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borna godaz

manufacturer of cathodic protection anodes

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Aluminum Anode for Hull

Aluminum Anode

BORNA Godaz aluminum anodes are specially formulated for cathodic protection system application in sea water, seabed mud and higher resistivity waters . Aluminum anodes are sacrificial type anodes  having an electro-chemical property that makes them suitable for cathodic protection systems with driving voltage of 300 mv against protected steal and rather three times the capacity of zinc anodes. this anodes are capable of achieving high output capacity in mud and brackish water of resistivity up to 150 Ohm cm.

Drawback of pure aluminum is passivating, an oxide film can develop on the surface of the aluminum ingot that makes the material passive. Aluminum alloy sacrificial anodes have been developed so that one or more of the alloys disrupts the protective oxide layer and makes the alloy anodic to promote even corrosion when the anode is placed in the electrolyte.

Typical Applications

  • Offshore Structures 
  • Marine Structures
  • Sheet Pile Walls
  • Submarine Pipelines
  • Tank Internals
  • Shipping

TheBORNA GodazAluminum Alloy Anodes are made from the highest purity aluminum ingot to conform to the following material composition:

       
Aluminum chemical composition    
Element Alloy Type 1 Alloy Type 2 Alloy Type 3
Zinc (%) 0.30 - 0.05 0.30 - 6.0 2.5 - 5.75
Indium (%) ---- ---- 0.015 - 0.040
Hg(%) 0.30 - 0.05 0.35 - 0.5
Cadmium (%) ---- ---- 0.002 max
Silicon (%) 0.11 - 0.21 0.11 - 0.21 0.12 max
Iron (%) 0.13 max 0.13 max 0.09 max
Copper (%) 0.006 max 0.006 max 0.003 max
All others (%) 0.02 max 0.02 max 0.02 max
Aluminum (%) Remainder Remainder Remainder

  Standards:

  NACE - DNV

  U.S.Military

  ASTM - IPS

Eletrical Properties Environment
Sea water Sediments
Electrochemical capacity (Ah/Kg) 2000 1500
Closed circuit potential (V) -1.05 -0.95
(Respect to Ag/Agcl reference electrode)
Efficiency (%) 90 90

BORNA Godazaluminum anodes can be made in various shapes &size to suit individual applications. They normally have steel-bar or rod cores for attachment to the structure by welding, or either bolts & clamps.

The following drawings show typical zinc anodes from BORNA Godaz . However we can supply other shapes and size to customer's own requirement.

Magnesium Anode

Magnesium Anode

BORNA Godaz magnesium anodes have been specifically developed for cathodic protection of steel structures under fresh, brackish and sea water. They  are manufactured in a comprehensive range of alloys, shapes and size to provide a wide selection for cathodic protection of buried under ground structures and pipelines, submerged and marine structures, vessels, storage tanks, internal protection of water tanks, etc.

Anodes for buried pipelines, tanks and similar structures are normally supplied packaged in a cotton bag containing a rapid wetting, moisture retaining backfill which reduces the electrolyte resistivity adjacent to the anode and improves performance.

Our magnesium anodes are available in two different magnesium alloy chemical compositions:

• Standard Potential -SP

• High Potential .HP


Typical Applications

Temporary

 • Temporary protection of pipelines

 • Temporary protection of tank

 •Bottoms

• Anodes are installed during the

• Construction period and prioi to

• Energizing the permanent impressed

• current system

Permanent

 • permanent protection of well

• coated pipelines in low resistivity soils

 • permanent protection of buried

• vessels and tanks

 • Internal protection of water tanks

 • Permanent protection of marine

• Structures

 • "Hot Spot" locations

Magnesium chemical composition
Element Standard High Potential
Aluminum (%) 5.3 - 6.7 0.05 max
Zinc (%) 2.5 - 3.5 0.03 max
Manganese (%) 0.2 - 0.5 0.5 - 1.0
Copper (%) 0.02 max 0.02 max
Nickel (%) 0.001 max 0.002 max
Iron (%) 0.005 max 0.03 max
All Others (%) 0.01 max 0.03 max
Magnesium (%) Remainder Remainder

  Standards:

  NACE-DNV

  ASTM -IPS

Eletrical Properties Standard High Potential
Electrochemical capacity (Ah/Kg) 1230 1230
Closed circuit potential (V) -1.55 -1.75
(Respect to Ag/Agcl reference electrode)
Efficiency (%) 58 49

The most widely specification for magnesium anodes is ASTM B275,ASTM G97.IPS-M-TP750/2, BS 7361, ASTM A283 grade C.

