... guideJYHT50, JYHT60, JYHT80 JYHT50, JYHT60, JYHT80 is a three-layer field joint coating system for pipeline operating temperature separately at 50,60,80 ... solvent-free liquid epoxy primer, a wraparound HSS and a Closure Patch. The system is compatible with line coatings for PE, FBE, Coal Tar, Tape ...