The application of plastic steel repair agents in repairing corrosion defects in pipelines and equipment has been common,but it is rarely used in repairing girth weld defects in pipelines.In order to repair the girth weld defect of oil and gas pipeline without firing,this re-search uses a plastic steel repair agent to replace the liquid epoxy resin in the steel epoxy sleeve,forming a plastic steel sleeve.Its axial load resistance is verified by using the full scale internal pressure three-point bending method.The results indicate that the plastic steel sleeve is more capable of sharing external axial loads than the epoxy sleeve.
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