SURFACE-TREATED STAINLESS-STEEL SHEET EXCELLENT IN SALT DAMAGE/CORROSION RESISTANCE AND WELD RELIABILITY FOR AUTOMOTIVE FUEL TANK AND FOR AUTOMOTIVE FUEL PIPE AND SURFACE-TREATED STAINLESS-STEEL WELDED PIPE WITH EXCELLENT SUITABILITY FOR PIPE EXPANSION PROCESSING FOR AUTOMOTIVE PETROL PIPE

摘要

A surface-treated stainless-steel sheet which is excellent in corrosion resistance under salt damage environments and in weld reliability and is for use as an automotive fuel tank or fuel pipe; and a surface-treated stainless-steel welded pipe for automotive petrol pipes. The surface-treated stainless-steel sheet is characterized by comprising a stainless-steel sheet base and, formed on the surface thereof, either an anticorrosive deposit layer comprising tin and incidental impurities and deposited in an amount of 10-200 g/m2 or an anticorrosive deposit layer comprising tin, 0.8-10.0 mass% zinc, and incidental impurities and deposited in an amount of 10-200 g/m2.