... ,GB size diameter:40-6000mm Rubber flexible joints, also known as rubber expansion joints, are flexible pipe connectors made from natural or synthetic ... ,NB,NBR,SBR,EPDM,Nylon Cord Fabric ,etcName: flexible/expansion rubber joints/ pipe joint, pipe connectorFlange: galvanised iron, cast iron,Q235 ... . Compressed air,water,sea water,hot water,weak acid,etc. rubber joint sphere