1.The plumbness tolerance of tubesheet sealing face to center axis shall be within 0.50mm.
2.The plumbness tolerance for tube hole center axis to tubesheet sealing face shall be not exceed 0.06mm.
3. The hole diameter and tolerance of tube sheet according to the drawing, the tolerance is not less than 0.25mm for 4% of tube hole.
4. No crack and defect on all surface of which decrease strength and connection reliability is allowed. |