We are manufacturer of universal coupling,flange adaptor over 5years. Certificate: BV,ISO,WRAS Size: 2-12" ... Material:DCI MANUFACTURER,ISO9001 CERTIFIED.Universal Couplings& Flange Adaptor: Materials: Body: Ductile Iron Gland: Ductile Iron Gasket: EPDM/ ... Fusion Bonded Epoxy Ral 5017 Bolts Cap: NBR Application: Universal for Ductile iron pipe, cast iron pipe, steel pipe, Asbston cement ...