Zhangjiagang Bonded Area Yaxin Precision Tube Co., Ltd. 

Zhangjiagang Bonded Area Henglong Steel Tube Co., Ltd.

Steel Tubing for Automotive Powertrain, Shock Aborber, Steering 

And Steel Tubing for Heat Exchanger, Superheater, Reheater, Boiler, Mechanical

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ASME SA213 Standard Twisted Stainless Steel Tubes For Heat Exchanger ISO 9001

ASME SA213 Standard Twisted Stainless Steel Tubes For Heat Exchanger ISO 9001

    • ASME SA213 Standard Twisted Stainless Steel Tubes For Heat Exchanger ISO 9001
    • ASME SA213 Standard Twisted Stainless Steel Tubes For Heat Exchanger ISO 9001
  • ASME SA213 Standard Twisted Stainless Steel Tubes For Heat Exchanger ISO 9001

    Product Details:

    Place of Origin: China
    Brand Name: HENGLONG
    Certification: ISO9001, ISO19001, OHSAS18001

    Payment & Shipping Terms:

    Minimum Order Quantity: 500kg
    Price: 500 US Dollars
    Packaging Details: Bundled in wooden case, waterproof material wrapping
    Delivery Time: 20 days
    Payment Terms: L/C, D/A, D/P, T/T
    Supply Ability: 1000 metric tons per month
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    Detailed Product Description
    Material: Austenitic Stainless Steel 316L Shape: Twisted, Ovel Tube
    Standard: ASME SA213

    The Henglong design avoids the need for baffles altogether. The helix-shaped tubes are assembled into a bundle on a triangular pitch, one row at a time, with each tube being turned to align the twists at every plane along the bundle length (Figure 4). In that way, each tube is firmly and repeatedly supported by adjacent tubes, which helps eliminate tube vibration. The completed bundle is then tightly strapped circumferentially to ensure no tube movement, resulting in a strong and robust module. The twist arrangement with gaps aligned between the tubes also provides clear washing lanes on the shell side, making high-pressure water lancing an effective cleaning method.

     

    The company says the twisted-tube design provides a higher heat transfer coefficient than any other type of tubular heat exchanger for three reasons: The complex swirl flow on the shell side induces turbulence; the twisted tubes force a powerful tube-side turbulence; and uniform flow distribution extends the effective length of the bundle, providing more surface area than conventional shell-and-tube heat exchangers. According to some estimates, heat transfer coefficients with the twisted-tube design are 40% higher than those found in a conventional shell-and-tube heat exchanger with a similar pressure reduction.

    The twisted-tube design is being used in the power industry for turbine steam condensing, boiler feedwater heating, and lube oil cooling, as well as other applications.

     

    Tube material:

    Low carbon steels: SAE1010, SAE1020

    Stainless steels: 304, 304L, 321, 316, 316L

    Duplex stainless steels: S31803, S32205

    Nickels: 200, 201

    Titanium: Gr.1, Gr.2, Gr.3

    Copper nickels: C70600 (CuNi 90/10), C71500 (CuNi 70/30)

    Other metals are available on request

     

     

     

    Tube specification:

     ASME SA213 Standard Twisted Stainless Steel Tubes For Heat Exchanger ISO 9001

     

    OD (mm) Lead St (mm) Long axis a (mm) Short axis b (mm) Bare end length L1 (mm)
    19 200 23.0 13.0 As per customer
    25 200 30.5 15.5 As per customer
    32 200 37.0 22.5 As per customer

    Other sizes are available on request

    Metric or Imperial system measurement is available on request

     

     

     

    Contact Details
    Zhangjiagang Bonded Area Henglong Steel Tube Co., Ltd.

    Contact Person: Yaxin

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