Carbon Steel Seamless Pipe & Tube Manufacturer – ASTM A106 / API Grades

At USA Piping Solution, we are trusted carbon steel pipe manufacturers and global exporters specializing in premium-grade carbon steel seamless pipes and tubes. Our extensive inventory includes ASTM A106 seamless pipe, known for its performance in high-temperature services, and seamless carbon steel tubes, ideal for heat exchangers, condensers, and hydraulic applications. We also supply CS seamless pipes engineered for strength, corrosion resistance, and dimensional precision under extreme pressure. With ISO-certified facilities and full traceability, we deliver reliable piping solutions for critical industries such as oil & gas, power, refineries, and petrochemical sectors—on time and to specification.

What is a Carbon Steel Seamless Pipe and Tube?

Carbon steel seamless pipes and tubes are integral components in industrial systems that require strength, durability, and uniformity. Both are made from seamless carbon steel, meaning they are produced without welds, which enhances their strength and performance in high-pressure and high-temperature environments. However, while they may appear similar, carbon steel seamless pipes and carbon steel seamless tubes serve distinct functions and are measured differently.

Types of Carbon Steel Pipes and Tubes

At USA Piping Solution, we supply a wide range of carbon steel pipes and tubes tailored to diverse industrial applications. Based on their manufacturing method and end-use, these products are classified into distinct types, each offering unique advantages in terms of strength, durability, and pressure handling.

1. Carbon Steel Seamless Pipes & Tubes

Carbon steel seamless pipes & tubes are manufactured through hot-rolled or cold-drawn processes, ensuring uniform strength and excellent resistance to high pressure and temperature. Their defect-free surface and structural integrity make them ideal for demanding sectors such as oil & gas transmission, petrochemical pipelines, and high-pressure steam systems. These are the preferred choice when durability and performance are critical.

2. Carbon Steel Welded Pipes & Tubes

Carbon steel welded pipes & tubes are produced by rolling and welding steel plates or coils. They are widely used for low to medium pressure applications where cost-efficiency and availability matter. Their applications span across structural frameworks, water pipelines, industrial fabrication, and HVAC systems. These pipes are available in ERW (Electric Resistance Welded) and LSAW (Longitudinal Submerged Arc Welded) variants, based on project needs.

3. Boiler & Heat Exchanger Tubes

Engineered for thermal and pressure-intensive environments, boiler & heat exchanger tubes are manufactured using specific grades like ASTM A179 and A210. These tubes are designed to withstand high temperatures, making them essential in power plants, refineries, and chemical industries. Their corrosion resistance and dimensional stability ensure efficient heat transfer and long service life in boilers, condensers, and superheaters.

Key Differences Between Seamless Pipe and Seamless Tube

Grades & Specifications We Offer

At USA Piping Solution, we supply a wide range of carbon steel seamless pipes and tubes that comply with globally recognized standards like ASTM, ASME, and API. Whether your application requires high-temperature resistance, pressure handling, or dimensional accuracy, our inventory is equipped to meet the technical demands of industries such as oil & gas, petrochemicals, boilers, and construction.

ASTM A106 Seamless Pipe

ASTM A106 seamless pipe is widely used in high-temperature services, such as refineries, power plants, and thermal pipelines. Manufactured to handle extreme pressure and heat, it offers excellent mechanical properties and weldability.

API 5L / ASTM A179 Seamless Tube

Our seamless carbon steel tubes include API 5L Grade B for pipeline transportation and ASTM A179 for heat exchangers and condensers. These tubes are manufactured with tight tolerances for high-performance environments.

CS Seamless Pipe (Carbon Steel)

Our CS seamless pipes are engineered for strength, reliability, and multi-industry usage. These pipes are available in standard and customized grades, including NACE, IBR, and PED-compliant variants.

All our grades are backed by Material Test Certificates (MTCs) and are available with Third-Party Inspection (TPI) from agencies like TUV, Lloyds, and SGS on request.

