ODM Manufacturer China Cold Drawn Seamless Carbon Steel Tube St52

Short Description:

GB T3087-2008

low pressure Medium pressure boiler pipe super heated steam pipe high quality seamless carbon steel pipe

Mainly for India market with IBR certification

 


  • Payment: 30% deposit, 70% L/C or B/L copy or 100% L/C at sight
  • Min.Order Quantity: 1 PC
  • Supply Ability: Annual 20000 Tons Inventory of Steel Pipe
  • Lead Time: 7-14 days if in stock, 30-45 days to produce
  • Packing: Black Vanishing, bevel and cap for every single pipe; OD below 219mm need to pack in bundle, and each bundle no exceed 2 tons.
  • Product Detail

    Product Tags

    We depend on sturdy technical force and continually create sophisticated technologies to meet the demand of ODM Manufacturer China Cold Drawn Seamless Carbon Steel Tube St52, We sincerely welcome overseas prospects to refer to with the long-term cooperation and also the mutual enhancement.We strongly believe that we can do better and greater.
    We depend on sturdy technical force and continually create sophisticated technologies to meet the demand of China Seamless Steel Tube St52, St52 Seamless Steel Tube, We’ve more than 200 staff including experienced managers, creative designers, sophisticated engineers and skilled workers. Through hard work of all employees for the past 20 years own company grew stronger and stronger. We always apply the “client first” principle. We also always fulfill all contracts to the point and therefore enjoy excellent reputation and trust among our customers. You are very welcome to personally visit our company.We hope to start a business partnership on the basis of mutual benefit and successful development . For more information remember to do no hesitate to contact us..

    Overview

    Application

    It is mainly used to make high-quality carbon structural steel, low pressure medium pressure boiler pipe, super heated steam seamless carbon steel pipe

    Main Grade

    Grade of high-quality carbon structural steel: 10#,20#

     

    Chemical Component

    Standard Grade Chemical Composition(%)
        C Si Mn P S Cr Cu Ni
    GB3087 10 0.07~0.13 0.17~0.37 0.38~0.65 ≤0.030 ≤0.030 0.3~0.65 ≤0.25 ≤0.30
      20 0.17~0.23 0.17~0.37 0.38~0.65 ≤0.030 ≤0.030 0.3~0.65 ≤0.25 ≤0.30

    Mechanical Property

    Standard Steel pipe Wall thickness Tensile strength Yield Strength Elongation
    GB3087   (mm) (MPa) (MPa) %
         
    10 / 335~475 195 24
    20 <15 410~550 245 20
    ≥15 225

    Tolerance

    Permissible deviation of outer diameter of steel tubes

    Type of steel tube  Permissible deviation
    Hot rolled (extruded, expanded) steel tube       ± 1.0% D or ± 0.50, take the greater number      
    Cold drawn (rolled) steel tube ± 1.0% D or ± 0.30, take the greater number      

    Permissible deviation of the wall thickness of hot rolled (extrusion, expansion) steel tubes

    Unit: mm

    Type of steel tube Outer diameter of steel tube     S / D  Permissible deviation
    hot rolled (extruded) steel tube ≤ 102  – ± 12.5 % S or ± 0.40, take the greater number      
    > 102 ≤ 0.05 ± 15% S or ± 0.40, take the greater number      
    > 0.05 ~ 0.10  ± 12.5% S or ± 0.40, take the greater number      
    > 0.10 + 12.5% S
    - 10% S
    hot expand steel tube + 15% S

    Permissible deviation of the wall thickness of cold drawn (rolled) steel tubes

    Unit: mm

    Type of steel tube Wall thickness Permissible deviation
    Cold drawn (rolled) steel tube ≤ 3 15 – 10 % S or ± 0.15, take the greater number      
    > 3 + 12.5% S
    - 10% S

    Test Requirement

    Flattening test

    Steel tubes with an outer diameter greater than 22 mm and up to 400 mm, and wall thickness greater than 10 mm should undergo the flattening test. After the samples are flattened

    Bending test

    Steel tubes with an outer diameter not greater than 22 mm should undergo the bending test. The bending angle is 90o . The bending radius is 6 times the outer diameter of the steel tube.After bending the sample, no fissures or cracks are permitted to appear on the sample.

    Macroscopic examination

    For steel tubes directly made by continuously cast billets or steel ingots, the supplying party should guarantee that there are no white spots, impurities, sub-surface air bubbles, skull patches or layering on the cross-sectional acid pickled macroscopic tissue of the billet or steel tube.

    Non-destructive inspection

    According to the demanding party’s request, which is then negotiated between the supplying and demanding parties and indicated in the agreement, ultrasonic flaw detection may be individually performed for steel tubes. The longitudinal manual defect of the reference sample tube should meet the requirements for post-inspection acceptance grade C8 specified in GB/T 5777-1996.

     

    Product Detail

    High Pressure Boiler Tube


    GB/T5310-2017


    ASME SA-106/SA-106M-2015


    ASTMA210(A210M)-2012


    ASME SA-213/SA-213M


    ASTM A335/A335M-2018


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