Products

Seamless Steel Pipe

Seamless Steel Pipe

    Seamless steel pipes are derived from solid steel that is in sheet or bar form and is formed into a solid round shape known as “billets” which are then heated and cast over a form such as a piercing rod to create a hollow tube or shell.

    Standards of seamless steel pipe 
    API SPEC 5L
    Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
    Line Pipes API 5L Ø10.3~1200 x WT1.0~120 A, B, X42, X46, X52, X60, X70, X80, PSL1 / PSL2
     
    API SPEC 5CT
    Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
    Casing API 5CT Ø114~219 x WT5.2~22.2 J55, K55, N80, L80, P110
    Tubing API 5CT Ø48.3~114.3 x WT3.2~16 J55, K55, N80, L80, P110
     
    ASTM / ASME
    Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
     Black and Hot-Dipped Zinc-Coated Seamless Steel Pipes ASTM A53 Ø10.3~1200 x WT1.0~150 Gr.A, Gr.B, Gr.C
    Seamless Carbon Steel Pipes for High Temperature Service ASTM A106 Ø10.3~1200 x WT1.0~150 Gr.B, Gr.C
    Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes ASTM A179 Ø10.3~426 x WT1.0~36 Low Carbon Steel
    Seamless Carbon Steel Boiler Tubes for High Pressure ASTM A192 Ø10.3~426 x WT1.0~36 Low Carbon Steel
    Seamless Cold-Drawn Intermediate Alloy Steel Heat-Exchanger and Condenser Tubes ASTM A199 Ø10.3~426 x 1.0~36 T5, T22
    Seamless Medium-Carbon Steel Boiler and Superheater Tubes ASTM A210 Ø10.3~426 x WT1.0~36 A1, C
    Seamless Ferritic & Austenitic Alloy Steel Boiler, Superheater & Heat-Exchanger Tubes ASTM A213 Ø10.3~426 x WT1.0~36 T5, T9, T11, T12, T22, T91
    Seamless Carbon and Alloy Steel for Mechanical Tubing ASTM A333 Ø1/4"~42" x WT SCH20~XXS Gr.1, Gr.3, Gr.6
    Seamless & Welded Carbon Steel Pipes and Alloy Steel Pipes for Low Temperature Use ASTM A334 Ø1/4"~4" x WT SCH20~SCH80 Gr.1, Gr.6
    Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes ASTM A556 Ø10.3~426 x WT1.0~36 A2, B2
     
    DIN
    Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
    Seamless Steel Tubes for Elevated Temperature DIN 17175 Ø10~762 x WT1.0~120 St35.8, St45.8, 10CrMo910, 15Mo3, 13CrMo44, STPL340, STB410, STB510, WB36
    Seamless Steel Tubes DIN 1629 / DIN 2391 Ø13.5~762 x WT1.8~120 St37.0, St44.0, St52.0, St52.3
    Seamless Steel Tubes DIN 2440 Ø13.5~165.1 x WT1.8~4.85 St33.2
    Seamless Steel Pipes for Structural Purpose DIN 2393 Ø16~426 x WT1.0~36 RSt34-2, RSt37-2, RSt44-2, St52
     
    BS
    Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
    Seamless Steel Tubes for Machine Structure BS 970 Ø10~762 x WT1.0~120 Carbon Steel
    Seamless Steel Tubes for Boiler and Heat Exchangers BS 3059 Ø10~762 x WT1.0~120 360, 410, 440, 460, 490

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

    Process of seamless steel pipe
    According to different manufacturing(mfg), seamless steel pipe can be divided into hot rolled pipe, cold rolled pipe, cold drawn pipe and extruded pipe.

    Hot Rolled Process for Seamless Steel Pipe

    Round Pipe Billet → Heating → Punching → Three-Roller Skew Rolling, Continuous Rolling or Extruding → Pipe Detaching → 
    Micro Tension Sizing or Reducing → Cooling → Straightening → Hydrostatic Test or Inspection → Marking → Warehousing

    Cold Drawn Process for Seamless Steel Pipe

    Round Pipe Billet → Heating → Punching → Pipe Head Treatment → Annealing → Acid Pickling → Coating Oil → Multi-pass Cold Drawing
    → Pipe Billet→ Heat Treatment → Straightening →Hydrostatic Test or Inspection → Marking → Warehousing

    Production equipments of all process
    Starting material
    Steel billets of various dimensions and grades,
    continuously cast or rolled

    Billet preparation
    Billet saws
    Furnace technology 
    Billet centering
    Piercing
    From the billet to the hollow

    Cross-rolling mills (cone type and barrel type piercing)
    Billet descaling
    3-roll piercing mills
    Hollow inside deoxidation
    Cooling and quick-change systems for piercing tools
    Elongating expanding
    From the hollow to the shell

    PQF® / MPM mill
    CPE/TPE mill / Push bench technology 
    Assel mills, Plug mills, Hot pilger mills
    Elongators
    Rotary Expanders
    Finish rolling
    From the shell to the tube

    Reheating furnace (gas fired/induction)
    High pressure water descaling unit 
    Sizing mill, Stretch-reducing mill
    FPS adjustable rolling stands
    Tube layer saws
    Finishing line
    From the rolling mill to the dispatch area




    Groove dressing machines for PQF® cartridges
    Stretch-reducing and sizing mill stands
    Products
    Seamless tubes of various dimensions


    Diameters: 
    21.3 mm to 914.4 mm 
    Wall thicknesses:
    2.11 mm to 60 mm

     
                                                                                   
    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 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
    United Arab Emirates
    Pipe, Generic: Size 24 in, SCH STD,Material A106 carbon steel, Grade B,
    Specification B16-25 THK B36, Bevelled Ends, Seamless Type


    Saudi Arabia
    14” Seamless pipe with 1” wall thickness, ASTM A53 GR.B


    Chile
    API 5L-Gr-B size 323.85 mm x10.31 mm x 12 meters Long PE


    Brazil
    3/8" PIPE ASME B36.10 BE SCH 40 SEAMLESS ASTM A106 GR.B – 6 meters


    Nigeria
    MATERIAL:Seamless Steel Tubes.  GRADE:A106 Gr B.                
    SIZES:1)  60.32mm OD X +/- 5.54mm WT                
     2)  168.3mm OD X +/- 7.11mm WT                 


    Morocco
    Seamless Steel Pipe API 5L Grade B sch 40 with 3PE Coated pipe in polyethylene
    - 400 m; size 8'' inch (DN200) ;OD=219,08mm ; WT=8,18mm ; Length=5,8M
    - 100 m; size 4'' inch (DN100)  ;OD=114,3mm ; WT=6,02mm ; Length=5,8M


    Malaysia
    Standard weight seamless Steel Pipes to ASTM -A53  Grade A Schedule 40.
    1. 150mm seamless pipes = 1792m
    2. 200mm seamless pipes = 11531m
    3. 250mm Seamless pipes = 9240m


    Singapore
    Pipe Carbon Steel API 5L Seamless Pipe, Schedule– 40, Size– 500mm, Length– 6m each




     

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