Carbon steel pipes and tubes, often known as CS pipes, are manufactured from steel ingots or solid round steels. These are perforated to form capillary tubes, which are subsequently hot-rolled, cold-rolled, or pulled. Carbon steel pipes are commonly used in heavy sectors such as infrastructure, ships, stills, and fertilizer equipment because of their strength and resilience to pressure. These pipes are critical for the steel pipe industry.
Types of Carbon Steel Pipes
Carbon steel is further classified as low-carbon steel, medium-carbon steel, and high-carbon steel, mostly based on the carbon content.
General Carbon Steel Pipe
These are manufactured of high-quality carbon-structured steel (10, 20, 30, 35, and 45), as well as low-alloy structural steel (16Mn and 5MnV). These pipes are used to transfer fluids as well as to manufacture mechanical items including automobile and tractor components.
Mild Steel (Low Carbon Steel):
Carbon Content: 0.04% – 0.30%
Properties: Good ductility, toughness, easy to process and weld.
Examples: Q195, Q215, Q235
Medium Carbon Steel:
Carbon Content: 0.30% – 0.60%
Properties: High strength and hardness, lower ductility and toughness.
Examples: 45# steel, 40Cr
High Carbon Steel:
Carbon Content: 0.60% – 2.00%
Properties: High strength and hardness, lower ductility and toughness, poor weldability.
Examples: 65Mn, T8, T10
Production Methods
Seamless steel pipes are made by hot rolling or cold drawing, providing great strength and tightness.
Welded steel pipes are made by rolling steel plates or strips into a cylindrical shape and joining the seams using resistance welding or submerged arc welding.
CS Pipe Specs and Standards
| Product Name | Executive Standard | Dimensions (mm) | Steel Grade |
| Black and hot-dip galvanized seamless steel pipe | ASTM A53 | 0.3 – 1200 x 1.0 – 150 | GR.A, GR.B, GR.C |
| High-temperature seamless carbon steel | ASTM A106 | 10.3 – 1200 x 1.0 – 150 | GR.B, GR.C |
| Seamless cold drawn mild steel heat exchanger and condenser tubes | ASTM A179 | 10.3 – 426 x 1.0 – 36 | Low-carbon steel |
| Seamless carbon steel boiler tubes for high pressure | ASTM A192 | 10.3 – 426 x 1.0 – 36 | Low-carbon steel |
| Seamless cold drawn intermediate alloy steel heat exchanger tubes | ASTM A199 | 10.3 – 426 x 1.0 – 36 | T5, T22 |
| Seamless medium carbon steel boiler and superheater tubes | ASTM A210 | 10.3 – 426 x 1.0 – 36 | A1, C |
| Seamless ferritic and austenitic alloy steel tubes | ASTM A213 | 10.3 – 426 x 1.0 – 36 | T5, T9, T11, T12, T22, T91 |
| Seamless carbon and alloy steels for mechanical tubing | ASTM A333 | 1/4″ – 42″ x SCH20 – XXS | Gr1, Gr3, Gr6 |
| Seamless and welded carbon and alloy steel pipes for cryogenic use | ASTM A334 | 1/4″ – 4″ x SCH20 – SCH80 | Gr1, Gr6 |
| Seamless cold drawn carbon steel feedwater heater tube | ASTM A556 | 10.3 – 426 x 1.0 – 36 | A2, B2 |
Advantages of Carbon Steel
Strength and Durability: Suitable for heavy machinery and structural applications.
Cost-effectiveness: Because of its great strength and recyclability, it requires less material.
Versatility: Easy to fabricate, cut, and bend for a variety of purposes.
Environmental Advantages: Recyclable material, less waste.
Applications of Carbon Steel Pipe
Oil and Gas Industry: Dependable pipes for transferring oil and natural gas.
Bridges, buildings, highways, and tunnels all contain structural components.
Exhaust pipes, frames, and chassis components are examples of applications in the automotive industry.
Mechanical engineering is essential for conveying systems, pressure vessels, and hydraulic systems.
Chemical Industry: Used in reactors, storage tanks, and conveying systems due to its corrosion and high-temperature resistance.
Use of carbon steel pipes
Carbon steel pipes are widely used in a variety of industries due to its durability, corrosion resistance, and ease of machining.
Carbon steel pipes are essential for pipelines because they are strong, reliable, and resistant to corrosion, providing safe and efficient oil and gas transport.
Carbon steel pipes are used in bridges, high-rise structures, roadways, and tunnels to sustain structural loads while providing vital strength and durability.
Automobile Manufacturing: These pipes are found in exhaust systems, frames, and chassis components and provide exceptional wear resistance and strength, which is critical for vehicle performance.
Carbon steel pipes are used in conveying systems, pressure vessels, and hydraulic components because they are strong and reliable in harsh environments.
Chemical Industry: These pipes are used in conveying systems, reactors, and storage tanks because they are corrosion resistant and can withstand high temperatures, which are crucial in chemical operations.
Carbon Steel vs. Black Steel
Corrosion Resistance: Carbon steel is susceptible to corrosion, however it can be prevented by blackening.
Applications: Gas transmission, fire sprinkler systems, and protective conduit all use black steel with an iron oxide coating.
Carbon Steel Grade Vs. Carbon Content
| Grade | Carbon Content (%) |
| Ultra-high carbon steel | 1.00 – 2.00 |
| High-carbon steel | 0.60 – 0.99 |
| Medium carbon steel | 0.30 – 0.59 |
| Low-carbon steel | 0.16 – 0.29 |
| Ultra-low carbon steel | 0.05 – 0.15 |
Black steel pipe, which is known for its seamless design, outperforms galvanized pipe in gas transfer. The term “black steel” refers to the iron oxide coating that naturally forms on its surface during manufacture.
Black steel pipe is extremely durable, making it ideal for a wide range of applications. It is widely used in both rural and urban areas to transport water and natural gas, as well as to protect electrical cables and conduits that carry high-pressure steam and air. In the oil business, black steel pipes efficiently deliver enormous amounts of oil to remote places while requiring little maintenance. They are also used in gas distribution both inside and outside residences, as well as in wells and sewage treatment systems. It is vital to remember that black steel pipes are not permitted to transport drinking water due to regulatory concerns.
Conclusion
Newzel Industries offers a comprehensive assortment of carbon steel pipes and tubes, ensuring superior quality and dependability for a variety of industrial applications. Our steel pipes, whether seamless or welded, are designed to be efficient and long-lasting for any project.
