15CrMoG为珠光体耐热钢，建议，手弧焊焊条R307钨极氩弧焊焊丝R30气焊丝H08CrMo或H13CrMoCO2焊焊丝H08Mn2SiCrMo埋弧自动焊焊丝H08Cr...