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Nickel Machined Parts

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Nickel flange with neck flat welding

  • Material: N200 Industrial Pure Nickel (N6, UNS N02200)
  • Execution standards: GB/T 2054, HG/T20592, ASTM B160
  • Specification: DN15-DN500, pressure PN6/10/16; RF, MFM, TG multiple sealing surfaces
  • Supply status: Vacuum annealed acid washed, sealing surface finely machined and leveled
  • Product Description:The neck flat welding nickel flange is made of N200 (N6) pure nickel forgings and machined as a whole. The low tapered neck is matched with a flat welding groove, and the flange rigidity is better tha
[ Material Performance ]
1. Mechanical properties: Nickel material has good plasticity, the tapered neck enhances the flange support strength, resists slight vibrations, and is not easily deformed under long-term pressure;
2. Corrosion resistance: Resistant to concentrated alkali, molten alkali, and hydrofluoric acid media, preventing galvanic corrosion caused by contact between dissimilar metals;
3. Physical and chemical properties: stable conductivity and thermal conductivity, high temperature oxidation resistance, low gas release in vacuum environment;
4. Advantages of use: Simple flat welding construction, complete set of nickel pipe fittings, suitable for pressure stable room temperature strong alkali pipelines.


[ Process Structure ]

1. Integrated forging and molding, seamless combination of flange and cone neck, without delamination or leakage defects;
2. Low tapered transition neck, disperses pipeline stress, evenly distributes force, and has a higher load-bearing capacity than plate welding flanges;
3. Standard plug-in flat welding groove, with good fusion effect with nickel pipe welding, and the corrosion resistance of the weld seam is consistent with the base material;
4. Vacuum annealing eliminates processing stress, and the finished products are inspected piece by piece, ensuring that the sealing surface meets the standard for flatness.


[ Application Fields ]

1. Chlor alkali chemical industry: connection flanges for caustic soda storage tanks and low-pressure circulation pipelines;
2. Fluorine chemical industry: small reaction equipment for hydrofluoric acid, supporting connectors for auxiliary equipment;
3. New energy metallurgy: supporting flange for electrolyte low-pressure circulation nickel heat exchanger;
4. Electronic vacuum equipment: high-purity fluoride and alkaline gas delivery pipeline accessories;
5. Laboratory equipment: small strong alkali corrosion-resistant fluid equipment flange.