China GB 3087 standard seamless boiler alloy steel pipe Low pressure Medium pressure Manufacturer and Supplier | Gold Sanon
  • leathanach-banner2
  • leathanach-bannner

GB 3087 standard seamless boiler alloy steel pipe Low pressure Medium pressure

Cur síos achomair:

GB T3087-2008

brú íseal Meánach píopa brú choire Super téite píopa gaile ardchaighdeán píopa cruach gan uaim carbóin

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.
  • Sonraigh Táirge

    CC

    Táirge Clibeanna

    Forbhreathnú

    Caighdeán: GB / T3087-2008

    Grád Group: 10 #, 20 #

    Tiús: 1 - 100 mm

    Seachtrach trastomhas (Babhta): 10-1000 mm

    Fad: Seasta fad nó fad randamach

    Rannóg Cruth: Babhta

    Cuir Origin: An tSín

    Deimhniúchán: ISO9001: 2008

     

    Alloy nó nach: déanta as cruach carbóin gan uaim

    Feidhmchlár: Coire Pipe

    Dromchla Cóireála: Mar riachtanas an chustaiméara

    Teicníocht: Te Iarchurtha / fuar tharraingt

    Teas chóireáil: Normalú

    Pipe Speisialta: Tiubh Wall Pipe

    Úsáid: Tógáil, Sreabhán Iompar, Coire agus malartóir teasa

    Tástáil: ET / UT

    Iarratais

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

    príomh Grád

    Grád na cruach struchtúracha carbóin ard-chaighdeán: 10 #, 20 #

     

    Comhpháirt Chemical

    Caighdeán Grád Comhdhéanamh Cheimiceach (%)
    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

    Maoin Meicniúil

    Caighdeán Cruach píopa tiús bhalla Neart teanntachta Neart Toradh fadú
    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 tiús bhalla Permissible deviation
    Cold drawn (rolled) steel tube ≤ 3 15 - 10 % S or ± 0.15, take the greater number
    > 3 + 12.5% S
    - 10% S

    tástáil Riachtanas

    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.

     

    Sonraigh Táirge


  • Roimhe Seo:
  • Ar Aghaidh:

  • Scríobh do theachtaireacht anseo agus seol chugainn é