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Centerway steel co., ltd
astm a252 steel pipe casing,spiral welded pipe piles,a252 pipe

  • ASTM A671

    ASTM A671, Standard Specification for Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures. Grades shall designate the type of plate used while class shall designate the type of heat treatment performed during pipe manufacture. Class shall be designated as to whether the weld is radiographically examined, and as to whether the pipe is pressure tested.

    Plain Carbon steel grades：CA 55, CB 60,CB 65,CB 70 CC 60,CC 65,CC 70

    Nickel steel grades: CF 65,CF 70,CF 65,CF 70

    Alloy steel grades:CJA 115, CJB 115,CJE 115,CJF 115,CJH 115,CJP 115

    Chemical Composition

    Steel grade

    C max

    Si

    Mn

    P

    S

    A45

    0.17

    /

    0.98

    0.035

    0.035

    A50

    0.22

    /

    CA55/A55

    0.28

    /

    B55

    0.20

    0.13~0.45

    CB60/B60

    0.24

    CB65/B65

    0.28

    CB70/C70

    0.31

    1.30

    C55

    0.18

    0.55-0.98

    CC60/C60

    0.21

    CC65/C65

    0.24

    0.79-1.30

    CC70/C70

    0.27

    Mechanical Properties of A671 Pipe

    Steel Grade

    Yield point (N/mm2) max

    Tensile Stregth (N/mm2)max

    Elongation (%)

    A45

    165

    310~450

    30

    A50

    185

    345~485

    28

    A50

    185

    345~485

    28

    CA55/A55

    205

    380~515

    27

    B55

    205

    380~515

    27

    CB60/B60

    220

    415~550

    25

    CB65/B65

    240

    450~585

    23

    CB70/B70

    260

    485~620

    21

    C55

    205

    380~515

    27

    CC60/C60

    220

    415~550

    25

    CC65/C65

    240

    450~585

    23

    CC70/C70

    260

    485~620

    21

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