This kind of seamless stainless tube is specially used for chemical and hydraulic high-pressure vessel.  There are some special requirements on property in order to stand the special high-pressure environment:
Water Press≥100MPa;
 Inter-granular corrosion testing apparatus: no cracks;
 Flaring test: no cracks;
Flaring test: no cracks
The Producing Process as following:
round bar---inspection & analysis---cut to length---centering---peel---heating---perforation---inspection of size---pickling---inspection of surface---lubricating---cold-drawing---degreasing---annealing---straightening---cut---pickling/passivating---final inspection---marking---packing---shipping

This kind of seamless stainless tube is specially used for chemical and hydraulic high-pressure vessels as following  classifications:
A. Reacting Vessel such as reactor, producer, synthetic tower, etc.
B. Heat Transfer Vessel such as heat exchanger, cooler, heater, etc.
C. Separation Vessel such as separator, filter, bumper, desiccators, etc.
D. Storage-transport vessel such as storage tank, tank wagon, etc.