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1, tooth shaped metal ring shall be for the whole structure. Such as the use of welding structure, should meet the following requirements:
A, it shall seek the consent of the user;
B, should use the full penetration weld structure type, should not exceed 2 welded joints, welding shall be carried out after the stress relief heat treatment;
C, cover layer, welding gear shape and size should be consistent with the other parts remain.
Plane 2, tooth shaped metal ring should be not greater than the outer diameter of the gasket is 1/100.
3, coating materials shall be securely paste shaped metal ring on the teeth, not fall during the transportation and installation process. Using adhesive to metal materials do not produce corrosion. The splice joints should not be more than 2, and the two lap, overlap with oblique stitching; or the use of docking, the seams with a thin covering layer material to be covered.
4, activity on the central and the tooth shaped metal ring on the groove should maintain an appropriate gap, in the thermal expansion, without prejudice to the freedom of movement. Activities on the central can adopt welding.