Joint coating method for oil gas pipeline after repairing the corrosion detection
A technology for oil and gas pipelines and defects, which is applied in pipeline anticorrosion/rust protection, pipeline protection, pipes/pipe joints/pipe fittings, etc. It can solve problems such as poor insulation, improve insulation performance, improve insulation sealing effect, and prolong service life Effect
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[0018] Embodiment: Wrap the reinforcing material on the polished steel pipe to the overlapping surface, apply intermediate glue, and then wrap the joint material. The following construction procedure shall be adopted for repairing defective pipes after reinforcement:
[0019] A. First of all, carry out surface pretreatment on the patching part, remove welding slag, burrs, grease and dirt and other attachments on the surface of the steel pipe, remove dirt, impurities on the original anti-corrosion layer and reinforcing tape, wrapping materials and obvious surface Scrape the concave and convex parts; then use spraying method or mechanical method to remove rust. The quality of surface pretreatment should reach Sa21 / 2 level. Derusting reaches 3mm of exposed silvery white surface.
[0020] B. Treat the defects exposed on the surface of the steel pipe, remove the dust and abrasives attached to the surface, and keep the surface of the steel pipe dry. When rust returns or surface c...
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