Abstract:
Studded tubes are nowadays often utilized in the
manufacture of power generating and processing equipment. They
are actually the steel tubes with a large number of iron studs
welded onto their external surface. The studding increases the
surface of tubes over which the heat is transferred so that
consequently the equipment fitted with studded tubes is of
smaller and lighter design. This becomes particularly significant
in case of ship boilers. This equipment must be of smaller and
lighter design, so that more space is left for useful cargo. In
the past the finned tubes were used instead of ordinary tubes in
the process of manufacture of ship boilers. Originally fins had
been wound round the tubes and subsequently welded onto the tube
structure. Nowadays the ship boilers are for the most part
fitted with the studded tubes with studs closely packed together.
The stud diameter is 5-8 mm while the distance between the studs
is 11-15 mm in radial and axial direction.