China High Pressure Flange B16.5 1500# WN RTJ B16.5 1500LB WN RTJ SCH:S10,S20,S30,S40,S60,S80,S100,S120,S140,S160,XS ,XXS In flange design, sealing design is an important part, because the sealing failure of pressure vessels, often is not the strength of the connector is not enough, and more cases are caused by bad sealing leakage, in order to make the normal operation of chemical equipment,...