large diameter seamless steel pipe

We are DNV ISO9001 2000 CERTIFICATED Manufacturer and Exporter specializing in Seamless Stainless Steel Pipes and Tubes, with standard: ASTM A312, ASTM A213, ASTM A269, Grade: TP304,TP304L,TP316L,TP321,TP310S Etc,Seamless steel pipes and tubes.with standard, ASTM A 53/A 53M,ASTM A 106,DIN1629/2448 (EN10297-1),DIN2391,SA179,API SPEC 5L Our Special advantage,DUAL STANDARD WITH DUAL GRADE materials. ASTM A269/A213,WITH GRADE,TP316/TP316L,WITH THE NICKEL CONTENT AT LEAST 12%. We have All the relevant testing equipment to guarantee the quality, 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.