Carbon Steel Seamless Pipe/Tube
Carbon Steel Seamless Pipes/Tubes are available in a variety of grades and thicknesses and are designed to withstand high-pressure and high-temperature environments. Their superior strength, uniform structure, and reliable pressure resistance make them ideal for critical applications in industries such as oil and gas, construction, petrochemical, and heavy machinery.
Properties of Carbon Steel Seamless Pipe/ Tube
Fatigue Resistance
Carbon Steel Seamless Pipes/Tubes offer excellent fatigue resistance due to their uniform structure and absence of welded seams. Without weld-related discontinuities, they minimize stress concentration and are better able to endure repeated stress cycles and pressure fluctuations without cracking or failure.
High Pressure Resistance
Carbon Steel Seamless Pipes/Tubes are designed to withstand high internal pressures due to their continuous, weld-free structure. The absence of welded seams eliminates potential weak points, ensuring enhanced pressure containment and making them ideal for demanding applications such as oil and gas transmission, boilers, and high-pressure systems.
Temperature Resistance
Carbon Steel Seamless Pipes/Tubes maintain their structural integrity and mechanical performance under both high and low temperatures. This makes them ideal for use in boilers, heat exchangers, and environments subject to temperature fluctuations.
Available Size of Carbon Steel Seamless Pipe/Tube-API SPEC
| API SPEC 5CT | |||
| Product Name | Executive Standard | Dimension (mm) | Steel Code/ Steel Grade |
| Casing | API 5CT | Ø114-219 x WT 5.2-22.2 | J55, K55, N80, L80, P110 |
| Tubing | API 5CT | Ø48.3-114.3 x WT 3.2-16 | J55, K55, N80, L80, P110 |
| API SPEC 5L | |||
| Product Name | Executive Standard | Dimension (mm) | Steel Code/ Steel Grade |
| Line Pipe | API 5L | Ø10.3-1200 x WT 1.0-120 | A, B, X42, X46, X52, X60, X70, X80, PSL1 / PSL2 |
Available Size of Carbon Steel Seamless Pipe/Tube-ASTM/ASME
| ASTM / ASME | |||
| Product Name | Executive Standard | Dimension (mm) | Steel Code/ Steel Grade |
| Black and Hot-Dip Zinc-Coated Seamless Steel Pipes | ASTM A53 | Ø10.3-1200 x WT 1.0-150 | Gr.A, Gr.B, Gr.C |
| Seamless Carbon Steel Pipes for High Temperature Service | ASTM A106 | Ø10.3-1200 x WT 1.0-150 | Gr.B, Gr.C |
| Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes | ASTM A179 | Ø10.3-426 x WT 1.0-36 | Low Carbon Steel |
| Seamless Carbon Steel Boiler Tubes for High Pressure | ASTM A192 | Ø10.3-426 x WT 1.0-36 | Low Carbon Steel |
| Seamless Cold-Drawn Intermediate Alloy Steel Heat-Exchanger and Condenser Tubes | ASTM A199 | Ø10.3-426 x WT 1.0-36 | T5, T22 |
| Seamless Medium-Carbon Steel Boiler and Superheater Tubes | ASTM A210 | Ø10.3-426 x WT 1.0-36 | A1, C |
| Seamless Ferritic and Austenitic Alloy Steel Boiler, Superheater and Heat-Exchanger Tubes | ASTM A213 | Ø10.3-426 x WT 1.0-36 | T5, T9, T11, T12, T22, T91 |
| Seamless Carbon and Alloy Steel for Mechanical Tubing | ASTM A333 | Ø6.35-1066.8 x WT SCH20-XXS | Gr.1, Gr.3, Gr.6 |
| Seamless Carbon Steel Pipes for Low Temperature Use | ASTM A334 | Ø6.35-101.6 x WT SCH20-SCH80 | Gr.1, Gr.6 |
| Seamless Steel Pipes in Large Calibers for Gas Cylinders | ASTM A519 | Ø559-914 x WT 12-50 | - |
| Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes | ASTM A556 | Ø10.3-426 x WT 1.0-36 | A2, B2 |
Available Size of Carbon Steel Seamless Pipe/Tube-DIN
