High pressure pipeline opening is a common technical operation in many industrial fields, especially in oil, gas, chemical industry and other industries. The process must strictly follow standards and operating procedures to ensure the integrity of the co
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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
