Pipes And Tubes Explained: Key Differences, Materials, Manufacturing, And Industrial Applications

By Author: Nova Steel Corporation
Total Articles: 25
Comment this article

Nova Steel Corporation is a major Pipes and Tubes Manufacturer in India. Pipes and tubes move liquids, gasses, and other commodities in a variety of industries, including construction, oil and gas, and wastewater treatment. These products come in a number of materials, including stainless steel, carbon steel, and alloys, and offer strength, corrosion resistance, and long-term endurance. We also serve as High Nickel Alloy Pipes and Tubes Manufacturers in India.
What Are Pipes?
Pipes are primarily used to transport fluids—such as water, gas, oil, and chemicals—over short and long distances. Their design is based on the need to move these substances efficiently and safely. Pipes are measured by their nominal diameter (ND) and schedule (wall thickness), which focus on internal capacity rather than external dimensions. ...
... This makes them ideal for calculating flow rate and pressure drops in fluid transport systems.
The most common standards used to define pipes include:

ASME/ANSI B36.10 (for carbon steel pipes)


ASME B36.19 (for stainless steel pipes)


API standards (for oil & gas industry)

What Are Tubes?
Tubes are used in structural and mechanical applications where the outer diameter, strength, and precision of dimensions are more critical. They are measured by their outside diameter (OD) and wall thickness, ensuring consistent shape and performance. Tubes are also available in various cross-sections like square, rectangular, and oval, not just round.
Tubes are preferred in applications such as:

Mechanical components in automobiles and machinery


Architectural frameworks and support structures


Hydraulic and pneumatic systems


Heat exchangers and condensers


Medical devices

Because tubes require tighter tolerances and cleaner finishes, their manufacturing standards are stricter. Common tube standards include ASTM A213, ASTM A269, ASTM A554, and EN standards for European markets.
Key Differences Between Pipes and Tubes

Measurement: Pipes are measured by nominal size and internal diameter; tubes by exact outer diameter.


Purpose: Pipes transport fluids or gases; tubes are used in structural, architectural, and precision applications.


Tolerance: Tubes are manufactured with tighter tolerances; pipes are less precise in comparison.


Appearance: Tubes often have smoother, polished finishes, while pipes may have rougher surfaces due to their utilitarian use.


Variety: Tubes come in round, square, and rectangular shapes; pipes are almost always round.

Common Materials Used in Pipes and Tubes
The selection of materials depends on the environment, purpose, and industry. Here are some commonly used materials:

Stainless Steel – Ideal for corrosive environments, food-grade applications, and high-pressure systems.


Carbon Steel – Strong and economical, widely used in the oil, gas, and construction sectors.


Copper – Excellent thermal and electrical conductivity, ideal for plumbing, refrigeration, and HVAC.


Brass and Bronze – Used in decorative, plumbing, and marine applications.


Aluminum – Lightweight and corrosion-resistant, suitable for transportation and architectural projects.


PVC/Plastic – Common in drainage systems, low-pressure applications, and chemical transport due to affordability and ease of installation.


Galvanized Steel – Steel coated with zinc to resist rusting, used in outdoor or moisture-prone areas.

We are Pipes and Tubes Supplier In:

Pipe & Tube Supplier in Saudi Arabia
Pipe & Tube Supplier in Oman
Pipe & Tube Supplier in Kuwait
Pipe & Tube Supplier in Bahrain
Pipe & Tube Supplier in Qatar

Manufacturing Process
Both pipes and tubes can be seamless or welded.

Seamless: Manufactured from a solid billet which is pierced and then elongated. This method produces a product with no joints, offering high strength and resistance to pressure. Seamless pipes and tubes are ideal for high-temperature and high-pressure applications.


Welded: Made by rolling a strip or sheet and welding the seam. This method is cost-effective and widely used in medium to low-pressure systems. Welded tubes are often used in decorative and structural applications.

The choice between seamless and welded depends on performance requirements, budget, and industry regulations.
Industrial Applications
Pipes are widely used in:

Oil & Gas transmission lines


Water treatment and supply systems


Chemical processing plants


HVAC (Heating, Ventilation, and Air Conditioning)


Firefighting systems


Marine and offshore platforms

Tubes are commonly used in:

Structural and architectural applications (buildings, bridges)


Automobiles and aerospace (roll cages, exhaust systems)


Medical instruments and equipment


Hydraulic and pneumatic cylinders


Boilers, condensers, and heat exchangers

Choosing the Right Product
When selecting between a pipe and a tube, consider the following:

Function: Is the goal to transport fluid or provide structural support?


Size Requirements: Do you need precise dimensions or can you work with nominal measurements?


Pressure and Temperature: Will the material be subjected to high pressure or temperature?


Material Compatibility: Will the pipe/tube come into contact with corrosive substances?


Budget: Tubes with higher precision typically cost more than standard pipes.

Pipes & Tubes Manufacturers in India
Pipe and tube manufacturers in India are renowned for providing high-quality, long-lasting goods that match global standards. Pipes and Tubes Suppliers provides a large range of pipes and tubes tailored to the needs of various industries, ensuring efficiency and safety in fluid and gas transportation systems. Indian manufacturers are well-known for their precise engineering and affordable products.