Sign In | Join Free | My brakesband.com
brakesband.com
Products
Search by Category
Home > Titanium >

Steel Grade 25 Structural Steel Tubing Hot Rolled / Cold Drawn 16mm - 30mm

Categories Structural Steel Pipe
Brand Name: Torich
Model Number: GB/T 8162
Certification: CE PED
Place of Origin: China
MOQ: 1000kg
Price: 600-1000 USD per ton
Payment Terms: L/C, T/T
Supply Ability: 50000tons per year
Delivery Time: 3-4 weeks
Packaging Details: In bundles with seaworthy packing
Heat Treatment: Hot Rolling & Cold Drawn
Material: 20 45 Q345 20Cr 40Cr 20CrMo 30-35CrMo 42CrM
test: bending test/ hardness test/ impact test and so on
  • Haven't found right suppliers
  • Our buyer assistants can help you find the most suitable, 100% reliable suppliers from China.
  • And this service is free of charge.
  • we have buyer assistants who speak English, French, Spanish......and we are ready to help you anytime!
  • Submit Buying Request
    • Product Details
    • Company Profile

    Steel Grade 25 Structural Steel Tubing Hot Rolled / Cold Drawn 16mm - 30mm

    GB/T8162 Structural Seamless Steel Tube with Steel Grade 20 45 Q345 20Cr 40Cr 20CrMo 30-35CrMo 42CrM


    Heat Treatment: Hot Rolling & Cold Drawn


    Tolerance of the OD &WT:

    OD Tolerance:

    Production MethodOD Tolerance
    Hot Rolling(Extrusion)±1% or ±0.50mm
    Cold Drawn(Cold Rolled)±1% or ±0.30mm

    Tolerance for wall thickness:


    1.Wall thickness tolerance of Hot Rolling steel tube:

    Production MethodOD (DN)WT/ODTolerance
    Extruded tube≤102/±12.5% or ±0.40mm
    >102≤0.05±15% or ±0.40mm
    >0.05-0.10±12.5% or ±0.40mm
    >0.10

    +12.5%

    -10%

    Heat expanding steel tube/±15%

    2.Wall thickness tolerance of Cold Drawn(Cold Rolled) steel tube:

    Production MethodWTTolerance
    Cold Drawn(Cold Rolled) steel tube≤3+15%/-10% or ±0.40mm
    >3

    +12.5%

    -10%


    Bending tolerance:

    WT≤15mm, Bending≤1.5mm/m

    WT>15mm~30mm, Bending≤2.0mm/m

    WT>30mm/OD≥351mm, Bending≤3.0mm/m


    Ovality and Wall unevenness:

    The ovality and wall unevenness should be no more than 80% of the OD and wall thickness.(Or according to customer’s request)


    mechanical property

    Steel Grade

    Tensile strength

    Rm

    N/mm2(MPa)

    Yield Strength

    Rp0.2

    N/mm2(MPa)

    Elongation

    A %

    Wall Thickness
    ≤16mm>16~30mm>30mm
    10≥335≥205≥195≥185≥24
    15≥375≥225≥215≥205≥22
    20≥410≥245≥235≥225≥20
    25≥450≥275≥265≥255≥18
    35≥510≥305≥295≥285≥17
    45≥590≥335≥325≥315≥14
    20Mn≥450≥275≥265≥255≥20
    25Mn≥490≥295≥285≥275≥18
    Q235A375~500≥235≥225≥215≥25
    B
    C
    D
    Q275A415~540≥275≥265≥255≥22
    B
    C
    D
    Q295A390~570≥295≥275≥255≥22
    B
    Q345A470~630≥345≥325≥295≥20
    B
    C≥21
    D
    E
    Q390A490~650≥390≥370≥350≥18
    B
    C≥19
    D
    E
    Q420A520~680≥420≥400≥380≥18
    B
    C≥19
    D
    E
    Q460C550~720≥460≥440≥420≥17
    D
    E

    Test:

    1. Bending test
    2. Hardness test
    3. Impact test
    4. Squeezing test
    5. Non-destructive test


    Reference Standard:

    GB/T 222 Tolerance of chemical composition for the steel products.


    GB/T 223.3 Chemical analysis method for steel and alloy steel. Two antipyrine methane phosphomolybdate gravimetric method for the determination of phosphorus content.


    GB/T 223.5 Chemical analysis method for steel and alloy steel. Reduced silicon molybdate spectrophotometric determination of acid-soluble Silicon Content.


    GB/T 223.8 Chemical analysis method for steel and alloy steel. Determination of aluminum content of sodium chloride separated -EDTA volumetric method.


    GB/T 223.9 Determination of aluminum content for steel and alloy steel. Chromium Azure S Spectrophotometry.


    GB/T 223.11 Chemical analysis method for steel and alloy steel. Determination of chromium content ammonium persulfate oxidation volumetric method.


    GB/T 223.12 Chemical analysis method for steel and alloy steel. Spectrophotometric determination of chromium content diphenyl hydrazine - separation of sodium carbonate.


    GB/T 223.13 Chemical analysis method for steel and alloy steel. Determination of vanadium content ammonium ferrous sulfate titration.


    GB/T 223.14 Chemical analysis method for steel and alloy steel. Tantalum extraction reagent spectrophotometric determination of vanadium content.


    GB/T 223.16 Chemical analysis method for steel and alloy steel. Spectrophotometric determination of titanium content chromotropic acid.


    GB/T 223.18 Chemical analysis method for steel and alloy steel. Sodium thiosulfate and Separation - iodometry determination of copper content.


    GB/T 228 Metallic materials at room temperature tensile test method (GB/T 228-2002,eqv ISO 6892:1998)


    GB/T 229 Metal Charpy pendulum impact test method ( GB/T 229-2007, ISO 148-1:2006, MOD)


    GB/T 231.1 Brinell hardness test Part 1: testing method (GB/T 231.1-2002, ISO 6506-1:1999, EQV)


    GB/T 244 Metal pipe bending test method (GB/T 244-2008, ISO 8491:1996, IDT)


    GB/T 246 Test methods for flattening the metal tube (GB/T 246-2007, ISO 8492:1998, IDT)


    GB/T 699 Structural carbon steel in good quality.


    GB/T 1591 High strength low alloy structural steel


    GB/T 1591 High strength low alloy structural steel

    Buy Steel Grade 25 Structural Steel Tubing Hot Rolled / Cold Drawn 16mm - 30mm at wholesale prices
    Send your message to this supplier
     
    *From:
    *To: TORICH INTERNATIONAL LIMITED
    *Subject:
    *Message:
    Characters Remaining: (0/3000)
     
    Inquiry Cart 0