(1) Scope of application and application of epoxy sleeve repair technology

(a) The diameter range is from 32 to 1620mm.

(b) The maximum pressure can reach 12MPa.

(c) Temperature resistance -30~+80 ℃.

(d) The pipeline types include oil, natural gas, refined oil, liquefied petroleum gas transmission pipelines, petrochemical plant pipelines, and lifting pipelines for offshore oil platforms.

(e) Can repair various defects such as corrosion, cracks, distortion or indentation (in both circumferential and axial directions), irregular weld beads, etc.

(2) A large area capable of long-term repair of defects

(a) The length of pipe wall defects and cracks is not limited, with an average depth of up to 80% of the wall thickness, and larger depths up to 90%.

(b) Twisted deformation reaches 9% of the pipe diameter, and wall defects and cracks reach 12% of the wall thickness.

(c) Epoxy composite casing and its application: Wall defects and cracks can reach up to 60% of the circumference of the pipeline. The longer casing group is 14m on crude oil pipelines and 20m on natural gas pipelines.