Products

Seamless Steel Pipe
Seamless Steel Pipe

    Seamless Steel Pipe/Tube (SMLS Pipe/Tube)

     
    Types of seamless pipe
    Large diameter pipe 
    Precision pipe
    Thin wall pipe
    Thickness wall pipe
    Caliber of seamless steel pipe
      

    Sizes of seamless pipe
    Out diameter: 1/2"-36" (21.3mm-914.4mm)
    Thickness: 2.11mm-60mm ( SCH10, SCH20, SCH40, SCH80, STD, SCH120, SCH160, XXS)

     

    Materials of seamless pipeA106 and A53 comparison
    ASTM
    ASTM A53 GR.B ASTM A106 GR.B / ASTM A179 / ASTM A192 / ASTM A210 / ASTM A210 / ASTM A213
    ASTM A312  TP304, TP316 / ASTM A333 GR.6 / ASTM A335 P11, P22, P91 / ASTM A519  4140, 4130 / ASTM A789
    API  
    API 5L GR.B / X42 / X46 / X52 / X56 / X60 / X65 / X70
    DIN/EN
    DN 17175 ST35, ST52 /EN10216-2 / DIN 2391 ST35, ST52 /EN10305-1 / DIN 1629/EN10216-1

     

    Process of Seamless Pipe
     
    Hot rolled
    Continuous rolling is the most advanced technology for producing hot rolled seamless steel pipe of modern industry.It creates high quality seamless steel pipe efficiently, even for high alloy pipe and light wall pipe. Hot rolling process can significantly reduce energy consumption and reduce costs. High metal plasticity during hot rolling.
    Size Range: 2″(60.3mm) to 20″(508mm)
    Delivery Condition: As roll/ Normalized
    Cold drawn
    Used for producing small size pipe. There are several times of cold forming process, so yield strength and tensile strength values increase, while elongation and toughness values decrease. A heat treatment must to be applied for each cold forming operation. cold drawn pipe maintains precise dimension, smooth surface and shining appearance.
    Size Range: 1/2″(21.3mm) to 1-1/2″(48.3mm)
    Delivery Condition: Cold Drawn and Stress Relief, Annealed, Normalized

     
    Cold rolled
    As another type of cold forming process, cold rolled mill also works at room temperature to stretch large size pipe to required small size. Comparing cold drawn mill ,it takes pilger mill with fewer cold forming processes and lower productivity, but come out the pie in much precise size and shinning apperance.
    Size Range: 1/2″(21.3mm) to 1-1/2″(48.3mm)
    Delivery Condition: Cold roll, Annealed, Normalized

     



    Application of seamless pipe
     

    Chilled Water
    SteamPipelines
    Heat Exchanger
    Boiler Manufacturing
    Cylinder
    Hydraulic
    Construction
    Structure
    Machinery Parts
    Mechnical
    Industrial
    Drain/sewage
    Dredging
    Irrigation
    Shipbuilding
    Offshore Rigs
    Oilfield Equipment
    Well Borehole

     
    Pipline


    industry we serve



    Quality Inspection of seamless pipe
     
    Outside diameter, ellipse  inspection
    Calipers, vernier caliper should be taken. The caliper should be perpendicular to the axis of the steel pipe in checking, measuring the maximum and the minimum point when the pipe rotated slowly. Founding the outer diameter of large or small, you should mark it in time.
    Wall thickness inspection
    Micrometer is the main tool that is adopted. When you check, left hand holds the micrometer stand, with right hand rotation induced wheel, and the wire rod should be coincident with the diameter of the measuring point. Once found that the wall thickness is not qualified, it should be marked in time.
    Length inspection
    The steel tape can be measured directly by metallic tape.
    Bending inspection
    With the tools of level, feeler and line.
    End profile inspection
    At two ends of the steel tube should be cut into specified angle and remove burrs. The method of inspection adopts angle square and general use tube end groove clamp in the field.
    Non-destructive test
    The common inspection methods of NDT are visual testing (VT), ultrasonic testing (UT), radiographic testing (RT), hydrostatic testing. Anson International co, ltd uses ultrasonic testing (UT) and hydrostatic testing to inspect its line pipes.
    Out Diameter                                                                    Wall Thickness
    1/2" (21.3mm) ~ 36" (914.4mm)                                                             2.11mm ~ 60mm                   
                                                                                         
