Ko te prefix 'E' e tohu ana i te electrode pera i etahi atu whakaritenga. Ko nga reta 'ER' e tohu ana ka taea te whakamahi i te konganuku whakakii hei hiko, hei rakau ranei. Mo te A5.18, ko te nama 70 e tohu ana i te kaha o te kaha iti rawa, he maha o te 1000 psi, o te whakarewa i roto i te weld whakamatautau i mahia i runga i te tohu A5.18. Waihoki, mo te A5.18M.
Ko te reta 'S' e tohu ana i te hiko hiko totoka ranei. kaua e wareware ka taea hoki e koe te whakamahi waea whakakikorua kore parahi.
Kei roto i tenei whakakitenga nga konganuku whakakii kua tohua hei ER70S-G [ER48S-G], E70C-G [E48C-G] me E70C-GS [E48C-GS]. ER80S-G.Ko te 'G' (whakawhitinga maha) ko te 'GS'(whakawhitinga kotahi) e tohu ana ko te whakarewa whakakī he 'whanui' whakarōpūtanga.