Customized Cases
Case 1: Acid-resistant Flange for Chemical Pipeline
Requirement: DN200 PN16 flange, with the medium being 98% sulfuric acid and the temperature being 80℃.
Solution:
Material: Hastelloy C276
Sealing Surface: RTJ + Flexible Graphite Gasket
Lining: PTFE Coating (acid corrosion prevention)
Case 2: Food-grade Quick-release Flange
Requirement: DN150 sanitary flange, compatible with CIP cleaning.
Solution:
Material: 316L electrolytic polishing (Ra≤0.4μm)
Structure: Tri-Clamp connection
Certification: FDA 21 CFR 177.2600
Case 3: High-pressure Steam Flange
Requirement: DN300 PN40 flange, for 400℃ saturated steam.
Solution:
Material: A182 F22 (2.25Cr - 1Mo)
Heat Treatment: Normalizing + Tempering (HB 140 - 200)
Inspection: 100% RT Radiographic Inspection
Non-standard Customization Process
Requirement Confirmation: Pressure, medium, temperature, installation environment
Design and Drawing: Provide a sketch or 3D model (design can be provided on behalf)
Material Procurement: Select plates/forgings as needed
Processing and Manufacturing: Turning + Drilling + Heat Treatment (if necessary)
Inspection and Delivery: Material report + Inspection certificate
Advantages of Customized Service
Precise Matching: Solve the problem of incompatibility between standard flanges and working conditions.
Cost Reduction and Efficiency Increase: Avoid additional costs incurred due to pipeline modification.
Long-term Reliability: Targeted design extends the flange life. 
Customized Cases
