... JYHT60, JYHT80 JYHT50, JYHT60, JYHT80 is a three-layer field joint coating system for pipeline operating temperature separately at 50,60,80 ... Tape & Asphalt.FRD, FRYFRD, FRY is a two-layer field joint coating system for pipeline operating at ambient temperature. FRD system consists ... coated with a hot- melt adhesive layer. FRD, FRY system is compatible with line coatings for PE, Steel, FBE, Coal Tar, ...