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    Weld steel pipes

    Welded steel pipe (steel pipe manufactured with a weld) is a tubular product made out of flat plates, known as skelp, that are formed, bent and prepared for welding.

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    Welded pipes specification and size

    ASTM / ASME

    Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
    Electric-Resistance-Welded Steel Pipes ASTM A135 42.2-114.3 x 2.11-2.63 A
    Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler and Superheater Tubes ASTM A178 42.2-114.3 x 2.11-2.63 A, C,D
    ERW and Hot-dip Galvanized Steel Pipes ASTM A53 21.3-273 x 2.11-12.7 A, B
    Pipes for Piling Usage ASTM A252 219.1-508 x 3.6-12.7 Gr2, Gr3
    Tubes for General Structural Purpose ASTM A500 21.3-273 x 2.11-12.7 Carbon Steel
    Square Pipes for General Structural Purpose ASTM A500 25 x 25-160 x 160 x 1.2-8.0 Carbon Steel

    BS

    Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
    Screwed and Socketed Steel Tubes BS 1387 21.4-113.9 x 2-3.6 Carbon Steel

    EN

    Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
    Scaffolding Pipes EN 39 48.3 x 3.2-4 Carbon Steel

    JIS

    Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
    Carbon Steel Tubes for General Structure Purpose JIS G3444 21.7-216.3 x 2.0-6.0 Carbon Steel
    Carbon Steel Tubes for Machine Structure Purpose JIS G3445 15-76 x 0.7-3.0 STKM11A, STKM13A
    Carbon Steel Pipes for Ordinary Piping JIS G3452 21.9-216.3 x 2.8-5.8 Carbon Steel
    Carbon Steel Pipes for Pressure Service JIS G3454 21.7-216.3 x 2.8-7.1 Carbon Steel
    Carbon Steel Rigid Steel Conduits JIS G8305 21-113.4 x 1.2-3.5 G16-G104, C19-C75, E19-E75
    Carbon Steel Rectangular Pipes for General Structure JIS G3466 16 x 16-150 x 150 x 0.7-6 Carbon Steel

    Special Welded Tubes

    We can produce precision and high-frequency welded steel tubes and pipes with all possible dimensions and shapes available.
    API5L Steel pipe for pipeline transportation system
    Hot dip galvanized steel pipe

    Hot dip galvanized steel pipe

    Hot-dip galvanizing (HDG), as referenced is the process of dipping fabricated steel into a kettle or vat of molten zinc.

    Anti-corrosion steel pipe

    Anti-corrosion steel pipe is processed through the preservation process, which can effectively prevent or slow down the process in the transport and use of chemical or electrochemical corrosion reaction of steel pipe.

    Anti-corrosion steel pipe
    Stainless Steel Welded Pipe

    Stainless Steel Welded Pipe

    Our staff are qualified and certified according to all current welding procedures, thus guaranteeing our customers longitudinally welded stainless steel pipes in line with the requirements.

    • Stainless steel contains chromium which provides the properties of corrosion resistance at high temperatures.
    • Stainless steel can withstand corrosive or chemical environments due to its smooth surface.
    • Stainless steel products are safe for long-term use with excellent resistance of corrosion fatigue.

    Weled steel pipe specification, Standard and identification

    Welded steel pipe (steel pipe manufactured with a weld) is a tubular product made out of flat plates, known as skelp, that are formed, bent and prepared for welding.

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    SUNNY STEEL

    Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.

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