Specifications Ductile Iron Grooved Pipe Fittings 1.Best price and high quality. 2 Standard: ANSI,ASME,DIN,API,ASTM Main features 1. Beautiful shape: smooth inner and outer walls,small water resistance, soft colors, beautiful graphics .2 Surface treatment can choose to use electrostatic spray, hot dip zinc, impregnating, dacromet processing according to different environments3 Pipe installation ...