Ground rod coppered threaded (D 12/14/17 mm; L 1.2 / 1.5 / 1.8 / 2.4 / 3 m)

Ground rod

Product items: GL-10001 / GL-10002 / GL-10003 / GL-10004 / GL-10005
GL-10011 / GL-10012 / GL-10013 / GL-10014 / GL-10015
GL-10021 / GL-10022 / GL-10023 / GL-10024 / GL-10025

Rod made of drawn steel, galvanically coated with pure copper (99.9%), having strong molecular adhesion to steel. Steel rod has high tensile strength of 600 N / mm², so that it can be plugged to great depth with a breaker hammer.

The copper coating of not less than 0.250 mm thick ensures that the rod hammered into the ground is safe for at least 30 years.

The ends of the rods are threaded by rolling application method  which allows to connect them to each other with the help of a coupler - to create a ground electrode of great length.

 

D12 GL-10001 GL-10002 GL-10003 GL-10004 GL-10005
Rod diameter: 11 mm 11 mm 11 mm 11 mm 11 mm
Thread diameter: 12,7 mm 12,7 mm 12,7 mm 12,7 mm 12,7 mm
Length: 1,21 m 1,51 m 1,81 m 2,41 m 3,1 m
Weight: 1,20 kg 1,50 kg 1,80 kg 2,40 kg 3,0 kg
D14 GL-10011 GL-10012 GL-10013 GL-10014 GL-10015
Rod diameter: 14.2 mm 14.2 mm 14.2 mm 14.2 mm 14.2 mm
Thread diameter: 16 mm 16 mm 16 mm 16 mm 16 mm
Length: 1,21 m 1,51 m 1,81 m 2,41 m 3,1 m
Weight: 1,50 kg 1.90 kg 2.3 kg 3.12 kg 3,8 kg
D17 GL-10021 GL-10022 GL-10023 GL-10024 GL-10025
Rod diameter: 17.2 mm 17.2 mm 17.2 mm 17.2 mm 17.2 mm
Thread diameter: 19 mm 19 mm 19 mm 19 mm 19 mm
Length: 1,21 m 1,51 m 1,81 m 2,41 m 3,1 m
Weight: 2.2 kg 2.75 kg 3.4 kg 4.35 kg 5.44 kg

Price GL-10001 - 1 260,00 rbl. (upon request)
Price GL-10002 - 1 570,00 rbl. (upon request)
Price GL-10003 - 1 890,00 rbl. (upon request)
Price GL-10004 - 2 520,00 rbl. (upon request)
Price GL-10005 - 3 150,00 rbl. (upon request)

Price GL-10011 - 1 610,00 rbl. (upon request)
Price GL-10012 - 1 060,00 rbl. (Special price)
Price GL-10013 - 1 890,00 rbl. (upon request)
Price GL-10014 - 2 520,00 rbl. (upon request)
Price GL-10015 - 3 150,00 rbl. (upon request)

Price GL-10021 - 1 540,00 rbl.
Price GL-10022 - 1 620,00 rbl.
Price GL-10023 - 3 670,00 rbl. (upon request)
Price GL-10024 - 4 590,00 rbl. (upon request)
Price GL-10025 - 4 130,00 rbl. (upon request)

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Copper bonding technology

The key factor in the manufacture of a high-quality ground rod is formation of a firm homogeneous copper coating of the required thickness with minimal impurity elements on a steel blank.

On a separate page "steel" you will see a detailed description of the main characteristics, processes during the manufacture and test of coating.

Comparison with galvanized rods

From 1910 to 1955 the National Institute of Standards and Technology of the United States (NIST) held an extensive study of underground corrosion, during which 36 500 samples representing 333 different coatings of ferrous and nonferrous metals and protective materials were tested in 128 locations across the United States *. This study is considered to be one of the most complete corrosion studies ever held.

One of the results of this study was the fact that the ground rod coated  with 254 micron copper retains its technical characteristics for more than 40 years in the majority of soil types. Rod electrodes coated with 99.06 microns of zinc can maintain their qualities in the same soils for only 10-15 years.

Besides, the term of protection of zinc coating decreases in proportion to the increase of the number of metal structures in the ground, located close to the electrodes (the more structures - the less the coating serves / the faster it "disappears"). Examples of these designs can be: reinforcement of building foundations, pipes, etc.

Corroded copper plated earthing pin

Ground rod with copper coating 254 microns thick, extracted from the soil (clay loam) after 10 years

Corrosion of galvanized earthing pin

99-micron thick zinc-coated ground rod extracted from the soil (clay loam) 10 years later

Another study of corrosion properties of copper coating was held by a Polish company GALMAR. Artificial aging of samples in the conditions simulating aggressive ground ( "acid" moor), showed that the ground rod with a copper coating of 250 micron retains the necessary technical characteristics for at least 30 years..

* Publication:
Underground corrosion (United States. National Bureau of Standards. Circular 579)
Author: Melvin Romanoff; Publisher: U.S. Govt. Print. Off., 1957

 

Comparison with copper-bonded rods
of noname * -manufacturers

Galmar VS noname

Often, noname-manufacturers use unknown materials and technologies for coating. The consequence of this is disturbance (eg, corrosion) of the coating material at the storage warehouses.

On the right for comparison - GALMAR rod and coupler.

* noname (no name) - here: a manufacturer, not having his own brand with a market goodwill.

 

Sketch of the grounding rod GL-10012

Sketch of the ground rod GL-10012

Dimension drawing of the core
grounding GL-10012

Ground rod  dimensional drawing GL-10012


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