a three-layer field joint coating system for pipeline operating temperature separately at 50 . JYHT50, JYHT60 ... is a three-layer field joint coating system for pipeline operating temperature separately at 50,60,80, which consists ... The system is compatible with line coatings for PE, FBE, Coal Tar, Tape & Asphalt. Radiation Crosslinked Heat Shrink Sleeves For Corrosion Protection Of Oil & Gas Pipeline