Pressure grade: 0.25MPa~32MPa Port size: DN10~3000 (3/8" ~ 120") Widely used. Neck Flat Weld Flange Model: WB PH-38 Feature:1. Sealing face type: FF, RF, MFM, TG, RJ2. It is used to connect lines to keep the good sealing of pipeline.3. Covenient to change pipeline.4. Convenient to check the pipeline.5. Easy to close pipeline.Technology paramete: Material of flangeCarbon steelASTM A105,20#,Q235, ...