Aluminum Slender Stand-off Anode with Cow Horn Tubular Insert

Slender Stand-off Aluminum Anode with Cow Horn Tubular Insert

This slender stand-off aluminium anode with trapezoidal cross-section is cast on a bending tube insert. The cow horn tubular insert protruding from both ends 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, Anode for Harbour Facility, Anode for Subsea Structure, Galvanic Anode, Platform 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.

Item No.	Anode Dimensions				Insert Dimensions		Weight
Item No.	Wt	Wb	H	La	Diameter	Lc	N.W	G.W
JA-AL-MST1	5.9” (150 mm)	6.7” (170 mm)	6.3” (160 mm)	35.4” (900 mm)	2.0” (50 mm)	51.2” (1300 mm)	124.6 lbs (56.5 kg)	147.7 lbs (67 kg)
JA-AL-MST2	6.7” (170 mm)	7.9” (200 mm)	7.1” (180 mm)	59.1” (1500 mm)	2.0” (50 mm)	74.8” (1900 mm)	277.8 lbs (126 kg)	308.6 lbs (140 kg)
JA-AL-MST3	7.9” (200 mm)	8.3” (210 mm)	8.7” (220 mm)	63.0” (1600 mm)	2.4” (60 mm)	78.7” (2000 mm)	400.1 lbs (181.5 kg)	440.9 lbs (200 kg)
JA-AL-MST4	8.7” (220 mm)	9.4” (240 mm)	9.1” (230 mm)	90.6” (2300 mm)	3.5” (89 mm)	110.2” (2800 mm)	637.1 lbs (289 kg)	715.4 lbs (324.5 kg)

Main Technical Parameters

Shape	Stand-off
Substrate	Aluminium
Environment	Seawater
Application	Offshore Platform

Testing

We employ 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. Third party testing is conducted by customer’s special request at extra charge.

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