... Brand Name: S1 Raw material: steel Type: Radiator Size: 1" Radiator Nipple,Radiator connecter,radiator fitting Raw Material : Seamless steel tube, Standards ... :International standard teethRadiator Nipple,Radiator connecter,radiator fitting1.Raw Material: Seamless steel tube2.International standard ISO228 ... . Dehao offer you the best future. Heating Radiator fittings