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. Specification: O.D: 1/8 - 24 inch, W.T: SCH5S, SCH10S, SCH40S, SCH80S, SCH160 etc. or Non-regular sizes as requested.

--maya