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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
  • Carbon Steel Dsaw Pipe

    Difference between ERW and DSAW pipes ERW pipes means Electric Resistance Welded Pipes. Electric resistance welding at a glance *ASTM A53 Standard Specifications *ASTM A252 standard specification *The Purpose Guidance Of Welded Steel Pipe *Why welding stee tubes *Kind for welding pipe *ERW pipe...
    Product Details:

    PRODUCT NAME

    PROMOTIONAL PRICE ssaw/sprial steel pipessaw/SAW/DSAW/ SSAW HSAWsprial carbon 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.


    Difference between ERW and DSAW pipes

    image001

    ERW pipes means Electric Resistance Welded Pipes.


    Electric resistance welding at a glance

    image002

    *ASTM A53 Standard Specifications

    *ASTM A252 standard specification

    *The Purpose Guidance Of Welded Steel Pipe

    *Why welding stee tubes

    *Kind for welding pipe

    *ERW pipe weld contour shape


    Difference between ERW and DSAW pipes is generated in the carbon steel smelting defect  smelting and casting process, such as segregation, non-metallic inclusions, porosity, shrinkage and cracks.

    image003


    Double Submerged Arc Welded (DSAW) steel pipe

    Double Submerged Arc Welded (DSAW) steel pipe is available in straight and spiral welded formats and used in a variety of applications. The submerged welding process protects the steel from contamination of impurities in the air. Both inside and outside welds are performed.


    Segregation

    Segregation is the uneven distribution of chemical composition in the steel, in particular harmful elements such as sulfur, phosphorus enrichment in the ingot.


    Non-metallic inclusions

    Non-metallic inclusions refers to non-metallic inclusions in steel containing impurities such as sulfides and oxides.


    Stomata

    Stomata refers iron and carbon monoxide gas effect generated in the pouring can not fully escape and stay in the tiny pores in the ingot.


    Shrinkage

    Shrinkage is due to the liquid steel ingot mold from outside to inside, the volume contraction during solidification bottom-up, because the level drops, the final solidification of liquid steel parts can not be added to form.


    Crack

    Solidification of liquid steel in the order due to different causes stress, tension cracks may appear larger parts.


    Hot Tags: carbon steel dsaw pipe, China, suppliers, manufacturers, factory
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