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30 inch seamless steel pipe

Seamless steel pipes are perforated from whole round steel, and steel pipes without welds on the surface are called seamless steel pipes. According to the production method, seamless steel pipes can be divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extruded seamless steel pipes, and top pipes.

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We provide seamless mechanical steel tubing products designed to thrive in demanding, high-stress applications. You find these seamless steel pipes in automotive components where performance depends on reliability and quality. In addition, you find your seamless mechanical steel tubing for industrial applications – ranging from bearings to cylinders and gears – where toughness is essential for functionality. Oil and gas exploration is another common use for our seamless mechanical tubing, where durability and component life below the Earth’s surface is paramount.

 

We produce seamless mechanical steel tubing, in the hot-rolled condition, close to your finished part size, which makes it very competitive compared to other forging or machining processes. You may also purchase seamless steel pipes in sizes recommended to clean up at finished part dimensions, which allows for optimum material utilization. Our size range ranks among industry leaders, from 3.0″ to 13″ (76 mm – 330 mm) with outer diameter-to-wall ratio from 4:1 to 14:1.

 

We focus on continually improving the quality of seamless steel pipes. With recent investments in an intermediate finishing line, water-blast descaling process, and continuous induction thermal treat facility, we offer quality, customized solutions. Our approach to manufacturing integrates our melting, rolling, piercing and finishing operations, helping to ensure quality control from start to finish.

 

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
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