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RP 550mm Graphite Electrode
Irin wannan nau'in lantarki na graphite an yi shi ne da coke na man fetur. An ba da izinin ɗaukar nauyin halin yanzu ƙasa da 12～14A/㎡. Gabaɗaya ana amfani dashi a cikin tanderun wutar lantarki na yau da kullun don yin ƙarfe, yin silicon, yin phosphorus rawaya da sauransu.