Standard: ASTM A 312/A 312M
Grade: TP304, TP304L, TP316L, TP321, TP316Ti, TP310S  etc.
Manufacture process: Cold draw or Cold roll,

Annealed, and Pickled.
Testing：Visual Check for surface,

and Micrometer for the

W.T and O.D.                                                                

Spectral Analysis to test the Chemical Composition.  
Eddy Current Test or Hydrostatic Test in accordance to

specification A999/A999 M.
Ultrasonic test can be done by customer’s request.
Mechanical Property test of Tensile Strength, Yielding Point,

Elongation and Flattening test by Mechanical Test Machine

and Hardness by Rockwell test.