(1) E4303: E means electrode, 43 means tensile strength of deposited metal 430MPa, 0 means electrode is suitable for welding in metal position, 03 means welding current type is reverse welding in ac or dc area, and the coating is titanium

(2) e5015e means welding rod; 50 means tensile strength of deposited metal 500MPa; 1 means welding rod is suitable for all-position welding; 15 means low-sodium hydrogen coating, dc reverse welding.

(3) j422j means that the welding rod is structural steel electrode, 42 means that the tensile strength of weld metal is 420MPa, 2 means that the welding rod is titanium calcium type coating, ac/dc positive and negative connection

(4) j507j means that the welding rod is structural steel electrode; 50 means that the tensile strength of weld metal is 500MPa; 7 means that the welding rod is dc reverse welding of low-sodium hydrogen coating.

(5) welding electrode for surfacing: D102, D106, D107, D112, D212, D256, D307, 337, D507Mo, D547Mo, D707, D802, D812, D842

(6) stainless steel electrode: A102 A107 A132 A202 A137 A212 A302 A307 A312 A402 A407 A502 A507 A607 A707 A802

(7) cast iron welding rod: Z100 Z116 Z117 Z122Fe Z208 Z238 Z248 Z258 Z268 Z308 Z408 Z438 Z508

Nickel-based welding rod (8) : ht Ni102Ni112Ni202Ni207Ni307Ni307ANi307BNi317Ni327Ni337Ni347Ni357HT - 103-105

(9) silver electrode: 2%, 5%, 15%, 18%, 25%, 30%, 35%, 45%, 56%, 72%, etc