Seamless steel pipe
Seamless steel pipe (SMLS) is formed by drawing a solid billet over a piercing rod to create the hollow shell, without welding or seam. It is suitable for bending and flanging. The most advantage is increasing the ability of withstanding higher pressure. So it is widely used for boiler and pressure vessel, automotive area, oil well, and equipment components.
Abter Company stock & supply seamless A53B, A106B/C & API 5LB carbon steel pipes from a wide range of quality manufacturers, helping you get the materials you need to complete your project on time and on budget.
Seamless Steel Pipe Industrial Applications
Carbon steel seamless pipe is used in a range of applications in all different industries, including petrochemical, environmental, energy, and more. Thanks to more than 100 years of combined experience and vast knowledge across multiple industries, we can help match you with the right product for your unique application. Our friendly, knowledgeable customer service representatives will listen to your needs and can offer suggestions to get you products that meet your requirements.
Simply put, we have the right grade and size to meet your special requirements and quality standards.
Seamless steel pipe can be cut, threaded or grooved. And the coating method includes black / red lacquer, varnish painting, hot dip galvanization, etc.Just tell us about your unique project needs, and we’ll ensure you get the precise seamless carbon pipe you demand.
Sizes:
Out diameter: 1/4″-36″
Wall thickness:1.25mm-50mm
Length:3m-12m
Style: Hydraulic pipe , Boiler Tube ,Fluid Pipe ,Fire Pipe ,Line Pipe ,Structure Tube
| NPS | O.D | ANSI B36.10 B36.19 Wall Thickness | ||||||||||||||
| mm | in | mm | Sch5S | Sch10S | Sch10 | Sch20 | Sch30 | Sch40S | STD | Sch40 | Sch60 | Sch80 | XS | Sch80S | Sch100 | XXS |
| 8 | 1/4 | 13.72 | – | 1.65 | – | – | – | 1.73 | 1.73 | 1.73 | – | 3.02 | 3.02 | 3.02 | – | – |
| 10 | 3/8 | 17.14 | – | 1.65 | – | – | – | 2.31 | 2.31 | 2.31 | – | 3.2 | 3.2 | 3.2 | – | – |
| 15 | 1/2 | 21.34 | 1.65 | 2.11 | – | – | – | 2.77 | 2.77 | 2.77 | – | 3.73 | 3.73 | 3.73 | – | 7.47 |
| 20 | 3/4 | 26.67 | 1.65 | 2.11 | – | – | – | 2.87 | 2.87 | 2.87 | – | 3.91 | 3.91 | 3.91 | – | 7.82 |
| 25 | 1 | 33.4 | 1.65 | 2.77 | – | – | – | 3.38 | 3.38 | 3.38 | – | 4.55 | 4.55 | 4.55 | – | 9.09 |
| 32 | 1 1/4 | 42.16 | 1.65 | 2.77 | – | – | – | 3.56 | 3.56 | 3.56 | – | 4.85 | 4.85 | 4.85 | – | 9.7 |
| 40 | 1 1/2 | 48.26 | 1.65 | 2.77 | – | – | – | 3.68 | 3.68 | 3.68 | – | 5.08 | 5.08 | 5.08 | – | 10.16 |
| 50 | 2 | 60.32 | 1.65 | 2.77 | – | – | – | 3.91 | 3.91 | 3.91 | – | 5.54 | 5.54 | 5.54 | – | 11.07 |
| 65 | 2 1/2 | 73.02 | 2.11 | 3.05 | – | – | – | 5.16 | 5.16 | 5.16 | – | 7.01 | 7.01 | 7.01 | – | 14.02 |
| 80 | 3 | 88.9 | 2.11 | 3.05 | – | – | – | 5.49 | 5.49 | 5.49 | – | 7.62 | 7.62 | 7.62 | – | 15.24 |
| 90 | 31/2 | 101.6 | 2.11 | 3.05 | – | – | – | 5.74 | 5.74 | 5.74 | – | 8.08 | 8.08 | 8.08 | – | – |
