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ASME EN JISB 05B DN150 PN10-100 Stainless Steel Plate Flange
Production Standard：ASME B16.5, ASME B16.47, EN 1092-1 Type 01, DIN 2573~2576, ISO 7005-1, JIS B2220, GOST 12820-80, API 6A, AS/NZS 4087, GB/T 9124.1-2019.
The sealing surface of threaded flanges determines the sealing effect! Flat face (FF) sealing surface is easy to process, only needing milling to be flat, suitable for low-pressure, non-viscous media (such as clean water); raised face (RF) sealing surface needs to be turned with a raised platform, used with gaskets (e.g., rubber gaskets, asbestos gaskets), suitable for medium-low pressure oil and gas pipelines; after processing, the sealing surface roughness must be ≤Ra3.2μm to avoid medium leakage.Key Process：Sealing surface flatness detection with a laser measuring instrument.
The sealing surface of threaded flanges determines the sealing effect! Flat face (FF) sealing surface is easy to process, only needing milling to be flat, suitable for low-pressure, non-viscous media (such as clean water); raised face (RF) sealing surface needs to be turned with a raised platform, used with gaskets (e.g., rubber gaskets, asbestos gaskets), suitable for medium-low pressure oil and gas pipelines; after processing, the sealing surface roughness must be ≤Ra3.2μm to avoid medium leakage.Key Process：Sealing surface flatness detection with a laser measuring instrument.
