anode

High Potential (HP) Cast Magnesium anode is the best choice for CP systems in high resistivity soil since it is made from the high purity magnesium which provides higher electrochemical and efficiency.

Chemical composition of HP Mg anode, %

   Alloy

Al
(max)

Mn

Si
(max)

Cu
(max)

Ni
(max)

Fe
(max)

Other impurity(each) (max)

Total Impurities (max)

Mg-Mn

0.01

0.50-1.30

0.05

0.005

0.001

0.01

0.05

0.30

Electrochemical properties of HP Mg anode

Open voltage(-V)

Closed voltage(-V)

Actual capacity(A.h/kg)

Efficiency (%)

1.70-1.75

1.58-1.62

1,150

50 min

Normal Potential (H1) Cast Magnesium Anode

Normal Potential (H1) Magnesium anode is used in low resistivity soil.

Chemical composition of H1 Mg anode, %

Alloy

Al

Zn

Mn

Si
(max)

Cu
(max)

Ni
(max)

Fe
(max)

Total of Impurities (max)

AZ63B

5.30-6.70

2.50-3.50

0.15-0.70

0.10

0.02

0.002

0.003

0.30

Electrochemical properties of H1 Mg anode

Open voltage(-V)

Closed voltage(-V)

Actual capacity(A.h/kg)

Efficiency(%)

1.50-1.55

1.45-1.50

1,230 min

55 min

Specifications and drawings of HP & H1 Magnesium Anodes

“D” Type Cast Magnesium Anode

Type

Weight
(kg)

A
(mm)

B
(mm)

C
(mm)

Insert
(mm)

3D2

3lbs

69.9

76.2

182

Strip

5D2

5lbs

69.9

76.2

303

Strip

9D2

 9lbs

69.9

76.2

547

Strip

14D2

14lbs

69.9

76.2

850

Strip

20D2

20lbs

69.9

76.2

1260

Strip

9D3

9lbs

88.9

95.25

259

Strip

17D3

17lbs

88.9

95.25

657.2

Strip

32D5

32lbs

139.7

146.05

523.9

Strip

48D5

48lbs

139.7

146.05

765.2

Strip

60D4

60lbs

114

114

1520

Strip

* We also take customers’ requirements order.

“R”Type Cast Magnesium Anode

Type

N.W.
(kg)

G.W.
(kg)

DIA
(mm)

Length
HP(mm)

Length
H1(mm)

Insert
Dimension

R36

3.6kg

3.7kg

114

202

193

25x2x190

R41

4.1kg

4.2kg

114

230

220

25x2x190

R50

5.0kg

5.1kg

114

280

268

25x2x195

R77

7.7kg

7.8kg

114

431

412

25x2x332

R100

10kg

10.2kg

114

560

536

25x2x428

R145

14.5kg

14.7kg

146

494

472

25x2x428

R227

22.7kg

22.9kg

178

520

497

25x2x428

R274(I)

27.3kg

27.6kg

178

630

618

25x3x550

R274(II)

27.3kg

27.6kg

114

1528

1462

25x3x1300

*We also take customers’ requirements order.

R Type Mg anode S Type Mg anode S Type Mg anode

"S" Type Cast Magnesium Anode

Type

N.W.
(kg)

A
(mm)

B
(mm)

C
(mm)

Insert
(mm)

3S3

3lbs

76

76

114

Strip

5S3

5lbs

76

76

191

Strip

9S2

9lbs

71.1

50.8

711

strip

9S3

9lbs

76

76

343

Strip

17S3

17lbs

96.5

76.2

650

Strip

17S4

17lbs

102

102

432

Strip

32S5

32lbs

127

127

533

Strip

48S5

48lbs

127

127

800

Strip

* We also take customers’ requirements order.

Specifications and drawings of HP & H1 Packaged Magnesium Anodes

Above bare Mg anodes could be packed in either carton or plastic bags with backfills consisting of 75% Gypsum, 20% Bentonite and 5% Anhydrous Sodium Sulphate, and connected with PVC/PVC, XLPE/PVC, HMWPE, TW cable and sealed with epoxy resin.

Prepackaged Mg Anode Mg Anode with Cable Prepackaged Mg Anode

Hongtai Packaged Mg anodes are free from environmental pollution for that the harmful elements in the backfill is lower the safety standard. The packaged anodes are ready to be installed which could save the cost and job for users.

Magnesium Ribbon Anode

Magnesium Ribbon Anode has a high current to weight ratio, which mainly used for oil tank, pipelines, and other steel made structures in high resistivity soil.

Chemical composition of magnesium ribbon anode, %

Mn

Zn

Al
(max)

Cu
(max)

Ni
(max)

Fe
(max)

Si
(max)

Impurities

Mg

Each

Total

 

0.50-1.3

----

0.01

0.02

0.001

0.03

---

0.05

0.30

Bal.

0.20 min

0.7-1.3

2.5-3.5

0.01

0.001

0.002

0.05

0.05

0.30

Bal.

Specification of magnesium ribbon anode

Section (inch)

3/8X3/4± 0.015 (1/8" corner)

Diameter of core (inch)

0.135

Core eccentric (inch)

<1/16

Weight (lbs/feet)

0.243

Standard coil length (feet)

1000

Coil weight (lbs)

243 (110kg)

 

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Shandong Hongtai Science and Technology Co., Ltd. 

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