QingDao NPA Industry Co.,Ltd
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    • Summary:

      Sand casting: 1 production lines-automatic recovery of molding sand.
      CAE software is used to design the casting process and trial production.
      With 30 years of manufacturing experience, NPA could design relevant sandbox to ensure the molten steel to be cooled sequentially to avoid overheating defects.
      Precision castings: 1 production line
      CAE software is used to design the casting process and trial production

    • Summary:

      Manufacturing capacity: 3500 Tons/year.
      Static casting parts used in petrochemical industry: 90°elbow, 180°elbow, Tee, hand type fitting, special-shaped elbow, hanger, reducer, collectors, etc. NPA can manufacture up to 500 kg static casting tubes for cracking reformer furnace.

    • Summary:

      NPA medium frequency induction furnaces are environmental friendly designed. It consists of IGBT controlled power unit, PLC preprogrammed melting process, liquid steel temperature control, gas protection system and energy consumption record, etc.
      Raw material preparation is done in separate section and baked before melting to remove the moisture, avoid unnecessary oxygen and hydrogen.

    • Summary:

      Centrifugal casting specification:
      Furnace tube:OD50mm-OD200mm, wall thickness:5mm-20mm
      Reformer tube:OD100mm-OD300mm, wall thickness:8mm-20mm
      Inlet Manifold: OD100mm-OD400mm ,wall thickness 10mm-40mm;
      Equipments:
      10 IGBT Medium frequency induction melting furnaces
      1 arc Furnace
      8 centrifugal casting machines

    • Summary:

      The reformer tube used on hydrocarbon steam reforming furnace is widely used in oil refinery, chemical plant and metallurgy industry such as DRI plant.
      The petrochemical industry has a big demand for hydrogen. Over 90% of global refineries and chemical plants produce hydrogen by hydrocarbon steam reforming process.
      Hydrocarbon steam reforming furnace includes: inlet manifold, reformer tubes, outlet manifold and up/down pigtail tubes. Reformer tube is produced by centrifugal casting.The working

    • Summary:

      Reformer furnace includes: inlet manifold, reformer tubes, outlet manifold and up/down pigtail tubes.
      Manufacturing standards:
      1. The design requirements of the customer and engineering company.
      2. Centrifugal casting: HG/T 2601, ASTM A608, DIN 10295,JIS G5122, etc.
      3. Static casting: HG/T 3673, ASTM A351, etc.
      4. Forgings: To drawing and design
      5. Standard for rolled pipe: To drawing and design

    • Summary:

      Manufacturing capacity:500 reformer tubes per month
      Manufacturing process:Centrifugal casting, Static casting and precision casting
      Specification:
      Reformer tube: OD100mm-OD300mm, wall thickness:8mm-20mm
      Inlet manifold: OD100mm-OD400mm,wall thickness 10mm-40mm;
      Static casting: Reducer for reformer tube and manifold, hanger
      Rolled and welding tube/pipe: machined by outsourced tube/pipe
      Outlet manifold:OD300mm-OD1200mm,wall thickness 10mm-30mm;( including refractory )

    • Summary:

      Tubularcracking furnace is the main way to produce ethylene in China. Ethylene cracking furnace mainly includes: heating system, heat recovery system, reaction system.
      The furnace includes: burner, radiant section, convection section and quench system, and high pressure steam system. The cracking furnace tube is used in the radiation section, also known as the radiant section furnace tube. The working temperature is 1000-1150℃. It is an important equipment of ethylene cracking furnace.

    • Summary:

      The main parts of the radiant section of ethylene cracking furnace include centrifugal casting tube, centrifugal casting bent tube, static casting tube, forgings and rolled pipe etc.
      Manufacturing standards:
      1. The design requirements of the customer and engineering company.
      2.Centrifugal casting: HG/T 2601, A608 DIN, ASTM 10295, G5122 JIS...
      3.Static casting: HG/T 3673, A351 ASTM...
      4.Forging: according to the engineering requirement

    • Summary:

      We can produce furnace tubes for a 1-million-ton ethylene cracking furnace per month.
      Manufacturing process: centrifugal casting, sand casting, precision casting. Specification: Furnace tube: O.D.:50MM-200MM, wall thickness: 5mm-20mm; Manifold: O.D.:100mm-400mm, wall thickness:10mm-40mm; Centrifugal casting bent tube: to drawings. Static casting:90°elbow, 180°elbow, Tee, hand type tube, special-shaped three-dimensional elbow, hanger etc..

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