    NOMINAL  PIPE  SIZE OD(mm) NOMINAL WALL THICKNESS
    DN NB(inch) ASME SCH10 SCH20 SCH30 STD SCH40 SCH60 XS SCH80 SCH100 SCH120 SCH140 SCH160 XXS
    15 1/2" 21.3
     
    2.11   2.41 2.77 2.77   3.73 3.73       4.78 7.47
    20 3/4" 26.7 2.11   2.41 2.87 2.87   3.91 3.91       5.56 7.82
    25 1" 33.4 2.77   2.9 3.38 3.38   4.55 4.55       6.35 9.09
    32 1.1/4" 42.2 2.77   2.97 3.56 3.56   4.85 4.85       6.35 9.7
    40 1.1/2" 48.3 2.77   3.18 3.68 3.68   5.08 5.08       7.14 10.15
    50 2" 60.3 2.77   3.18 3.91 3.91   5.54 5.54       8.74 11.07
    65 2.1/2" 73 3.05   4.78 5.16 5.16   7.01 7.01       9.53 14.02
    80 3" 88.9 3.05   4.78 5.49 5.49   7.62 7.62       11.13 15.25
    90 3.1/2" 101.6 3.05   4.78 5.74 5.74   8.08 8.08          
    100 4" 114.3 3.05   4.78 6.02 6.02   8.56 8.56   11.13   13.49 17.12
    125 5" 141.3 3.4     6.55 6.55   9.53 9.53   12.7   15.88 19.05
    150 6" 168.3 3.4     7.11 7.11   10.97 10.97   14.27   18.26 21.95
    200 8" 219.1 3.76 6.35 7.04 8.18 8.18 10.31 12.7 12.7 15.09 18.26 20.62 23.01 22.23
    250 10" 273 4.19 6.35 7.8 9.27 9.27 12.7 12.7 15.09 18.26 21.44 25.4 28.58 25.4
    300 12" 323.8 4.57 6.35 8.38 9.53 10.31 14.27 12.7 17.48 21.44 25.4 28.58 33.32 25.4
    350 14" 355.6 6.35 7.92 9.53 9.53 11.13 15.09 12.7 19.05 23.83 27.79 31.75 35.71  
    400 16" 406.4 6.35 7.92 9.53 9.53 12.7 16.66 12.7 21.44 26.19 30.96 36.53 40.19  
    450 18" 457.2 6.35 7.92 11.13 9.53 14.27 19.05 12.7 23.83 39.36 34.93 39.67 45.24  
    500 20" 508 6.35 9.53 12.7 9.53 15.09 20.62 12.7 26.19 32.54 38.1 44.45 50.01  
    550 22" 558.8 6.35 9.53 12.7 9.53   22.23 12.7 28.58 34.93 41.28 47.63 53.98  
    600 24" 609.6 6.35 9.53 14.27 9.53 17.48 24.61 12.7 30.96 38.89 46.02 52.37 59.54  
    650 26" 660.4 7.92 12.7   9.53     12.7            
    700 28" 711.2 7.92 12.7 15.88 9.53     12.7            
    750 30" 762 7.92 12.7 15.88 9.53     12.7            
    800 32" 812.8 7.92 12.7 15.88 9.53 17.48   12.7            
    850 34" 863.6 7.92 12.7 15.88 9.53 17.48   12.7            
    900 36" 914.4 7.92 12.7 15.88 9.53 19.05   12.7            


     
    ASTM A106 GR.B seamless steel pipeASTM A53 GR.B seamless steel pipeASTM A179 seamless steel pipeASTM A192 seamless steel pipeASTM A210 seamless steel pipeASTM A210 seamless steel pipeAPI 5L GR.B seamless steel pipeASTM A213 seamless steel pipeDN 17175 ST35 seamless steel pipeEN10216-2 seamless steel pipe

Know more about this product price, catalogue, mill test certificate,  please inquiry to: sales@nan-steel.com

Contact