| 100 | 4 | 114.3 | 2.11 | 3.05 | – | – | – | 6.02 | 6.02 | 6.02 | – | 8.56 | 8.56 | 8.56 | – | 17.12 |
| 125 | 5 | 141.3 | 2.77 | 3.4 | – | – | – | 6.55 | 6.55 | 6.55 | – | 9.53 | 9.53 | 9.53 | – | 19.05 |
| 150 | 6 | 168.28 | 2.77 | 3.4 | – | – | – | 7.11 | 7.11 | 7.11 | – | 10.97 | 10.97 | 10.97 | – | 21.94 |
| 200 | 8 | 219.08 | 2.77 | 3.4 | – | 6.35 | 7.04 | 8.18 | 8.18 | 8.18 | 10.31 | 12.7 | 12.7 | 12.7 | 15.09 | 22.22 |
| 250 | 10 | 273.05 | 3.4 | 3.76 | – | 6.35 | 7.8 | 9.27 | 9.27 | 9.27 | 12.7 | 12.7 | 12.7 | 15.09 | 18.26 | 25.4 |
| 300 | 12 | 323.85 | 3.96 | 4.57 | – | 6.35 | 8.38 | 9.52 | 9.52 | 10.3 | 14.27 | 12.7 | 12.7 | 17.48 | 21.44 | – |
| 350 | 14 | 355.6 | 3.96 | 4.78 | 6.35 | 7.92 | 9.52 | *9.52 | 9.52 | 11.13 | 15.09 | 12.7 | 12.7 | 19.05 | 23.83 | – |
| 400 | 16 | 406.4 | 4.19 | 4.78 | 6.35 | 7.92 | 9.52 | *9.52 | 9.52 | 12.7 | 16.66 | 12.7 | 12.7 | 21.44 | 26.19 | – |
| 450 | 18 | 457.2 | 4.19 | 4.78 | 6.35 | 7.92 | 11.12 | *9.52 | 9.52 | 14.27 | 19.05 | 12.7 | 12.7 | 23.82 | 29.36 | – |
| 500 | 20 | 508 | 4.78 | 5.54 | 6.35 | 7.92 | 12.7 | *9.52 | 9.52 | 15.09 | 20.62 | 12.7 | 12.7 | 26.19 | 32.54 | – |
| 550 | 22 | 558.8 | 4.78 | 5.54 | 6.35 | 7.92 | 12.7 | *9.52 | 9.52 | – | 22.22 | 12.7 | 12.7 | 28.58 | 34.92 | – |
| 600 | 24 | 609.6 | 5.54 | 6.35 | 6.35 | 7.92 | 14.27 | *9.52 | 9.52 | 17.48 | 24.61 | 12.7 | 12.7 | 30.96 | 38.89 | – |
| 650 | 26 | 660.4 | – | *7.92 | 7.92 | 12.7 | – | *9.52 | 9.52 | – | – | 12.7 | 12.7 | – | – | – |
| 700 | 28 | 711.2 | – | *7.92 | 7.92 | 12.7 | 15.88 | *9.52 | 9.52 | – | – | 12.7 | 12.7 | – | – | – |
| 750 | 30 | 762 | 6.35 | *7.92 | 7.92 | 12.7 | 15.88 | *9.52 | 9.52 | – | – | 12.7 | 12.7 | – | – | – |
| 800 | 32 | 812 | – | *7.92 | 7.92 | 12.7 | 15.88 | *9.52 | 9.52 | 17.48 | – | 12.7 | 12.7 | – | – | – |
| 850 | 34 | 863.6 | – | *7.92 | 7.92 | 12.7 | 15.88 | *9.52 | 9.52 | 17.48 | – | 12.7 | 12.7 | – | – | – |
| 900 | 36 | 914.4 | – | *7.92 | 7.92 | 12.7 | 15.88 | *9.52 | 9.52 | 19.05 | – | 12.7 | 12.7 | – | – | – |
| 950 | 38 | 965.2 | – | *7.92 | – | – | – | *9.52 | 9.52 | – | – | 12.7 | 12.7 | – | – | – |
| 1000 | 40 | 1016 | – | *7.92 | – | – | – | *9.52 | 9.52 | – | – | 12.7 | 12.7 | – | – | – |
| 1050 | 42 | 1066.8 | – | *7.92 | – | – | – | *9.52 | 9.52 | – | – | 12.7 | 12.7 | – | – | – |
| 1100 | 44 | 1117.6 | – | *7.92 | – | – | – | *9.52 | 9.52 | – | – | 12.7 | 12.7 | – | – | – |
| 1150 | 46 | 1168.4 | – | *7.92 | – | – | – | *9.52 | 9.52 | – | – | 12.7 | 12.7 | – | – | – |
| 1200 | 48 | 1219.2 | – | *7.92 | – | – | – | *9.52 | 9.52 | – | – | 12.7 | 12.7 | – | – | – |
| 1300 | 52 | 1320.8 | – | – | – | – | – | – | 9.52 | – | – | – | 12.7 | – | – | – |
| 1350 | 54 | 1371.6 | – | – | – | – | – | – | 9.52 | – | – | – | 12.7 | – | – | – |
| 1400 | 56 | 1422.4 | – | – | – | – | – | – | 9.52 | – | – | – | 12.7 | – | – | – |
| 1500 | 60 | 1524 | – | – | – | – | – | – | 9.52 | – | – | – | 12.7 | – | – | |
