Copper geschweißte Stahl Erde Rod

1,Surface Material of Bimetallic is oxygen-free copper with better anticorrosion and good electric conductivity. 2, Core Material of Bimetallic Earth Electrodes is high grade carbon steel with high tensile strength and good magnetoconductivity. 3, Made by Horizontal Continuous Casting technics, steel & copper Molecules combined perfectly.4, Length as customers' requirement.,Part No.Diameter (mm)Length(m)LYET1425142.5(Un-thread)LYET1430143.0LYET1625162.5LYET1630163.0LYET1825182.5LYET1830183.0LYET2025252.5LYET2030303.0LYET2225222.5LYET2230223.0LYET2525252.5LYET2530253.0LYET1271212.71.2(threaded rods for extension )LYET1271512.71.5LYET581214.21.2LYET581514.21.5LYET341217.21.2LYET341517.21.5LYET2012201.2LYET2015201.5thickness of copper layer is not less than 1000microns.