Standard Backfill Composition:

         
GYPSUM (CaSO4)% Bentonite Clay % Sodium Sulfate% Approx.
Resistivity in Ohm-cm
Hydrated Molding Plaster(Plaster of Paris)
(A) 25 --- 75 --- 250
(B) 50 --- 50 --- 250
(C)  --- 50 50 --- 250
(D) 75 --- 20 5 50
           

BORNA Godaz magnesium anodes are also used for protection of offshore structures quay walls and for marine applications in ballast tanks and external ships hulls and rudder and heat exchangers protection.

BORNA Godazmagnesium anodes can be made in various shapes &size to suit individual applications. They normally have steel-bar, rod core or wire for attachment to the structure by welding, cad-welding or either bolts & clamps.

 

The following documents show typical datasheets of Magnesium anode made in BORNA Godaz company.  Also, Other informations such as ITP, QCP, chemical and electrochemical reports and certificates have shown here.

 

Datasheet Sample of BornaGodaz Single Hole Magnesium Anode (Standard Alloy 3.5 Kg) , for cathodic protection of condensers

Datasheet Sample of BornaGodaz Single Hole Magnesium Anode (Standard Alloy 0.5 Kg)

Datasheet Sample of BornaGodaz Magnesium Anode (High Potential Alloy 9 lb - Trapezoidal Section) , for cathodic protection of Buried Structures in soil 

Datasheet Sample of BornaGodaz Magnesium Anode (High Potential Alloy 17 lb - Trapezoidal Section)

Datasheet Sample of BornaGodaz Magnesium Anode (High Potential Alloy 32 lb - Trapezoidal Section)

Datasheet Sample of BornaGodaz Rod Shape Magnesium Anode (Standard Alloy) , for cathodic protection of Heat Exchangers & Condensers

Datasheet Sample of BornaGodaz Rod Shape Magnesium Anode (High Potential Alloy) , for cathodic protection of Heat Exchangers & Condensers

Chemical Analysis Report of BornaGodaz Magnesium Anode (Standard Alloy Grade AZ63B)

Electrochemical Test Report of BornaGodaz Magnesium Anode (Standard Alloy Grade AZ63B)

Chemical Analysis Report of BornaGodaz Magnesium Anode (High Potential Alloy)

Electrochemical Test Report of BornaGodaz Magnesium Anode (High Potential Alloy)

Magnesium Anode ITP

Magnesuim Anode QCP Plan

BornaGodaz ICS Certificate

BornaGodaz Magensim Anode Catalogue - Persian Version

BornaGodaz Magnesium Anode Catalogue - English Version

Aluminum Anode

Aluminum Anode

BORNA Godaz aluminum anodes are specially formulated for cathodic protection system application in sea water, seabed mud and higher resistivity waters . Aluminum anodes are sacrificial type anodes  having an electro-chemical property that makes them suitable for cathodic protection systems with driving voltage of 300 mv against protected steal and rather three times the capacity of zinc anodes. this anodes are capable of achieving high output capacity in mud and brackish water of resistivity up to 150 Ohm cm.

Drawback of pure aluminum is passivating, an oxide film can develop on the surface of the aluminum ingot that makes the material passive. Aluminum alloy sacrificial anodes have been developed so that one or more of the alloys disrupts the protective oxide layer and makes the alloy anodic to promote even corrosion when the anode is placed in the electrolyte.

Typical Applications

  • Offshore Structures 
  • Marine Structures
  • Sheet Pile Walls
  • Submarine Pipelines
  • Tank Internals
  • Shipping

TheBORNA GodazAluminum Alloy Anodes are made from the highest purity aluminum ingot to conform to the following material composition:

       
Aluminum chemical composition    
Element Alloy Type 1 Alloy Type 2 Alloy Type 3
Zinc (%) 0.30 - 0.05 0.30 - 6.0 2.5 - 5.75
Indium (%) ---- ---- 0.015 - 0.040
Hg(%) 0.30 - 0.05 0.35 - 0.5
Cadmium (%) ---- ---- 0.002 max
Silicon (%) 0.11 - 0.21 0.11 - 0.21 0.12 max
Iron (%) 0.13 max 0.13 max 0.09 max
Copper (%) 0.006 max 0.006 max 0.003 max
All others (%) 0.02 max 0.02 max 0.02 max
Aluminum (%) Remainder Remainder Remainder

  Standards:

  NACE - DNV

  U.S.Military

  ASTM - IPS

Eletrical Properties Environment
Sea water Sediments
Electrochemical capacity (Ah/Kg) 2000 1500
Closed circuit potential (V) -1.05 -0.95
(Respect to Ag/Agcl reference electrode)
Efficiency (%) 90 90

BORNA Godazaluminum anodes can be made in various shapes &size to suit individual applications. They normally have steel-bar or rod cores for attachment to the structure by welding, or either bolts & clamps.

