A tube connector 10 of the invention is used for a fuel supply device to feed a supply of fuel to a fuel tank FT. The tube connector 10 is attached to the fuel tank FT and is connected with an inlet hose H, which is fastened by a clamp CP. The tube connector 10 has a connector main body 11 that is attached to the fuel tank FT to surround a tank opening FTa, a reinforcing tube 16 that has a flange 16a and is used to reinforce the connector main body 11, and a conduit formation member 18. The conduit formation member 18 has a fixation end 18b that is welded to a welding element 14f of the connector main body 11 to fix the flange 16b of the reinforcing tube 16. This structure of the tube connector 10 ensures secure and easy fixation of the reinforcing tube 16 to the connector main body 11.

 
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