ERW/LSAW Welded Steel Pipe  

Short Description:

Product name: straight seam steel pipe

Materials: Q235, Q355, S195T, GR.B, X42, X52, X60, CC60, CC70, ST35, ST52, S235JR, S355JR, SGP, STP G370, STP

G410, GR12, GR2 etc.

Standard: GB 3091, API 5L, ASTM A53, A515, A672, A500, A252, BS1387, EN10255, EN10217, JIS G3454 etc.

Specification:

Outer diameter: 1/4”-48” (13.7mm-1219.2mm).

Wall thickness: 1.2mm-60mm.

Length: 2m-14m.


  • FOB Price: US $0.5 - 9,999 / Piece
  • Min.Order Quantity: 100 Piece/Pieces
  • Supply Ability: 10000 Piece/Pieces per Month
  • Port: Hebei China
  • Payment Terms: L/C,D/A,D/P,T/T
  • Product Detail

    Technical data

    Production

    Package

    Product Tags

    1. Welding type of welded pipe: ERW, SAWL, EFW, HFW.

    2. Materials: Q235, Q355, S195T, GR.B, X42, X52, X60, CC60, CC70,ST35, ST52, S235JR, S355JR, SGP, STP G370,

    STP G410, GR12, GR2 etc.

    3. Standard: GB 3091, API 5L,ASTM A53, A515, A672, A500,A252,,BS1387, EN10255, EN10217,JIS G3454 etc.

    4. Specification:

    Outer diameter: 1/4”-48” (13.7mm-1219.2mm).

    Wall thickness: 1.2mm-60mm.

    Length: 2m-14m.

    5. End: plain end, beveled end, thread, coupling, plastic cap in the both end, pipe clamp.

    6. Surface: oiled, black painted or varnish, galvanized, 3PE, FBE, or other epoxy coating.

    7. Inspection: hydrostatic testing, ultrasonic testing, eddy current testing, magnetic particle testing, impact testing, hardness

    testing, etc.

    8. Application: petroleum, chemical, electric power, water, construction, pipelines, etc.


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  • 1. Straight seam steel pipe specification

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    2. Pipe geometric tolerance

    Standard code content items SY/T5037 -2000 T9711 -1997 (A class pipe) API 5L(43 version)
    Applications Gas, water, kerosene, air, heating, steam and other general fluid pipes with steel pipes Oil and gas industry transmission pipe Oil and gas industry transmission pipe
    Steel Q195、Q215、Q235 L175 -L483 A、B、X42 ~ X70
    Size body OD D<508  ±0.75%DD≥508  ±1.00%D D<508  ±0.75%DD≥508  ±1.00%D D<508  ±0.75%D508≤D≤914   -0.25%D ~ +0.75%DD>914  -0.32%D ~ +6.35%D
    end OD D<508  ±0.75%D or ±2.5  be minimumD≥508  ±0.50%D or ±45   be minimum D≤273.1    -0.40 ~ +1.59D>323.9  -0.79 ~ +2.38 D≤273.1    -0.40 ~ +1.59D>323.9  -0.79 ~ +2.38
    Tolerance W.T. <508 ±12.5%t -12.5%t ~ +12.5%t -12.5%t ~ +12.5%t
    ≥508 ±10.0%t L175 ~ L245 -10.0%t ~ +17.15%tL290 ~ L555  -8.0%t ~ +19.5%t Not beyond B class -12.5%t ~ +17.5%tNot lower than X42 -8.0%t ~ +19.5%t
    Oval tube Inner tube end range 100 ±1%D D>508 steel in the range from 101.6 max OD of the pipe end can not be larger than the DN of 1%D; smallest OD than the DN shall be 1% D D>508 steel in the range from 101.6 max OD of the pipe end can not be larger than the DN of 1%D; smallest OD than the DN shall be 1% D
    Curvature degree(straightness) Not exceed 0.2% of the pipe length Not exceed 0.2% of the pipe length Not exceed 0.2% of the pipe length
    Pipe end beveling Bevel degree 30° -35°  blunt edge1.6±0.8 Bevel degree 30° -35°  blunt edge 1.59±0.79 Bevel degree 30° -35°  blunt edge 1.59±0.79
    Tilt 1.6≤D<813 <1.59 <1.59
    Misalignment t≤12.7 0.35t and not more than 3.0 <1.59 <1.59
    t>12.7 0.25t 0.1251 and 3.18  take the minimum value 0.1251 and 3.18  take the minimum value
    Weld reinforcement t≤13…<3.2t>13  <4.8 t≤12.7…<3.18t>12.7  <4.76 t≤12.7…<3.18t>12.7  <4.76
    Chemical analysis Take one sample from each batch Take two samples from each batch Take two samples from each batch
    Tensile test Take one welded joint sample from each batch Base matel: take one sample from each smelting batchSpiral weld:take one sample from each smelting batch  butt weld: not more than 50 to take one sample Base matel: take one sample from each smelting batchSpiral weld:take one sample from each smelting batch  butt weld: not more than 50 to take one sample
    Guided bend test No Each batch take a positive test sample and an anti-bend bend sample,   butt weld no more than 50 to take a positive bend and an anti-bend sample. Each batch take a positive test sample and an anti-bend bend sample,   butt weld no more than 50 to take a positive bend and an anti-bend sample.
    Fracture toughness testing No When the contract requirements,smelting complex batch takes three samples; D≥508, the drop hammer impact each smelting batch take two. When the contract requirements,smelting complex batch takes three samples; D≥508, the drop hammer impact each smelting batch take two.

    Straight seam steel pipe production process

    20200304165431857 (1)

    474a217d

    We have two kinds of packaging:

    1. Package suitable for every kind of transport;

    2. According to customer’s requirement.

    20200306151340436

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