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GB/T10045T 49 2 T15-1 C1 A
AWS A5.18E70C-GC
AWS A5.18M E49C-GC
ISO 17632-A: T 42 2 M C1 1
ISO 17632-B: T49 2 T15-1 C1 A
JIS Z3313 T492T15-1CA/1MA-U
GB/T 5293S 49A 4 FB-SU41
AWS A5.17F7A/P4-EH14
AWS A5.17M F49A/P4-EH14
ISO 14171-A:S 42 2 FB S4
ISO 14171-B:S49A4 FB SU41