PURPOSE:To improve the corrosion resistivity of base metal through explosive welding of material superior to the base metal in the corrosion resistivity to the welded zone and the inner surface of the pipes at a welded joint therebetween following thereof prior to the production of a steel pipe. CONSTITUTION:A clad material 2 superior to the base metal in the corrosion resistivity, a property least deteriorated by welding heat, is explosively, welded to a raw plate material for producing a stainless steel pipe at the welded zone and a welded joint between pipes following thereof in forming the pipe. The width of 15mm. is enough for the clad material and the thickness thereof is determined with due consideration given to the shape of the edge preparation. The clad material 2 and 2 can be mechanically joined with the plate material 1 at the bend, thereby preventing flaking at bending.
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