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GB/T14291 Q235A Q295B Q345A Welded Steel Pipes For Ore Pulp Transportation

Categories Welded Steel Tube
Brand Name: TORICH
Model Number: GB/T14291
Certification: ISO9001:2008,ISO14001:2008,TS16949,CE PED,TUV,APIABS,BV,Lloyd's,CCS,DNV,CCS,KR,RINA,SON,GL
Place of Origin: CHINA
MOQ: 5 TON
Price: 600-1200 USD/T
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 20000 T/Year
Delivery Time: 35days
Packaging Details: packing in wooden boxes or in hexagonal bundles
Name: GB/T14291 Q235A Q295B Q345A Welded Steel Pipes for ore pulp transportation
Grade Group: Q195-Q345
Surface: normalized
Material: Q215/Q295/Q235/Q345 A/B
Shape: Round Shape
Technique: EFW
WT: 0.5-50mm
OD: 5-600mm
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    GB/T14291 Q235A Q295B Q345A Welded Steel Pipes For Ore Pulp Transportation

    Product Name:TORICH GB/T14291 Q235A Q295B Q345A Welded Steel Pipes for ore pulp transportation

    Standard: GB/T14291

    OD: 5-600mm

    WT: 0.5-50mm

    Length: 1-12mm or according to customers' actual application and production.

    Application:for ore pulp transportation

    Steel Grade:Q235A Q235B Q295A Q345B Q295B Q345A

    Technology:High frequency straight seam welding(HFW)

    Characteristic:

    Good concentricity

    Good surface quality

    Good OD and ID tolerance

    High Precision

    Stable quality

    Smooth Roughness

    TORICH QUALITY ASSURANCE


    QUALITY CONTROL

    1~ Incoming Raw Material Inspection
    2~ Raw Material Segregation to avoid steel grade mix-up
    3~ Heating and Hammering End for Cold Drawing
    4~ Cold Drawing and Cold Rolling, on line inspection
    5~ Heat Treatment, +A, +SRA, +LC, +N, Q+T
    6~ Straightening-Cutting to specified length-Finished Measuring Inspection
    7~ Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
    8~ Packing and Stocking.


    100% of our steel tubes are dimensionally checked
    100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
    100% eddy current te
    st and ultrosonic test to eliminate longitudinal and transversal defects.


    Table 1 Outer Diameter,Wall Thicknes,Theoretical Weight and Test Pressure

    Norminal Outer Diameter(D)/mmNorminal Wall Thickness(S)/mmTheoretical Weight/(kg/m)Test Pressure/MPa
    Q235A,Q235BQ295A,Q295BQ345A,Q345B
    21.32.51.16151515
    21.331.35151515
    21.33.51.54151515
    252.51.39151515
    2531.63151515
    253.51.86151515
    2542.07151515
    26.92.51.50151515
    26.931.77151515
    26.93.52.02151515
    26.942.26151515
    31.82.51.81151515
    31.832.13151515
    31.83.52.44151515
    31.842.74151515
    33.72.51.92151515
    33.732.27151515
    33.73.52.61151515
    33.742.93151515
    382.52.19151515
    3832.59151515
    383.52.98151515
    3843.35151515
    402.52.31151515
    4032.74151515
    403.53.15151515
    4043.55151515
    42.42.52.46151515
    42.432.91151515
    42.43.53.36151515
    42.443.79151515
    48.32.52.8214.61515
    48.333.35151515
    48.33.53.87151515
    48.344.37151515
    512.52.9913.81515

    TABLE 2 Allowable deviation of outer diameter and wall thickness

    Unit: millimeter

    Nominal outside diameter DAllowable deviation of outer diameterPermissible deviation of wall thickness
    D≤48.3±0.50±10%S
    48.3<D≤273±1%D
    D>273±0.75%D

    TABLE 3 Mechanical Property

    Grade

    Tensile strength

    N/m

    Lower yield strength /

    N/m

    Elongation A%

    Not less than

    D≤168.3D>168.3
    Q235A,Q235B3752351520
    Q295A,Q295B3902951318
    Q345A,Q345B4703451318
    Note : Tensile test arbitration time is based on longitudinal sample.

    TABLE 4 Inspection items, test methods and sampling number of steel pipes

    NOInspection projectSampling method and test methodSampling quantity
    1chemical compositionGB/T 20066,GB/T 223,GB/T 4336One each furnace(canister)
    2Tensile testGB/T 228,GB/T 2975One each batch
    3Tensile testGB/T 241One by one
    4Ultrasonic examinationGB/T18256One by one
    5Eddy current flaw detectionGB/T 7735One by one
    6Bending testGB/T 244Two per batch
    7Flattening testGB/T 246Four each roll

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