| DIN | |||
| Product Name | Executive Standard | Dimension (mm) | Steel Code/ Steel Grade |
| Seamless Steel Tubes for Elevated Temperature | DIN 17175 | Ø10-762 x WT 1.0-120 | St35.8, St45.8, 10CrMo910, 15Mo3, 13CrMo44, STPL340, STB410, STB510, WB36 |
| Seamless Circular Tubes of Non-Alloy Steels with Special Quality Requirements | DIN 1629 | Ø13.5-762 x WT 1.8-120 | St37.0, St44.0, St52.0 |
| Seamless Steel Tubes | DIN 2440 | Ø13.5-165.1 x WT 1.8-4.85 | St33.2 |
| Seamless Steel Pipes for Structural Purpose | DIN 2393 | Ø16-426 x WT 1.0-36 | RSt34-2, RSt37-2, RSt44-2, St52 |
Available Size of Carbon Steel Seamless Pipe/Tube-BS
| BS | |||
| Product Name | Executive Standard | Dimension (mm) | Steel Code/ Steel Grade |
| Seamless Steel Tubes for Machine Structure | BS 970 | Ø10-762 x WT 1.0-120 | Carbon Steel |
| Seamless Steel Tubes for Boiler and Heat Exchangers | BS 3059 | Ø10-762 x WT 1.0-120 | 360, 410, 440, 460, 490 |
Available Size of Carbon Steel Seamless Pipe/Tube-EN
| EN | |||
| Product Name | Executive Standard | Dimension (mm) | Steel Code/ Steel Grade |
| Seamless Steel Pipes for Structural Purpose | EN 10210-1 | Ø 21.3-914 x WT 1.0-25.5 | S355NH |
Packaging of Carbon Steel Seamless Pipe/Tube
| Surface Protection | Bundling and Cushioning | Packaging and Securing |
| Each Carbon Steel Seamless Pipe/Tube is individually wrapped in protective materials, such as plastic film or foam wrap, to prevent scratches, dust, and surface abrasion during handling and transportation. | Carbon Steel Seamless Pipes/Tubes are grouped and bundled using stretch film, strapping, or shrink wrap. Corner guards or padding are often added between tubes/ pipes to prevent movement and impact damage. | The packaged Carbon Steel Seamless Pipes/Tubes are secured in sturdy steel boxes, wooden crates, or pearl cotton packaging to prevent surface contact and ensure structural stability during loading and international transportation. |
Application of Pipe/ Tube
Construction
Carbon Steel Seamless Pipes/Tubes are widely used in construction and infrastructure projects for applications such as piling, structural supports, and bridge components. Their high tensile strength and impact resistance make them ideal choices for demanding environments requiring enhanced load-bearing capacity and durability.
Machinery Engineering
Carbon Steel Seamless Pipes/Tubes are widely used to manufacture precision components such as rollers, cylinders, shafts, and hydraulic systems. Their weld-free structure improves fatigue resistance, while their high strength and excellent machinability make them highly reliable in demanding mechanical applications.
Oil & Gas Transportation
Carbon Steel Seamless Pipes/Tubes are extensively used in the oil and gas industry for the transportation of crude oil, natural gas, and other energy resources. Their seamless construction provides uniform strength and significantly reduces the risk of leakage associated with welded joints, making them highly reliable for high-pressure and high-temperature environments.
Petrochemical & Chemical Industry
Carbon Steel Seamless Pipes/Tubes are widely used in petrochemical and chemical plants for conveying chemicals, steam, and various process fluids. Their seamless construction reduces the risk of leakage, ensuring process safety and operational efficiency in demanding industrial environments.
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