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BS6323-6 Cold Finished Electric Resistance Welded Steel Tubes with BK , BKW , GBK , GZF , NBK , NZF

Categories Welded Steel Tube
Brand Name: TORICH
Model Number: BS6323-6
Certification: ISO 9001 ISO 14001 EN 10204.3.1 TS 16949 TUV
Place of Origin: China
MOQ: 5 tons
Price: USD 600-1200 ton
Supply Ability: 60000 tons per year
Delivery Time: 5-8 weeks
Packaging Details: oil antirust In hexagonal bundles
Material: Carbon steel
Steel grade: CEW1a CEW2a CEW3a CEW4a CEW5a
Standard: BS6323-6
Shape: Round
Dimension: OD6-350mm *WT1-35mm *Lmax12000mm
Applications: For Auto industry / for machinery use/mechanical and general engineering purposes
Production method: Seamless and welded
Characteristic: Cold Finished Electric Resistance Welded
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    BS6323-6 Cold Finished Electric Resistance Welded Steel Tubes with BK , BKW , GBK , GZF , NBK , NZF

    BS6323-6 CW1 CW2 CW3 CW4 CW5 Cold Finished Electric Resistance Welded Steel Tubes with BK , BKW , GBK , GZF , NBK , NZF


    Standard: BS6323-6 Seamless and Welded Steel Tubes for Automobile,Mechanical and General Engineering Purposes
    Part 6: Specific requirements for cold finished electric resistance welded(including induction welded) steel tubes


    Applications: for Auto industry / for machinery use/mechanical and general engineering purposes

    Size range: O.D.:6-350mm W.T.:1-35mm L:max12000mm


    Method of Manufacture:

    The tubes are manufactured from flat rolled strip, longintudinally welded continuously by the passage of an electric current across the abutting edges without the addition of filler metal.

    They are subsequently cold finished normally on both the inside and outside surfaces, where it is permissble to have both an adherent layer of residual lubricant originating from the drawing process and visible traces of the internal weld upset.

    If phosphate or other residues are detrimental to subsequent processing, their removal shall be the subject of an agreement between the manufacturer and purchaser.


    Delivery Condition:

    The tubes are supplied in one of the following condition:

    a. Cold finished/hard (cold finished as drawn) : BK

    b. Cold finished/soft (lightly cold worked ): BKW

    c. Annealed: GBK

    d. Annealed (including de-scaling): GZF

    e. Normalized: NBK

    f. Normalized ( including de-scaling): NZF

    It is permissible for tubes supplied in the GBK and NBK conditions to be discoloured, but they shall be free from loose scale.

    Where tubes, in the GBK condition are required bright annealed, this shall be the subject of an agreement between the purchaser and the manufactuer.


    Testing:

    Flattening test

    Drift expanding test

    Leak tightness test.


    Chemical Compositions and mechanical properties

    Design
    ation

    Chemical Compositions( ladle analysis)

    mechanical properties

    C

    Si

    Mn

    P

    S

    BKc
    (cold finished/hard)

    BKWc (cold finished/soft )

    GBK and GZF (annealed)

    NBK and NZF (normalized)

    max.

    max.

    max.

    max.

    max.

    Re min.

    Rm
    min.

    A
    min.

    Re min.

    Rm
    min.

    A
    min.

    Re
    min.

    Rm
    min.

    A
    min.

    Re
    min.

    Rm
    min.

    A
    min.


    %

    %

    %

    %

    %

    N/m
    m2

    N/m
    m2

    %

    N/m
    m2

    N/m
    m2

    %

    N/m
    m2

    N/m
    m2

    %

    N/m
    m2

    N/m
    m2

    %

    CEW1a

    0.13

    __

    0.60

    0.050

    0.050

    320

    400

    6

    245

    350

    10

    150

    270

    27

    155

    280

    25

    CEW2a

    0.16

    __

    0.70

    0.050

    0.050

    355

    420

    6

    260

    370

    10

    160

    300

    27

    195

    320

    25

    CEW3a

    0.20

    0.35

    0.90

    0.050

    0.050

    360

    450

    6

    280

    400

    9

    170

    340

    26

    215

    360

    24

    CEW4b

    0.25

    0.35

    1.20

    0.050

    0.050

    415

    520

    5

    315

    450

    8

    200

    400

    24

    235

    410

    22

    CEW5b

    0.23

    0.50

    1.50

    0.050

    0.050

    480

    600

    4

    385

    550

    6

    __

    __

    __

    340

    490

    20


    Tolerance on diameter
    diameterTolerance
    overUp to and including
    mmmmmm
     30±0.10
    3050±0.15
    5070±0.20
    7090±0.25
    90110±0.30
    110130±0.35
    130160±0.45
    160190±0.55
    190220±0.65
    220250±0.75

    Tolerance on specified cut lengths
    Specified cut lengthTolerance(mm)
    overup to and including
    mmmmmm
     500+2
    -0
    5002000+3
    -0
    20005000+5
    -0
    50007000+10
    -0
    7000__by agreement
    NOTE Closer tolerances may be obtained by agreement between the purchaser and manufacturer.

    Distance between platens for flattening test
    DesignationDistance between platens
     %
    CEW 166
    CEW 275
    CEW 385
    CEW 485
    CEW 585

    Minimun expansion for drift expanding test
    DesignationExpansion minimun for tube thickness
    Up to and including 4mmOver 4 mm up to and including 8 mm
     %%
    CEW 1128
    CEW 2128
    CEW 3106
    CEW 485
    CEW 585

    Note: Special steel grade is also available, according to customer request.


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    Publications referred to:

    BS 3601

    BS 3602

    BS 3603

    BS 3604

    BS 3605

    BS 4360

    BS 4848

    BS 4848-2

    BS 5135

    BS 6323

    BS 6323-1

    BS 6363

    ISO 4200


    Product Tags:

    welded steel pipe

      

    welding steel tubing

      
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