Polyamide curing agent DH-115 Description DH-115 is a flexible polyamide hardener engineered for pipe coating and pipeline protection applications. Its flexible cured film accommodates thermal expansion and contraction of metal pipes while maintaining protective integrity against soil and atmospheric corrosion. Specifications Property Value Appearance Amber liquid Color (Gardner) 9 max AHEW (g/eq) 200 Amine Value (mgKOH/g) 180-220 Viscosity @40℃ (cps) 10,000-29,000 Solid