API 650 mixed material tanks seal membrane

In order to prevent the deformation of the bottom of metal vertical storage tank, API 650 mixed material tanks during welding, the number of welders should be reasonably distributed. When welding metal vertical API 650 mixed material tanks, personnel and welding position shall be reasonably allocated according to the actual situation of welding personnel, and random welding is not allowed.

Structural shapes of 9% and 5% nickel steel may be furnished to the chemical and physical requirements of ASTM A353, A553, or A645. Physical tests shall be in accordance with the requirements of ASTM A6.
API 650 mixed material tanks used Piping, Tubing, and Forgings
Material used for piping, tubing, and forgings shall be compatible in welding strength, and thermal expansion coefficient with the tank shell material. In addition to the specific requirements of this appendix, all piping within the limitations of 1.3.2 shall fulfill the minimum requirements of ASME B31.3.

API 650 Application As described by the American Petroleum Institute, the fabrication and installation of our surface welded API 650 mixed material tanks steel storage tanks is normally used in industrial applications. In general, our standards for industrial on-site installation of storage tanks are established according to API 650, API 620 and API 12D.