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  • Cangzhou Steel Pipe Group (CSPG) Co., Ltd.
  • ADD:No.92 Jiefang East Rd., Cangzhou City, Hebei Province, China
  • TEL:+86-31-75673271
  • MOBILE:+8615373302068
  • E-MAIL:ella@cnspipe.com
  • API 5L SSAW Steel Pipe

    Specification Octal supply API 5L welded (ERW, EFW, LSAW, SSAW) steel line pipe in Gr B, X42, X46, X52, X56, X60, X65 PSL1, PSL2 and for sour service (NACE pipe). Line pipe brief introduction API 5L steel line pipe is for oil and gas industries pipelines, developed for different working...
    Product Details:

    Product name

     API 5L SSAW SAW Spiral Welded Steel Pipe3pe coated anti-corrosion sprial welded steel pipe

    Standard

    ASTM, GB, API, JIS, BS, DIN, YB, SNY, etc

    Material

    10#,20#,45#,A53A,A53B,A106Gr.A,A106Gr.B,A106A,A106B,ST52,ST358,16Mn,
    Q235, Q195, Q345, Q215, API 5L Gr.B,Gr.65,Gr.60,Gr.70,
    X42,X52,X60,X65,X70,X80,etc

    Specification

    Outer diameter: 219mm-3620mm
    Wall thickness: 2.5mm-30mm
    Length: 6m-12m or as requested

    Seam

    SAW(Spiral welded),SSAW(Spiral submerged-arc welded),HSAW,(Helical Submerged Arc
    Welded), ERW, JCOE, LSAW, UOE

    Surface

    Black painted, PE/PVC/PP coated, Galvanized, color coated, anti rust varnished,
    anti rust oiled, checkered, epoxy coating, etc.

    End

    plain end, spigot & socket joint, beveled, cut square, flanged, piling shoes

    End protector

    1) Plastic pipe cap
    2) Iron protector

    Package

    Standard export package, suit for all kinds of transport or as required.

    Price term

    EXW, FOB, CFR, CIF, etc.

    Payment term

    T/T, L/C at sight, etc.

    Application

    1) General service for industries ( petroleum, chemical, aviation, etc.)
    2) Fluid, gas and oil transport,
    3) Press and heat transmission,
    4) City construction, etc.


    Specification

    Octal supply API 5L welded (ERW, EFW, LSAW, SSAW) steel  line pipe in Gr B, X42, X46, X52, X56, X60, X65 PSL1, PSL2 and for sour service  (NACE pipe).


    Line pipe brief introduction

    API 5L steel line pipe is for oil and gas industries  pipelines, developed for different working environments. The steel line pipe  material generally in carbon steel and comply to API SPEC 5L specifications.Applied  for petroleum and natural gas industries, oil industries requirements for transportation and are expected working in extreme situations, low and high  temperatures, corrosion resistance for corrosive environments, and for sour  services in H2S conditions.


    Welded (ERW, LSAW, SSAW) steel line pipe grade feature

    Common Class: API 5L Gr.B PSL1,  PSL2, Sour Service pipe

    Medium: X42,  X46

    Medium: X52

    Medium and high: X56

    High level: PSL1,  PSL2 LSAW line pipe

    High: API 5L  X65 PSL1, PSL2 LSAW/SSAW line pipe

    Premium high: API 5L X70

    Premium high: API 5L X80


    Chemicals composition and mechanical strength

    API 5L Welded pipe chemicals has more strict control than  seamless. More details about API 5L Seamless please visit here.


    API 5L psl1 pipe chemical composition properties

    Tensile strength and yield strength is same with API 5L  seamless pipe.

    image004_副本


    Our Supply range for API 5L welded line pipe

    Welded (ERW, LSAW, SSAW) steel line pipe: 1/2” to 60”

    Range of Thickness: SCH 10 to SCH 160

    Ends Type: Beveled ends, Plain ends

    Range of length: 20FT, 40FT or customized

    Protection Caps in plastic or iron available

    Surface appearances: Natural, Varnished, Black painting, 3PE, FBE, etc


    Welded Pipe manufacturing types

    There are 3 welding types: ERW (Electric Resistance  Welding), LSAW (Longitudinally Submerged Arc Welding), and SSAW (Spirally  Submerged Arc Welding) welding types.

    ERW pipe is a type of Resistance pipe stands apart from  welded pipe and DC welded pipe in two different manners as listed below. Based  on the welding frequency, the IF welding for low frequency and the ultra-IF  welding for high frequency. In case of thin-walled pipe, there is a high frequency weld used typically in case of contact welding and induction welding. When the usage is for a small-diameter pipe, they make use of DC welding. There is a high frequency welding process used to manufacture pipes that are  comprehensive and is of ERW type. For oil and gas storage, the best recommended type is ERW longitudinal, owing to its quality, ease of transport and cost.

