The anti-corrosion of oil, natural and gas pipelines are all completed in embalming plants. Now the largest submerged arc spiral welded pipe manufacturers in The sea include Baoji, Qingxian and Liaoyang, all of which have their own anti-corrosion plants. You can ask them if they need anything. Oil pipeline is generally used in 3PE anti-corrosion process, the main anti-corrosion material will not use tape, but in the repair will use radiation crosslinked polyethylene heat shrink sleeve (belt), epoxy resin/radiation crosslinked polyethylene heat shrink sleeve (belt) three layer structure. There are some local gas companies will carry out anti-corrosion treatment of their own small pipelines, but most of them are mainly asphalt anti-corrosion, and the joint department will use shrink sleeve (belt).