... is used for pipe connection characterized of simple installation and reliable performance.Under low pressure,the sealing is achieve ... of fire protection,mines,power,chemical industry and urban water supply and discharge.When it is connected with valves ... ,16Mn3Seal ring1NBR,EPDN4BoltNQ235A,35,1Cr18Ni9Ti5NutNQ235A,20,1Cr18Ni9Ti C:Package and delivery1General package is wooden box,but we also can accept ...