Characteristics and applicability of repair in pipelines Corrosion resistance: non-metallic corrosion resistance; Self-pressure: bare pipe pressure 1.6MPa, sea breaking pressure 4.8MPa; Applying L fast: applying 1 speed seat 300-400 m/h; Overbend: One pas
B-type sleeve repair technology Advantage B-type sleeve repair consists of a pair of semi-circular steel guard plates covering the defects of the pipeline, which are welded together by longitudinal butt weld and the whole set of short ends are fixed on th
