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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
  • Submerged Arc Welded Pipe

    Special design available according to requirement. Product name API 5L Longitudinal Submerged Arc Welded Pipe LSAW steel pipe Producing standard Round pipe: GB/T3091, BS1387-1987, ASTM A53, DIN2440, Square/Rectangular tube: GB/T6728-2002, ASTM A500 Gr A B C, JIS G3466 etcEN39-2001. Steel Grade...
    Product Details:

    Special design available according to requirement.

    Product name

    API 5L Longitudinal Submerged Arc Welded Pipe LSAW steel pipe


    Producing standard

    Round pipe: GB/T3091, BS1387-1987, ASTM A53, DIN2440, Square/Rectangular tube: GB/T6728-2002, ASTM A500 Gr A B C, JIS G3466 etcEN39-2001.


    Steel Grade

    Carbon steel: Q195, Q215,Q235,Q345;SS400, STK400, STK490, ASTM A500, A53, ST37, ST35 etc.


    Surface treatment

    Hot dip galvanized, painting, oil, plastic powder coating, plain/beveled ends or threaded with sockets / coupling and plastic caps etc.


    Inspections

    With hydraulic testing, eddy current and infrared test etc


    Usages

    Scaffolding pipe, Structure pipe, Fence/Door pipe, Furniture, Low pressure fluid pipe for water oil or gas, Boiler pipe


    Package

    In bundles by steel strips, waterproof woven cloth with 7 slats, then pack into 20' or 40' container or in bulk etc


    Lead time

    7-30 days or as per your requirements


    Submerged arc welding

    Submerged arc welding (SAW) is a common arc welding process. The first patent on the submerged-arc welding (SAW) process was taken out in 1935 and covered an electric arc beneath a bed of granulated flux. Originally developed and patented by Jones, Kennedy and Rothermund, the process requires a continuously fed consumable solid or tubular (metal cored) electrode. The molten weld and the arc zone are protected from atmospheric contamination by being "submerged" under a blanket of granular fusible flux consisting of lime, silica, manganese oxide, calcium fluoride, and other compounds. When molten, the flux becomes conductive, and provides a current path between the electrode and the work. This thick layer of flux completely covers the molten metal thus preventing spatter and sparks as well as suppressing the intense ultraviolet radiation and fumes that are a part of the shielded metal arc welding(SMAW) process.

    SAW is normally operated in the automatic or mechanized mode, however, semi-automatic (hand-held) SAW guns with pressurized or gravity flux feed delivery are available. The process is normally limited to the flat or horizontal-fillet welding positions (although horizontal groove position welds have been done with a special arrangement to support the flux). Deposition rates approaching 45 kg/h (100 lb/h) have been reported — this compares to ~5 kg/h (10 lb/h) (max) for shielded metal arc welding.

    Although currents ranging from 300 to 2000 A are commonly utilized, currents of up to 5000 A have also been used (multiple arcs).

    Single or multiple (2 to 5) electrode wire variations of the process exist. SAW strip-cladding utilizes a flat strip electrode (e.g. 60 mm wide x 0.5 mm thick). DC or AC power can be used, and combinations of DC and AC are common on multiple electrode systems. Constant voltage welding power supplies are most commonly used; however, constant current systems in combination with a voltage sensing wire-feeder are available.


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