1. With raw material of ductile iron (65-45-12), couplings have excellent performances of machinery, sealing, anti-corrosion as well as ductibility ;
2. it is used to make pipe-joint connected, fastened and sealed, of which dimensions are of many kinds and inside of which can be with silicon ring or EPDM ring to improve its sealing. Also it can be developed and designed for any specifications to meet your needs.
3. it is usually used in the field of fire-fighting, water-supply, mining, petroleum and other industrial application. Besides its appearance can be dealt with epoxy powder, hot-dipped zinc, spray paint, dipping paint, dacromet or any your requirements.