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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DIN2391 ST37.4, ST52.4 bright annealed and bright normalized seamless cold drawn steel tube

DIN2391 ST37.4, ST52.4 bright annealed and bright normalized seamless cold drawn steel tube

    • DIN2391 ST37.4, ST52.4 bright annealed and bright normalized seamless cold drawn steel tube
    • DIN2391 ST37.4, ST52.4 bright annealed and bright normalized seamless cold drawn steel tube
    • DIN2391 ST37.4, ST52.4 bright annealed and bright normalized seamless cold drawn steel tube
    • DIN2391 ST37.4, ST52.4 bright annealed and bright normalized seamless cold drawn steel tube
  • DIN2391 ST37.4, ST52.4 bright annealed and bright normalized seamless cold drawn steel tube

    Product Details:

    Place of Origin: China
    Brand Name: YAXIN
    Certification: ISO/TS16949, ISO9001, OHSAS18001

    Payment & Shipping Terms:

    Minimum Order Quantity: 1000kg
    Price: 1000 us dollars per metric ton
    Packaging Details: Waterproof material wrapped, wooden case packing
    Delivery Time: 30 days
    Payment Terms: L/C, T/T
    Supply Ability: 500 metric tons per month
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    Detailed Product Description
    Material: ST37.4, ST52.4 Surface: Oiled, Black Phosphated, Zinc Coated
    Shape: Round Application: Automotive, Hydraulic Line Tubing, Machinery
    Delivery Condition: +C, +LC, +SR, +N, +A

    DIN2391 ST37.4, ST52.4 bright annealed and bright normalized seamless cold drawn steel tube

     

    Process:

    Cold drawn, seamless tube

     

    Steel grades:

    ST37.4 (E235N)

    ST52.4 (E355N)

     

    Dimensional range:

    Outside diameter: 4-30mm

    Wall thickness: 0.5-10mm

    Length: standard 6000mm or on request

     

    - If one of the limit deviations for the diameter is to be zero, the limit deviation for the wall thickness shall be equal to 10% of the mean wall thickness calculated using the formula given in clause 2 of DIN2391 Part 1.

     

    Delivery condition:

    BK, BKW, BKS, GBK, NBK

     

    Appearance:

    - Tubes have a smooth internal and external surface

    - Surface imperfections such as scabs or gouges resulting from the manufacturing process, are not permitted provided the inner and outer diameters. Laps and laminations are also not permitted.

     

    Test and inspection:

    - Eddy current test

    - Ultrasonic test

    - Hardness

    - Flattening, as specified in DIN EN 10233

    - Flaring

    - Bending

    - Chemical composition analysis

    - Mechanical properties (tensile, yield, elongation), as specified in DIN EN 10002 Part 1

    - Metallographic analysis

     

    In compliance with commercial practice, the tubes shall be supplied with provisional corrosion protection:

    - Coated oil

    - Black phosphated

    - Zinc coated

     

    Straightness:

    - Tubes with an outside diameter exceeding 15mm shall not deviate from straightness by more than 0.25% oft he total length

    - Tubes with a yield strength greater than 500N/mm2 shall be deviate from straightness by more than 0.3% of the total length

    - Localized deviations shall not exceed 3mm/m and shall be measured as the distance between the tube surface and a chord linking two random points 1000mm apart

     

    Packing:

    Wooden case

     

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

    Contact Person: Yaxin

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