Brand: SdS Standard: ISO2531/EN545 Material: Ductile Iron/Gray Iron/Carton steel/Stainless steel Standard: ISO2531/EN545 Nominal Diameter: DN30mm- DN1600mmPaint:Epoxy CoatingProducts kinds: pipe expansion joints, rubber joint, flexible joint hose, cast iron pipe fitting, dismantling joint, flange adaptor, and coupling etc.