| 1600 | 64 | 1625.6 | – | – | – | – | – | – | 9.52 | – | – | – | 12.7 | – | – | |
| 1700 | 68 | 1727.2 | – | – | – | – | – | – | 9.52 | – | – | – | 12.7 | – | – | |
| 1800 | 72 | 1828.8 | – | – | – | – | – | – | 9.52 | – | – | – | 12.7 | – | – | |
| 1900 | 76 | 1930.4 | – | – | – | – | – | – | 9.52 | – | – | – | 12.7 | – | – | |
| 2000 | 80 | 2032 | – | – | – | – | – | – | 9.52 | – | – | – | 12.7 | – | – | |
| Executive Standard | Grade | Product Name |
| ASTM A53 | A, B | Black and Hot-Dipped Zinc-Coated Steel Pipes Welded and Seamless |
| ASTM A106 | A, B | Seamless Carbon Steel for High Temperature Service |
| ASTM A179 | Low Carbon Steel | Seamless Cold-Drawn Low-Carbon Steel Heat Exchanger and Condenser Tubes |
| ASTM A192 | Low Carbon Steel | Seamless Carbon Steel Boiler Tubes for High Pressure |
| ASTM A312 | TP304/304L, TP316/316L | Seamless Steel Pipe for Stainless Materials |
| ASTM A333 | Gr.6 | Seamless and Welded Steel Pipe for Low-Temperature Service |
| ASTM A335 | P5, P11, P12, P22 | Seamless Ferritic Alloy Steel Pipe for High-Temperature Service |
| ASTM A210 | A1, C | Seamless Medium-Carbon and Alloy Steel Boiler and Superheater Tubes |
| ASTM A213 | T5, T11, T12, T22 | Seamless Ferritic and Austenitic Alloy Steel Boiler, Superheater and Heat-Exchanger Tubes |
| ASTM A519 | 4130,4140 | Seamless Carbon and Alloy Steel for Mechanical Tubing |
API Standard for seamless steel pipe
| Executive Standard | Grade | Product Name |
| API Spec 5CT | J55, K55, N80, L80,C90, C95, T95, P110, M65 | Spectification for Casing and Tubing |
| API Spec 5L | A,B X42, X46, X52, X56, X60, X65,. X70 | Specification for Line Pipe |
DIN / EN Standard for seamless steel pipe
| Executive Standard | Grade | Product Name |
| DN 17175/EN10216-2 | ST35, ST45, ST52, 13CrMo44 | Seamless Steel Tube for Elevated Temperature |
| DIN 2391/EN10305-1 | St35, St45, St52 | Cold Drawn Seamless Precision Pipe |
| DIN 1629/EN10216-1 | St37, St45, St52 | Seamless Circular unalloyed Steel Tubes Subject to Special Requirments |
How seamless tubes are manufactured？
The process begins with solid steel rounds, or billets, being cut to a specified length and sent through a walking-beam reheat furnace, where temperatures reach nearly 2,300°F. the yellow rounds are turned into a tube shell in mere seconds in the rotary piercing mill as the preheated billets are cross-rolled between two barrel-shaped rolls at a high speed. the seamless shells enter mandrel mill, where they are rolled over a retained mandrel to provide the needed OD size and wall thickness for the next process. the process is carefully monitored using a state-of-the-art hot-wall measuring system. the shells are then reheated for final forming in a 24-stand stretch-reducing mill, where outside diameters are formed to customers’ exacting specifications. Wall thickness is again verified using a hot-wall measuring system.
