of the present invention is apparent a double wound stainless steel pipe was obtained in the same manner as in example 1 except that the furnace temperature of the electric resistance furnace having a reducing gas atmosphere was made 1120 u00b0 c in brazing and was tested in the same manner to obtain the following results this example is of brazing an electrically seamed pipe made of a stainless steel to a connector eye joint made of a carbon steel pipe and was made in the following manner an electrically seamed pipe made of a stainless steel and having the same plating layer on the outer peripheral surface was obtained in the same manner as in example 1 except that the stainless steel strap was replaced with an electrically seamed pipe made of a stainless steel of sus 27 an outside diameter of 10 0 mm thickness of 0 7 mm and length of 5000 mm the connector was made of a carbon steel and was therefore used without being plated the connecting port of said connector was projected by 5 mm out of the peripheral wall of the connector and the opposed electrically seamed pipe was slidably fitted thereof into it a pasty brazing material obtained by mixing a powder alloy of 80 by weight copper 20 by weight tin with pasty methyl cellulose was used the electrically seamed pipe made of a.