Z238 cast iron electrode 
 Model GB / T: EZCQ 
 Description: low carbon steel core, strong graphite cast iron welding rod, adding a certain amount of balls as agent, so that the graphite deposited metal in the slow cooling process of spherical precipitates, mechanical properties, and AC DC. 
 Uses: welding ductile iron. 
 Chemical Composition of Deposited Metal /% 
 C 3.2-4.2 Si 3.2-4 Mn ≤ 0.8 Fe I Ni ≤ 1 nodulizer 0.04-0.15 

 Z238DF cast iron electrode 
 Model GB / T: EZCQ 
 Description: The steel core iron cold welding rod, adding a special agent of globalization and strong ferrite elements, has a good crack resistance and mechanical properties, AC, DC. 
 Uses: mainly used for surface processing of various types of ductile iron and non-working side of welding. 
 Chemical Composition of Deposited Metal /% 
 C 3.2-4 Si 3.2-4 Mn ≤ 0.8 Fe I Ni ≤ 1 nodulizer 0.04-0.15 

 Z238SnCu cast iron electrode 
 Model GB / T: EZCQ 
 Description: low carbon steel core, strong graphite cast iron welding rod, adding a certain amount of balls to strengthen elements of the agent and tin-copper, deposited metal has a high ball of stability, mechanical properties, and AC DC. 
 Uses: ductile iron, compacted graphite cast iron, alloy cast iron, malleable iron and gray cast iron welding and welding 
 Chemical Composition of Deposited Metal /% 
 C 3.5-4 Si 3.5 Mn ≤ 0.8 RE Mg Cu Sn amount