母材15CrMo 13CrMo44焊条型号E5515-B2焊条牌号R307气保焊丝ER55-B2 ER55-B2L 氩弧焊丝 TIG-R30 TIG-R31 TIG-34母材12Cr1MoV 13CrMoV42焊条型号E5515-B2-V焊条牌号R317气保焊丝ER55B2MnV氩弧焊丝TIG-R31 TIG-34母材12Cr2Mo(g) 12Cr2Mo1焊条型号E6015-B3焊条牌号R407气保焊丝ER62-B3氩弧焊丝TIG-R40...