    Both LSAW pipe and SSAW pipe are SAW pipe (Submerged Arc  Welding Steel Pipe), is manufactured by making use of a submerged arc soldering process for preparing the steel and it results in high density pipe. Owing to  the flux layer, there is no instant heat loss and it gets concentrated near the  weld. It results in high quality, highly efficient arc and smoke, which finds  intensive usage in pressure vessels, pipe manufacturing, beams, fluids, steel works etc. SAW pipe find its main usage in LSAW pipe, which is Longitudinally Submerged Arc Welding pipe.


    ERW welded pipe manufacturing process

    ERW process normally applied to the pipe below 24 in, 609  mm.

    ERW/HFW Longitudinally Welding Steel Line Pipe (Electric  Resistance Welding ) Manufacturing Flow Chart.

    Uncoiling – Flattening – Shearing and Butt Welding – Loop Storing – Plate UT –  Trimming – Forming – High Frequency Welding – Removal of Inside and Outside  Blurs – Ultrasonic Testing – Annealed by Medium Frequency – Air Cooling – Water  Cooling – Sizing – Straightness – Cutting Off – Dimension and Initial Surface  Inspection – Pipe Ends Beveling – Hydrostatic Test – Ultrasonic Testing of  Entire Tube – Off Line Ultrasonic Testing – Ultrasonic Testing for Pipe Ends –  Dimension and Final Surface Inspection – Corrosion Resistant Coating – Marking  – Pipe Ends Protection – Inspection and Warehousing


    LSAW pipe manufacturing process

    LSAW pipe applied to diameters from 20 in (508 mm) to 40  in (1016 mm).

    LSAW Welded Steel Line Pipe Manufacturing Flow Chart:

    Plate UT – Vacuum Lifting – Ultrasonic Inspection – Edge Milling – Pre Bending  – Type J Forming – Type C Forming – Type O Forming – Tack Welding By CO2 Gas  Shield Arc Welding – Tab Welding – Inside Welding – Outside Welding – Removal  of Tab Plate – Cleaning – Rounding – X Test – Ultrasonic Testing – Washing  Before Expansion – Mechanical Expansion – Washing After Expansion –  Straightness – Hydrostatic Test – Ultrasonic Testing – Weld Grinding for Pipe  Ends – Mechanical Facing – X Ray Test for Body and Both Ends – Ultrasonic  Testing for Pipe Ends – Magnetic Particle Inspection For Both Ends – Weighing  and Measuring Length – Product Inspection – Outside Coating – Inside Coating – Marking  – Packing and Warehousing.


    SSAW pipe manufacturing process

    SSAW pipe applied for diameters up to 60 in (1524 mm)

    SSAW Steel Pipe Manufacturing Flow Chart:

    Uncoiling – Flattening – Shearing and Butt Welding – Edge Milling – Preliminary  Rolling – Forming – Inside and Outside Welding – Cutting Off – Ultrasonic  Testing – X Ray Test – Weld Grinding for Pipe Ends – Expanding at Pipe Ends –  Hydrostatic Test – Ultrasonic Inspection – Pipe Ends Beveling – X Test – Production Inspection – Marking – Warehousing


    Key differences between SAW (LSAW, SSAW) and ERW pipe

    As above manufacturing processes we can see SAW (LSAW,  SSAW) and ERW pipes are entirely different right from formation, welding etc. And hence, the performance of both the pipes differ in the following aspects:
    1. The surface quality of ERW pipes are better when  compared to SAW (LSAW, SSAW) pipes, as they are smooth and have a better finish. In most of the SAW pipes, it is mainly about the weld reinforcement internally and externally.

    2. The defects found in ERW pipes are lesser than SAW pipes. As there is a solvent deposit in SAW pipes, it results in more defects  apart from the defects in the volume. The defects found in ERW pipes are only confined to wire-line and straight welds and it can be inspected easily. The  defects can be noticed easily and the ultrasonic reflection on the surface  makes it easier to detect.

    3. The residual stress ratio in ERW is lower than SAW pipes. As ERW pipe deformation happens more in ERW followed by a sizing of flat  oval, it results in elliptical vertical changes and necking, thereby making the stress smaller. The displacement of ERW pipes was smaller when compared along  the axial and transverse incisions for comparison with SAW pipes built using the same material and it was also easy to detect.

    4. Although the overall performance of both ERW and SAW pipes are the same, once the pipes have defect, the steel scrap and welding can be done on ERW, while it is not the same in case of SAW, which would result in cracking or corrosion, making the ERW more durable.


    Applications of the API 5L welded line pipe

    For Petroleum and natural gas industries, steel pipe for  pipeline transportation systems.

    Octal supplied the pipe complied to the international standard API 5L, which specified requirements for the manufacture of two product specifications levels  (PSL1 and PSL2) of  welded line pipe for use in pipeline transportation systems in the oil and gas  industries.


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