1results about How to "Avoid intergranular corrosion" patented technology

The utility model discloses a bimetallic wear -resisting composite pipeline, including the butt joint of first pipeline, second pipeline, first pipeline includes first base layer pipeline and sets up first wear -resistant stainless steel layer in first base layer pipeline inside, and second pipeline includes second base layer pipeline and sets up second wear -resistant stainless steel layer outside second base layer pipeline, and the butt joint end between first wear -resistant stainless steel layer and second wear -resistant stainless steel layer forms first weld groove for welding connection, and the butt joint end between first base layer pipeline and second base layer pipeline is provided with the isolating ring, and the butt joint end of isolating ring two ends with first base layer pipeline respectively forms second weld groove for welding, and the butt joint end of isolating ring with second base layer pipeline forms third weld groove for welding. The utility model discloses connecting structure good stability, and the service life of pipeline is long.