Jiangsu Hongbao Group Co., Ltd. 

Manufacture since 1958

Home
Products
About Us
Factory Tour
Quality Control
Contact Us
Request A Quote
Home ProductsWelded Steel Tube

DOM E155 E195 E235 E275 E355 Erw Carbon Steel Pipe , Seamless Hydraulic Tubing

DOM E155 E195 E235 E275 E355 Erw Carbon Steel Pipe , Seamless Hydraulic Tubing

    • DOM E155 E195 E235 E275 E355 Erw Carbon Steel Pipe , Seamless Hydraulic Tubing
    • DOM E155 E195 E235 E275 E355 Erw Carbon Steel Pipe , Seamless Hydraulic Tubing
    • DOM E155 E195 E235 E275 E355 Erw Carbon Steel Pipe , Seamless Hydraulic Tubing
    • DOM E155 E195 E235 E275 E355 Erw Carbon Steel Pipe , Seamless Hydraulic Tubing
    • DOM E155 E195 E235 E275 E355 Erw Carbon Steel Pipe , Seamless Hydraulic Tubing
  • DOM E155 E195 E235 E275 E355 Erw Carbon Steel Pipe , Seamless Hydraulic Tubing

    Product Details:

    Place of Origin: Jiangsu
    Brand Name: Hongbao
    Certification: TS16949, ISo9001
    Model Number: HBWS-001

    Payment & Shipping Terms:

    Minimum Order Quantity: 2MT
    Price: Negotiable
    Packaging Details: Packaging: Wooden cases
    Delivery Time: Negotiable
    Supply Ability: 800MT/Month
    Contact Now
    Detailed Product Description
    Material: 26MnB5 Length: Random Or Fixed Length
    Shape: Round Technical: Seamless Or Welded
    Standard: EN10305-1, EN10305-2 Etc Name: Erw Carbon Steel Pipe

     

    DOM Welded Carbon Steel Pipe EN10305-2 For Hydraulic Steel Tubing E155 E195 E235 E275 E355


    Size range: O.D.:6-420mm W.T.:1-50mm L:max12000mm

    Applications: for auto industry/machinery use/oil cylinder tube/motorcycle shock absorber/auto shock absorber/inner cylinder/telescopic cylinders/jack lifting system/hydraulic cylinders

    Appearance:
    The internal and external surface finish of the tubes is smooth, while the Weld Seam is somehow not visible or tangible.
    The ID surface with roughness Ra≤4μm, the best ID smoothness we could reach Ra≤0.8μm
    The inner surface can be measured and reported if this is requested by the purchaser before PO.

    Supplying Steel Grade:
    E155, E195, E235 E275, E355

    Delivery Condition:
    +C, +LC, + SR, +A, +N

    Production Method:
    DOM, ERW+ cold drawn

    Designation Symbol Description
    Cold drawn / hard +C Without thermal processing, after the process of cold drawing is finished
    Cold drawn / soft +LC After final thermal processing, appropriate drawing
    Cold drawn and annealed +SR After the final cold drawing process and annealing thermal processing in a controlled atmosphere
    Annealed +A After the final cold drawing process, the pipes are annealed in a controlled atmosphere
    Normalized +N After the final cold drawing process, the pipes are normalized in a controlled atmosphere

    Mechanical properties in room temperature

    Steel grade Maximum values depending on the delivery condition
    +C +LC +SR +A +N
    Steel symbol Rm MPa A % Rm MPa A % Rm MPa ReH Mpa A % Rm MPa A % Rm MPa ReH Mpa A %
    E155 400 6 350 10 350 245 18 260 28 270 do 410 155 28
    E195 420 6 370 10 370 260 18 290 28 300 do 440 195 28
    E235 490 6 440 10 440 325 14 315 25 340 do 480 235 25
    E275 560 5 510 8 510 375 12 390 21 510 do 550 275 21
    E355 640 4 590 6 590 435 10 450 22 490 do 630 355 22

    Chemical composition (ladle analysis)

    Steel grade % of the mass
    Steel symbol C max Si max Mn max P max S max
    E155 0,11 0,35 0,70 0,025 0,025
    E195 0,15 0,35 0,70 0,025 0,025
    E235 0,17 0,35 1,20 0,025 0,025
    E275 0,21 0,35 1,40 0,025 0,025
    E355 0,22 0,35 1,60 0,025 0,025

     

    DOM is a process that is applied to tubing after it is initially constructed.It is refferred to as Seamless ,It can be said that do seamless process method on ERW tubes,So the tubes will have a high strength ,high quality .Material form E155 E195 E235 E275 E355 1020 1026 and so on .DOM tubing is commonly use in auto parts .