The following informations show typical datasheets of Aluminum anode made in BORNA Godaz company.  Also, Other informations such as ITP, QCP and certificates has shown here.

Datasheet Sample of BornaGodaz Bracelet Aluminum Anode

Datasheet Sample of BornaGodaz 2 Holes Aluminum Anode

Datasheet Sample of BornaGodaz Aluminum Anode Trapezius shape

Datasheet Sample of BornaGodaz Jacket Aluminum Anode (Offshore Industry)

Datasheet Sample of BornaGodaz Sphere Aluminum Anode

Chemical Analysis Sample of BornaGodaz Aluminum Anode

Aluminum Anode ITP (Inspection test plan)

Aluminum Anode QCP (Quality test plan)

ACS Certificate

ICS Certificate

Aluminum Anode Casting Line

Aluminum Anode Casting Furnace

Amirkabir Aluminum Anode

Aluminum Anode Sadra Project

Aluminum Anode Sadra Project _ Installation

Aluminum Anode KEPCO Project

 

 

Zinc Anode

Zinc Anode

BORNA GodazSupply the highest quality zinc anodes having a driving potential of 250 mv against protected steal at normal ambient sea water temperature. Zinc anode should not be used for above 50 C medium temperature, however the driving potential will be reduced when the temperature increased. Our supplied anodes perform reliably in seawater and seabed mud with resistivity up to 1000 ohm.cm .

Modern zinc anodes used for cathodic protection are made from high purity zinc (99.99%) alloyed with aluminum and cadmium. The levels of lead, iron and copper are strictly under control.

Typical Applications

  • Submarine pipelines                                       
  • Offshore structures
  • Quay walls
  • Marine applications
  • Ballast tanks
  • Storage tank internals
  • Water tanks
  • Ships hulls
Zinc chemical composetion
Element Alloy Type1 Alloy Type2
Aluminum (%) 0.10 - 0.5 0.005 max
Copper (%) 0.005 max 0.002 max
Iron (%) 0.005 max 0.0014 max
Lead (%) 0.006 max 0.003 max
Cadmium (%) 0.07 max 0.003max
All others (%) 0.02 max 0.012 max
Zinc (%) Remainder Remainder

Standards:

NACE - DNV
U.S.Military
ASTM – IPS
       

Eletrical Properties Environment
Sea water Sediuments
Electrochemical capacity (Ah/Kg) 780 700
Closed circuit potential (V) -1.00 -0.95
(Respect to Ag/Agcl reference electrode)
Efficiency (%) 85 85
     

The capacity of zinc remains almost constant despite changes in operating current density and it is particularly useful when employed in conjunction with well coated structures where low operating currents will be required during the first years of the system life.

BORNA Godazzinc anodes can be made in various shapes &size to suit individual applications. They normally have steel-bar or rod cores for attachment to the structure by welding, or either bolts & clamps.

The following documents show typical datasheets of Zinc anode made in BORNA Godaz company.  Also, Other informations such as ITP, QCP, chemical and electrochemical reports and certificates have shown here.

Datasheet sample of disk zinc anode (Weight=1.4Kg)

Datahsheet sample of droplet zinc anode for cathodic protection of marine structures and ship balast tank  (Gross Weight = 3Kg)

Datahsheet sample of single hole zinc anode with bolt connection for cathodic protection of heat exchangers (Gross Weight = 4Kg)

Datasheet sample of double hole with bolt connection for cathodic protection of heat exchangers (Gross Weight = 10Kg)

Datasheet sample of trapezius zinc anode with weld connection for cathodic protection of marine structures (Gross Weight = 5Kg)

Datasheet sample of rectangular zinc anode with weld connection (Gross Weight = 10Kg)

Chemical analysis report sample of BornaGodaz zinc anode

Electrochemical test report of BornaGodaz zinc anode

Sacrificial Zinc Anode QCP

Sacrificial Zinc Anode ITP

BornaGodaz zinc anode catalogue

ACS Certificate

ICS Certificate

Contact us

02156233930-02156233929
02156232587-02156236590
02156230236
 Info@bornagodaz.com
Tehran Province, Shamsabad Industrial City, Golbarg Number 2

     

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Bornagodaz

BORNA Godaz Company was established on the path of development of BORNA Electronic activities in the field of cathodic protection in 2004. ...

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