17 non-metal flexible PVC pipes, couplings, joints, and fittings therefor containing yellow pigment; non-metal flexible PVC pipes, couplings, joints, and fittings therefor containing yellow pigment for irrigation, municipal water, municipal sewers, agriculture, agricultural irrigation, mining, and energy applications; non-metal flexible PVC pipes, couplings, joints, and fittings therefor containing yellow pigment for irrigation, municipal water, municipal sewers, agriculture, agricultural irrigation, mining, and energy applications systems; non-metal flexible PVC pipes made from resin containing yellow pigment, impact modifiers and UV inhibitors, couplings, joints, and fittings therefor for municipal water, municipal sewers, agricultural irrigation, mining, or energy uses