Kumwell ground rods
are made by special process, molecular bonding purity
electrolytic coating of copper 99.9 % deposited over a layer of nickel onto high tensile
and low carbon steel cores to ensure a perfect and even bonding between
the steel and copper. Kumwell ground rods has a copper layer whose minimum
thickness is 254 micron met IEC 62561-2 and UL standard can resistance a severe
corrosion to acidic and high concession of salt environment for long lifetime up to 40 years
Standard size diameters being commonly used are 1/2″, 3/4″, 5/8″ and 1″.
Standard lengths being commonly used are 4′ to 10′.
Thread type ground rods are available for extensible
the length of ground rods by coupling In addition,
Kumwell has another ground rod type such as solid copper
and stainless steel (316L).
Standard Test and Inspection
Kumwell ground rod test and inspection follow by
international standard UL 467 and IEC 62561-2