     

    Steel Grade and Chemical Compositions

    Steel Grade C Si Mn P S
    Steel Name Steel Number max max max max max
    E155 1.0033 0.11 0.35 0.70 0.025 0.025
    E195 1.0034 0.15 0.35 0.70 0.025 0.025
    E235 1.0308 0.17 0.35 1.20 0.025 0.025
    E275 1.0225 0.21 0.35 1.40 0.025 0.025
    E355 1.0580 0.22 0.35 1.60 0.025 0.025

     

    aRm: tensile strength; ReH: upper yield strength; A: elongation after fracture
    b 1Mpa=1N/mm2
    c Depending on the degree of cold work in the finishing pass the yield strength may nearly be as high as the tensile strength.
    For calculation purposes the following relations are recommended:
    for delivery condition +C: ReH ≥0.8 Rm
    for delivery condition +LC: ReH ≥0.7 Rm
    d For calculation purposes the following relation is recommended:ReH≥0.5Rm

     

    Production Process:
    Cold rolling by Cold pilger machine and Cold rolling machine
    Size: 20-350mm


    1. Standard:
    EN10305-2 Cold Drawn Precision Seamless Steel Pipes


    2. Steel Grade:
    E155,E195,E235,E275,E355, other materials upon agreement with customers.


    3. Production method:
    Cold drawn on the welded steel tubes, to reach high accuracy on the OD and WT tolerance


    4. Size range:
    O.D.:20-350mm W.T.:1-35mm L:max12000mm


    5. Packing:
    In Hexagonal Bundles, with anti-rust oil protection, with seaworthy packing


    6. Deliver condition:
    1). +C No heat treatment after the final cold drawing process
    2). +LC After the final heat treatment there is a suitable drawing pass
    3). +SR After the final cold drawing process there is a stress relieve heat treatment in a controlled atmosphere
    4). +A After the final cold drawing process the tubes are annealed in a controlled atmosphere
    5). +N After the final cold drawing operation the tubes are normalized in a controlled atmosphere

     

    Precision camshaft Tube Small Outside Diameter Welded Pipe 26MnB5 34MnB5 For Cam

     

    Production Method:
    The cold drawn welded tube is produced by drawing ERW (electric resistance welded tube).During this process the sizing (wall thickness, inside and outside diameter), as well as weld integrity and surface finish is closely controlled to produce tube of the required size and mechanical property characteristics.

    Main Date
    Material: E355
    Other Aviliable Material: E155 E195 E235 E275
    Outer Diameter Range: 10-50mm
    Wall Thickness Range: 1.5-8mm
    t/D ≥ 0.2(Normal: t/D=0.1)
    Standard: En10305-2
    Process: Cold Drawn, Cold Rolling

    Delivery Condition:
    1) +C No heat treatment after the final cold drawing process.
    2) +LC After the final heat treatment there is a suitable drawing pass.
    3) +SR After the final cold drawing process there is a stress relieve heat treatment in a controlled atmosphere.
    4) +A After the final cold drawing process the tubes are annealed in a controlled atmosphere.
    5) +N After the final cold drawing operation the tubes are normalized in a controlled atmosphere.

    Advantage (compare with seamless cold drawn tube)
    Better shape
    Improved quality surface
    Tight Excentricity and wall thickness tolerances (the eccentric
    Tube more safety
    Good toughness at low temperature
    USA Market: 90% of the cylinder in the USA market are produced with welded tubes
    Cost fix Lengths More Cheaper

    DOM E155 E195 E235 E275 E355 Erw Carbon Steel Pipe , Seamless Hydraulic Tubing

     

    Contact Details
    Jiangsu Hongbao Group Co., Ltd.

    Contact Person: angela zhu

    Send your inquiry directly to us (0 / 3000)

    Other Products