Generally, in the production process of pressure vessels such as storage tanks, pressure tanks, and process tanks, the submerged arc automatic welding is often used to weld the longitudinal seams of the tank body and the inner and outer weld seams of the ring seam. This paper describes the repair of the internal defects of the stainless steel submerged arc welding seam when the material of the pressure vessel is 0Cr18Ni9, 00Cr18Ni9 and the thickness is 10~34mm.
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