Bolt-On Type Split Sleeves are repair fitting that can be used to seal oil or gas lines leaks caused by corrosion or damage on onshore and subsea . They are suit for oil or gas lines with the operation pressure up to as high as 3000 psi . Those are easy and safe to install, bolt-on fittings that stop the leak once the fitting is properly installed . The fittings are not welded to the pipeline and they can be removed, reconditioned and returned to the customer's safety stock . Bolt-On Split Sleeves come in numerous configurations, including Elbow (EII), Tee and Cross. All custom designed to repair curved pipeline section and pipeline joints .