ERW/LSAW Welded Steel Pipe  

Luv hauj lwm:

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.


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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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  • Tom ntej:

  • 1. Ncaj leeg steel yeeb nkab specification

    20200114164015618.webp

     

    2. Yeeb Nkab geometric kam

    Standard code ntsiab lus cov khoom SY / T5037 -2000 T9711 -1997 (A chav kawm ntawv yeeb nkab) API 5L (43 version)
    daim ntawv sau npe Gas, dej, kerosene, huab cua, cua kub, chav thiab lwm yam kev kua kav nrog steel kav Roj thiab cov nkev kev lag luam kis tau tus mob yeeb nkab Roj thiab cov nkev kev lag luam kis tau tus mob yeeb nkab
    Steel Q195, Q215, Q235 L175 -L483 A, B, X42 ~ X70
    loj lub cev 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
    kawg 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
    kam rau ua WT <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
    dawb raj Puab raj kawg ntau 100 ± 1% D D> 508 steel rau hauv lub chav los ntawm 101,6 max OD ntawm cov yeeb nkab kawg yuav ua tsis tau loj tshaj lub DN ntawm 1% D; tsawg tshaj plaws OD tshaj lub DN yuav tsum yog 1% D D> 508 steel rau hauv lub chav los ntawm 101,6 max OD ntawm cov yeeb nkab kawg yuav ua tsis tau loj tshaj lub DN ntawm 1% D; tsawg tshaj plaws OD tshaj lub DN yuav tsum yog 1% D
    Curvature degree (straightness) Tsis pub tshaj 0.2% ntawm cov yeeb nkab ntev Tsis pub tshaj 0.2% ntawm cov yeeb nkab ntev Tsis pub tshaj 0.2% ntawm cov yeeb nkab ntev
    Yeeb Nkab kawg 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 thiab tsis ntau tshaj li 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 qhov cuab lub zog 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
    Tshuaj tsom xam Siv ib tug qauv los ntawm txhua batch Siv ob kuaj los ntawm txhua batch Siv ob kuaj los ntawm txhua batch
    tensile xeem Siv ib tug welded ob leeg hnoos qeev los ntawm txhua 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
    Coj khoov xeem Tsis 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.
    Puas toughness xeem Tsis 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)

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    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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