PURPOSE: To obtain the platinum pipe structural body having deformation resistance to a high temp. and high pressure and having high function sand a long life to prevent corrosion with chemicals by inserting and holding a platinum pipe into the spiral hollow party inside a holder, thereby integrating the pipe and the holder.

CONSTITUTION: A pattern which is straight at both ends and has a spiral body is formed of material paraffin wax as wax and after its outer periphery is molded of material ceramics, the wax is melted away by heating and further, the ceramics is sintered, by which the holder 2 internally having the spiral hollow part and having holes at both ends is produced. The platinum pipe 3 made of material Pt is thereafter inserted and pushed into the holder 2 from a hole at its one end, is run along the spiral hollow part and is withdrawn from a hole at the other end, by which the holder and the platinum pipe are integrated. As a result, the structural boy having the high functions and the long life is efficiently and easily produced with good accuracy.