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For 490MPa tensile steel at shipbuilding, plant, bridge, bridges, ASME Boiler & Pressure Vessel Code, Section Ⅸ
- KS: D 7104 : YFL-A/C503R
- AWS: A5.20 : E71T-12C/12M H4
- AWS: A5.36 : E71T12-C1/M21A2-CS2-H4
- EN: ISO 17632-A : T42 3 P C1 1 H5 / M21 1 H1
- EN: ISO 17632-B : T49 3 T1-1 C1 A H5 / 1 M21 A H10
- JIS: Z 3313 : T49 3 T1-1 C/M A H10
Served as both carbon dioxide and mixture gas, and stable arc performance in almost welding current
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