Gaswelding气焊CJ301Coppergasweldingflux铜气焊熔剂Meltingpointisabout650℃,fluxforgasweldingandbrazingofcopperandcopperalloys.熔点约650℃，铜及铜合金气焊或钎焊的助熔剂CJ401Aluminumgasweldingflux铝气焊熔剂Meltingpointisabout560℃,fluxforgasweldingofaluminumandaluminumalloys.熔点约560℃，铝及铝合金气焊的助熔剂)