after being rotated and advanced on the walking-beam cooling bed, the pipes are batch cut and transferred to an in-process storage area, where they are handled by computer-controlled gantry cranes.
Seamless steel pipe
| Pipe types | Pipe sizes(mm) | Tolerances |
| Hot rolled | OD<50 | ±0.50mm |
| OD≥50 | ±1% | |
| WT<4 | ±12.5% | |
| WT 4～20 | +15%, -12.5% | |
| WT>20 | ±12.5% | |
| Cold drawn | OD 6～10 | ±0.20mm |
| OD 10～30 | ±0.40mm | |
| OD 30～50 | ±0.45 | |
| OD>50 | ±1% | |
| WT≤1 | ±0.15mm | |
| WT 1～3 | +15%, -10% | |
| WT >3 | +12.5%, -10% |
Application: Water underground, Sewage Treatment, Steel scaffolding, Transporting oil & gas , Boiler and condenser tubes
High-pressure applications ,Chemical processing
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Oil & Gas Industries |
Petrochemical Industries |
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| Engineering Industries | Chemical Industries |
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| Sugar Industries | Power Generation Industries |
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| Fertilizers Industries | Food Processing Industries |
Product Name: seamless pipe, seamless steel pipe, seamless carbon steel pipe, carbon seamless steel pipe,Seamless Line pipe Application: For converying gas, water & oil for Fluids Transmission Size: OD: 10.3-1219.2mm WT: 1.65-60mm LENGTH: 5.8/6/11.8/12m
Structural seamless steel pipes are critical components in numerous industries due to their strength, durability, and versatility. These pipes are manufactured without seams, providing a uniform structure that can withstand high pressure and mechanical stress. This makes them suitable for mechanical and pressure applications and ordinary uses in steam, water, gas, and air lines. They are also ideal for welding and forming operations involving coiling, bending, and flanging, subject to certain qualifications.
Boiler Steel Pipes are critical components in many industrial applications, providing reliable performance under extreme conditions. By adhering to strict quality standards and understanding the key properties and classifications of these tubes, industries can ensure the safe and efficient operation of their thermal systems.
Seamless steel fluid pipes are vital components in many industrial systems, offering unmatched strength, durability, and reliability. By understanding their characteristics, manufacturing processes, materials, standards, and applications, industries can select the appropriate seamless pipes to ensure efficient and safe fluid transport.
Mechanical steel tubes are essential for a variety of industrial applications requiring high strength, precision, and durability. The choice of material—whether carbon steel, alloy steel, or stainless steel—depends on the specific requirements of the application, such as mechanical properties, corrosion resistance, and ease of machining.
JIS G3429 sets rigorous standards for seamless steel pipes used in high-pressure gas cylinders, ensuring they possess the necessary strength, toughness, and durability. By adhering to these standards, manufacturers can produce high-quality, reliable cylinders that safely store and transport gases under high pressure, meeting the demands of various industrial, medical, and safety applications.
