types of pump coupling 1.Material:rubber,iron,steel 2.DN25mm~DN3000mm 3.12 years OEM producing experience 4.ISO9001,ISO14001 types of pump coupling,grooved fitting,types of pipe joints 1:Basic introduction: NameCoupling, elbow, tee, cross, reducer, cap, mechanical tee, mechanical cross, flange adaptorStandardANSI, ASTM, DIN, JIS, GB, BS, etc.TypeManufacturerSize1/2"-12",DN15-DN500MaterialDuctile ...