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  4. ASTM A572 LSAW steel pipe
  • ASTM A572 LSAW steel pipe
  • ASTM A572 LSAW steel pipe
ASTM A572 LSAW steel pipeASTM A572 LSAW steel pipe

ASTM A572 LSAW steel pipe

  • Product Item:LSAW steel pipe
  • Size : OD:406-1422.40mm WT:1.65-40mm, Length: 6mtr-20mtr
  • Standard & Grade :ASTM A572 Grades 42, 50, 55,60,65
  • Ends:Square Ends/Plain Ends (straight cut, saw cut, torch cut), Beveled/Threaded Ends
  • Coating: 3PE Coating;3PP Coating;FBE Coating;Epoxy Coating;Special Painting
  • Straight seam welded steel pipe(LSAW steel pipe) , Double-sided submerged arc welding steel pipe(DSAW steel pipe) , longitudinal submerged arc welded steel pipe(LSAW steel pipe)
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    Description
    Specification
    The process of Lsaw steel pipe:
    Plate  feeding → Edge Milling and Beveling → Board Probe → Edge Crimping →molding→Slag→Track Pre-Welding  → Tab Welding  → Inside Welding  → Slag  → Outside Welding  → Tab Removal  → Ultrasonic Inspection  → X-ray Inspection  →  Mechanical Expansion  → Flame Flat  → Hydro-static Testing  → Ultrasonic Inspection for pipe end and welding seam  → Weld and Pipe End X-ray Inspection  → Tube end weld grinding  → End Facing and Beveling  → Weighing and measuring  → Spray paint Marking  → Final Inspection  → Storage  → Storage and Shipment

    ASTM A572 standard is for high strength low alloy (HSLA) structural steel plate integrated with columbium-vanadium, the specification covers 5 grades of HSLA steel profiles, plates, sheet piling, and bars.
    Applications of A572 Steel Plates:
    Grades 42, 50, 55 are intended for riveted, bolted or welded structural, Grade 60 and 65 are for riveted and bolted construction of bridges, welded constructions and more applications.
    Referenced Documents:
    ASTM Standards:
    • A6/A6M: General requirements for rolled structural steel bars, plates, shapes, and sheet piling
    • A36/A36M:  Carbon structural steel specification
    • A514/A514M: Specification for quenched and tempered alloy steel plate with high yiled strength, suitable for welding
    • A588/A588M Specification for High-Strength Low-Alloy Structural STeel, up to 50 ksi [245 MPa] Minimum Yield Point, with Atmospheric Corrosion Resistance
    ASTM A572 Grade 50, 60 & 65 Data Sheet Properties
    Chemical properties shall conform to the requirements prescribed in Table 2 and Table 3 for alloy elements. Tensile strength and yiled strength shall comply with Table 4.
    Chemical Composition
    Table 3: Alloy elements composition

    Type A

    Elements

    Heat Analysis, %

    1

    Columbium

    0.005-0.05B

    2

    Vanadium

    0.01-0.15C

    3

    Columbium

    0.005-0.05B

    4

    Vandadium

    0.01-0.15C

    5

    Columbium plus vanadium

    0.02-0.15D

    6

    Titanium

    0.006-0.04

    7

    Nitrogen

    0.003-0.015

    8

    Vanadium

    0.06 max


    A: Alloy content shall comply with Type 1, 2, 3, or 5 and shall be on test report.

    B: Product analysis limits = 0.004 to 0.06%.
    C: Product analysis limits = 0.005 to 0.17%.
    D: Product analysis limits = 0.01 to 0.16%.
    Mechanical Properties


    Grade

    Yield Point, min

    Tensile Strenth, min

    Minimum Elongation, % B,C,D

    kis

    [MPa]

    ksi

    [MPa]

    in 8 in

    [200 mm]

    in 2 in

    [200 mm]

    42 [290]

    42

    [290]

    60

    [415]

    20

    24

    50 [345]

    50

    [345]

    65

    [450]

    18

    21

    55 [380]

    55

    [380]

    70

    [485]

    17

    20

    60 [415]

    60

    [415]

    75

    [520]

    16

    18

    65 [450]

    65

    [450]

    80

    [550]

    15

    17


    A:  Specimen shall comply with Specification of A6/A6M.
    B: Elongation not required to be determined for floor plate.
    C: For wide flange shapes over 426 lb/ft [634 kg/m], elongation in 2 in. [50 mm] of 19% minimum applies.
    D: For plates wider than 24 in. [600 mm], the elongation requirement is reduced two percentage points for Grade 42, 50, and 55 [290,345,and 380], and three percentage points for Grade 60 and 65 [415 and 450]. See elongation requirement adjustment in the Tension Tests section of Specification A6/A6M.
    General Requirements for Delivery
    Structural steel plates furnished under ASTM A572 shall comply with requirements of the current edition of Specification A6/A6M, for the specific structural product ordered, unless a conflict exists in which case this specification shall prevail.
    Coils are not applicable to this specification until they are processed to a finished structural product. Structural steel plates produced from coil means they have been cut to individual lengths from a coil. The processor directly controls, or is responsible for, the operations involved in the processing of a coil into a finished structural product. Such operations include decoiling, leveling or straightening, hot-forming or cold-forming (if applicable), cutting to length, testing, inspection, conditioning, heat treatment (if applicable), packing, marking, loading for shipment, and certification.
    Our Supply Range:
    Description: Carbon Steel ASME SA572/ ASTM A572 Grade C & D
    Manufacturing Types: Hot Rolled
    Thickness: 2 to 150 mm
    Width: 0.6m to 3m
    Length: 6m, 12m, customized
    Surface: Natural, Painted
    Packing: Standard sea packing, bundled with streel strip.



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