Sizes, Wall Thickness & Schedule Options

At USA Piping Solution, we supply a wide dimensional range of carbon seamless pipe and seamless carbon steel tube products to meet the varying needs of industrial applications. From precision tubing for heat exchangers to large-diameter piping for pressure systems, we ensure each product conforms to global dimensional and technical standards.

Standard Size & Schedule Range

Whether you're sourcing precision-grade seamless carbon steel tubes for instrumentation or carbon seamless pipes for fluid transport, our dimensional flexibility ensures compatibility with your system’s pressure, flow, and safety requirements.

Mechanical & Chemical Properties

All our carbon steel seamless pipes and tubes are manufactured to meet international mechanical and chemical property standards for superior strength, ductility, and corrosion resistance. Whether you're sourcing CS seamless pipes for pressure systems or carbon steel seamless tubes for heat transfer units, we ensure each product offers the required compression strength and material formability.

ASTM A106 Seamless Pipe – Mechanical & Chemical Properties

Note: This CS seamless pipe grade is ideal for high-pressure applications requiring excellent weldability and thermal resistance, without compromising on machinability.

ASTM A179 / A210 Seamless Tube – Mechanical & Chemical Properties

All our carbon steel seamless pipes and tubes are manufactured to meet international mechanical and chemical property standards for superior strength, ductility, and corrosion resistance. Whether you're sourcing CS seamless pipes for pressure systems or carbon steel seamless tubes for heat transfer units, we ensure each product offers the required compression strength and material formability.

ASTM A106 Seamless Pipe – Mechanical & Chemical Properties

Use Case: These seamless carbon steel tubes are engineered for boiler tubes, heat exchangers, and condensers—where thermal conductivity, wall uniformity, and fine-grain quality are critical.

Applications of Seamless Carbon Steel

At USA Piping Solution, our seamless carbon steel pipes and tubes are engineered to perform in extreme environments across various industrial sectors. Known for their strength, precision, and corrosion resistance, these products are trusted for critical applications such as:

Below are the key industry applications where our carbon steel products are widely used:

• Oil & Gas Pipelines: Our carbon seamless pipe solutions are widely used for upstream, midstream, and downstream pipeline networks due to their ability to handle high-pressure fluids and resist environmental stress.
• Boilers and Heat Exchangers: We supply seamless carbon steel tube products with excellent thermal conductivity and dimensional accuracy, ideal for high-temperature environments like boilers, condensers, and heat exchangers.
• Structural Fabrication: For load-bearing structures and industrial frameworks, cs seamless pipe offers high formability and compression strength, making it suitable for heavy fabrication and engineering works.
• Chemical & Refinery Lines: Our carbon steel seamless pipe range ensures resistance to corrosive fluids and high temperatures, making them perfect for aggressive chemical media and refinery processing lines.

Why Choose Us as Your Carbon Steel Pipe Supplier?

As one of the leading carbon steel pipe manufacturers and global carbon steel pipe suppliers, USA Piping Solution delivers precision-engineered seamless pipes and tubes backed by international quality benchmarks. We serve industries across oil & gas, construction, chemical processing, and power generation by offering products that meet ISO 9001:2015, IBR, PED, and NACE standards. Every shipment is delivered with complete traceability, Mill Test Certificates (MTCs), and third-party inspections on request—ensuring our clients receive certified and dependable piping solutions every time.

With a presence in over 40 countries, we provide fast worldwide delivery, robust quality control, and responsive support for custom specifications. From dimensional testing to packaging, each stage is optimized for reliability. Whether you require long-term supply contracts or urgent project fulfillment, USA Piping Solution is your trusted partner for seamless carbon steel pipes and tubes.

Request a Quote for Carbon Steel Seamless Pipes & Tubes

Looking for certified carbon steel seamless pipes and tubes with quick delivery? USA Piping Solution offers ready stock of ASTM A106, A179, and API 5L grades with same-day dispatch on standard sizes. Get instant pricing, MTCs, and support for bulk or custom orders from our expert team.