ASTM A860 WPHY 60 are Wrought High Yield fittings and are generally used at High-pressure requirements. A860 refers to the high strength of the fittings.ASTM A860 WPHY Pipe Fittings are known for high tensile strength and corrosion resistance . Available in numerous specifications, these ASTM A860 Fittings are manufactured with high-grade steel & tested by a quality expertise team.