Jiangsu Ad Design Metal Bellows Used for Safety Relief Valve Jiangsu Aidi Co., Ltd. Base Info Model NO.:DN22Standard:GBMaterial:Stainless SteelSurface Treatment:Without TreatmentTrademark:ADTransport Package:CartonOrigin:Nanjing City Jiangsu Province China Description Pre:Jiangsu Ad Supplies Metal Bellows Used for Safety Overflow Valves Next:Pneumatic 15 Type Copper Swivels Push-in Quick Connector Fittings