Aluminum Slender Stand-off Anode with Flat Bar Insert Protruding from Back Face

Slender Stand-Off Aluminum Anode with Cranked Flat Bar Insert

This slender stand-off aluminium anode with trapezoidal cross-section is cast on a cranked galvanized steel flat bar insert. The cast-in steel core protruding from back face can be directly welded to the surface of protected steel structure, ensuring a reliable connection.

As the satnd-off aluminium anode protrudes from the surface installated, so the anode material is not in direct contact with the surface to be protected. Thus, the stand-off anode is better utilized over their lifetime —— its anode utilization factor can reach up to 85 to 90%.

It is used for the cathodic protection of inshore structures or marine engineering facilities, including offshore platform jackets, drilling rigs, harbour walls and jetties, wind farms, reclamation’s pile, sheet pile, etc.

Category:

Aluminium Anodes

Tags:

Aluminium Anode, Aluminum Anodes for Offshore Platform and Marine Structure, Anode for Harbour Facility, Anodes for Marine Cathodic Protection, Galvanic Anode, Marine Anode, Sacrificial Anode Cathodic Protection, Slender Anode, Stand-off Anode, Structural Anode

Quality Substrate Material
Casted in low-iron, high-purity alloys, our slender stand-off anode is designed as per the standard of ISO, NACE, DNV.

Element	GALVALUM III	DNV-RP-B401-2011	GS EP COR 201
Zinc (Zn)	2.0% ~ 6.0%	2.5% ~ 5.75%	4.75% ~ 5.75%
Indium (In)	0.01% ~ 0.02%	0.015% ~ 0.04%	0.015% ~ 0.02%
Silicon (Si)	0.08% ~ 0.2%	0.12% max.	0.06% ~ 0.12%
Iron (Fe)	0.13% max.	0.09% max.	0.12% max.
Copper (Cu)	0.006% max.	0.003% max.	0.003% max.
Cadmium (Cd)	—	0.002% max.	0.002% max.
Total Impurities	0.1% max.	0.1% max.	0.1% max.
Aluminum (Al)	Remainder	Remainder	Remainder

Low Driving Voltage
This stand-off aluminium anode provides a stable performance in seawater and electrolytes containing chloride ions as its operating potential is kept between -1.05 to -1.10 volts relative to saturated calomel electrode(SCE).

Technical Measurement	Performance
Open Circuit Voltage (-V)	1.10 min.
Closed Circuit Voltage (-V)	1.05 min.
Current Capacity	1135 A.h/lbs (2500 A.h/kg)
Current Efficiency	90% min.
Consumption Rate	7.6 lbs/A·y (3.4 kg/A·y)

Much Lighter in Weight
The stand-off aluminium anode is less dense than zinc, making it lighter and easier for handling when fitting.

Customized Configurations
The slender stand-off anodes are further classified into Short and Long, depending on their ratio of length to width. A range of standard stand-off anodes are illustrated below, custom-made configurations are available upon request.

Aluminium Hull Anode with Flat Bar Stand-off from Casting Face Line Drawing

Item No.	Anode Dimensions			Anode Weight
Item No.	W	H	L	Anode Weight
JA-AL-MBF1	2″ (50.8 mm)	2″ (50.8 mm)	48″ (1219 mm)	21 lbs (9.5 kg)
JA-AL-MBF2	2″ (50.8 mm)	2″ (50.8 mm)	60″ (1524 mm)	26 lbs (11.8 kg)
JA-AL-MBF3	2 ½″ (63.5 mm)	2 ½″ (63.5 mm)	48″ (1219 mm)	30 lbs (13.6 kg)
JA-AL-MBF4	2 ½″ (63.5 mm)	2 ½″ (63.5 mm)	60″ (1524 mm)	39 lbs (17.7 kg)
JA-AL-MBF5	3″ (76.2 mm)	3″ (76.2 mm)	48″ (1219 mm)	48 lbs (21.8 kg)

Main Technical Parameters

Shape	Stand-off
Substrate	Aluminium
Environment	Seawater
Application	Offshore Platform

Testing

We employ ISO 9001:2015 quality management system and rigorous internal testing standards to ensure the optimum lifespan and performance of our anodes. Each anode is labelled with a unique serial number for quality tracking.

Testing Details	Chemical Composition	Electrochemical Performance	Physical Properties
Testing Standard	DNV-RP-B401	NACE TM0190	Foundry ITP
Testing Content	Chemical Analysis	Circuit Potential / Current Capacity / Current Efficiency / Electrical Resistance	Dimension & Weight / Surface Finish / Steel Insert
Equipments	Optical Emission Spectrometer OBLF QSN 750	Electrochemical Analyzer EPI 200	Calibrated Digital Measuring Devices