A welding torch comprising: a torch body having a wire path through which a welding wire can extend along an axis portion, a gas supply path through which gas from a gas source can be supplied, and a current supply path through which electric current from a power source can be supplied; a nozzle having a gas ejection port at a distal end portion thereof through which gas can be discharged, the torch body being mounted to a base end portion of the nozzle, the welding torch being suitable for discharging gas from the gas ejection port to weld a work piece using the welding wire; a first tip body provided inside the nozzle and electrically connected to the torch body, the welding wire, the gas, and the current being supplied to the first tip body through the torch body; a first tip provided at a distal end of the first tip body to supply the current having passed through the first tip body to the welding wire; an insulating bushing formed of an insulative material and disposed on an outer periphery of the first tip body inside the nozzle; a second tip body accommodating the first tip body with the insulating bushing interposed therebetween, the second tip body being supplied with electric current from the power source; and a second tip provided at a distal end of the second tip body to supply the current having passed through the second tip body to the welding wire, the first and second tips being configured so that the welding wire can extend through the first tip and be inserted through the second tip, wherein the first and second tips are axially arranged, in two stages, at a predetermined distance from each other and supply electric current to the welding wire, and wherein the second tip body comprises a distal-end portion and a base-end portion threadedly engaged with one another, characterised in that the threaded engagement (7i, 7j) of the distal-end portion and the base-end portion are at the same axial position along the length of the welding torch as the first tip such that upon removal of the distal-end portion the first tip extends beyond the threaded engagement, thereby providing access to the first tip for replacement thereof. a torch body having a wire path through which a welding wire can extend along an axis portion, a gas supply path through which gas from a gas source can be supplied, and a current supply path through which electric current from a power source can be supplied; a nozzle having a gas ejection port at a distal end portion thereof through which gas can be discharged, the torch body being mounted to a base end portion of the nozzle, the welding torch being suitable for discharging gas from the gas ejection port to weld a work piece using the welding wire; a first tip body provided inside the nozzle and electrically connected to the torch body, the welding wire, the gas, and the current being supplied to the first tip body through the torch body; a first tip provided at a distal end of the first tip body to supply the current having passed through the first tip body to the welding wire; an insulating bushing formed of an insulative material and disposed on an outer periphery of the first tip body inside the nozzle; a second tip body accommodating the first tip body with the insulating bushing interposed therebetween, the second tip body being supplied with electric current from the power source; and a second tip provided at a distal end of the second tip body to supply the current having passed through the second tip body to the welding wire, the first and second tips being configured so that the welding wire can extend through the first tip and be inserted through the second tip, wherein the first and second tips are axially arranged, in two stages, at a predetermined distance from each other and supply electric current to the welding wire, and wherein the second tip body comprises a distal-end portion and a base-end portion threadedly engaged with one another, characterised in that the threaded engagement (7i, 7j) of the distal-end portion and the base-end portion are at the same axial position along the length of the welding torch as the first tip such that upon removal of the distal-end portion the first tip extends beyond the threaded engagement, thereby providing access to the first tip for replacement thereof.