Pipes & Tubes

Applications of Pipes & Tubes

Pipes and tubes are essential components in various industries due to their durability, strength, and versatility. Some of the key applications include:

Industrial Applications:

• Oil & Gas Industry:

  Used for transporting crude oil, natural gas, and petroleum products in refineries and offshore rigs.

• Petrochemical & Chemical Industry:

  Essential for transporting chemicals, gases, and other hazardous materials safely.

• Power Plants:

  Used in high-pressure steam pipelines for thermal, nuclear, and hydroelectric power plants.

• Water Treatment & Plumbing:

  Applied in sewage systems, desalination plants, and water supply networks.

• Pharmaceutical Industry:

  Used for transporting purified water and medical gases in cleanroom environments.

• Food & Beverage Industry:

  Stainless steel pipes ensure hygienic processing and transportation of liquids and gases.

• Marine & Shipbuilding:

  Used for seawater pipelines, ballast systems, and engine exhaust systems.

• Construction & Infrastructure:

  Integral for building structures, bridges, and underground pipelines in urban areas.

Manufacturing Process of Pipes & Tubes

The manufacturing of pipes & tubes involves a series of precise steps to ensure durability, strength, and compliance with industry standards. This includes raw material selection, forming, welding (if applicable), heat treatment, finishing, and testing.

Step-by-Step Manufacturing Process:

• 1. Raw Material Selection:

  High-quality raw materials like stainless steel, carbon steel, alloy steel, and other metals are selected based on application requirements.

• 2. Forming Process:

  For seamless pipes, a solid billet is heated and pierced to create a hollow tube. For welded pipes, metal sheets or coils are rolled and welded into shape.

• 3. Welding & Sizing (For Welded Pipes Only):

  The edges of rolled sheets are welded using Electric Resistance Welding (ERW) or Submerged Arc Welding (SAW) techniques and then sized to precise dimensions.

• 4. Heat Treatment:

  Pipes undergo heat treatment like annealing, normalizing, or quenching & tempering to enhance mechanical properties and remove stresses.

• 5. Cold Drawing & Finishing:

  Pipes are drawn through dies for precise dimensions and improved surface finish. Additional treatments like polishing or coating may be applied.

• 6. Inspection & Testing:

  Pipes are inspected through non-destructive testing (NDT), hydrostatic testing, and ultrasonic testing to meet industry standards.

• 7. Surface Treatment & Coating:

  Pipes are treated with pickling & passivation, galvanization, or epoxy coatings for enhanced corrosion resistance.

• 8. Packaging & Dispatch:

  Pipes and tubes are securely packed, labeled with specifications, and dispatched for safe transportation and delivery.

Seamless Pipes

Seamless pipes are manufactured without a welded seam, making them stronger and more reliable for high-pressure applications. These pipes are produced through a hot rolling or cold drawing process, ensuring uniformity in shape and dimensions. They are widely used in industries such as oil & gas, petrochemicals, power plants, and marine applications due to their superior strength, corrosion resistance, and ability to withstand extreme conditions.

Key Features:

• 1. Manufactured without a welded seam, ensuring superior strength and reliability.
• 2. Suitable for high-pressure and high-temperature applications.
• 3. Available in various materials such as carbon steel, stainless steel, and alloy steel.
• 4. Corrosion-resistant coatings available for extended durability.
• 5. Used in oil & gas, petrochemicals, marine, and power plant applications.

Dimensions & Specifications Table (ASME/ASTM Standards):

Seamless Tubes

Seamless tubes are cylindrical hollow sections manufactured without any welding, ensuring superior strength and uniformity. These tubes are widely used in critical applications requiring high precision, pressure resistance, and corrosion resistance, such as in automotive, aerospace, oil & gas, and mechanical industries. Seamless tubes are available in various materials, including stainless steel, carbon steel, and alloy steel, to meet different industrial needs.

Key Features:

• 1. No welded seams, ensuring better strength, durability, and leak-proof performance.
• 2. Ideal for high-pressure and high-temperature applications.
• 3. Manufactured using precision cold-drawn or hot-rolled processes.
• 4. Available in various materials such as stainless steel, carbon steel, and nickel alloys.
• 5. Used in applications like heat exchangers, hydraulic systems, and boiler tubes.

Dimensions & Specifications Table (ASTM/ASME Standards):

Welded Pipes

Welded pipes are manufactured by rolling a metal sheet and welding the seam to create a hollow cylindrical shape. They are cost-effective, versatile, and suitable for various industrial applications. These pipes are commonly used in structural, plumbing, and fluid transportation industries due to their availability in different sizes, materials, and wall thicknesses. Welded pipes offer excellent corrosion resistance and mechanical properties when produced with advanced welding techniques.

Key Features:

• 1. Manufactured by high-frequency welding, ensuring strong and durable seams.
• 2. Available in different materials like stainless steel, carbon steel, and galvanized steel.
• 3. Suitable for fluid transportation, structural applications, and industrial pipelines.
• 4. Cost-effective solution compared to seamless pipes for many applications.
• 5. Available in various sizes, thicknesses, and coatings for enhanced durability.

Dimensions & Specifications Table (ASTM/ASME Standards):

Welded Tubes

Welded tubes are produced by rolling and welding metal sheets into cylindrical shapes, followed by welding along the seam. These tubes are widely used in automotive, construction, heat exchangers, and fluid transport applications due to their cost-effectiveness and availability in various sizes and materials. Advanced welding techniques ensure structural integrity and enhanced performance in different environmental conditions.

Key Features:

• 1. Manufactured using high-frequency welding for strong and durable seams.
• 2. Available in materials such as stainless steel, carbon steel, and galvanized steel.
• 3. Used in industries like construction, automotive, and fluid transportation.
• 4. Cost-effective alternative to seamless tubes for many applications.
• 5. Available in various sizes and thicknesses for customized applications.

Dimensions & Specifications Table (ASTM/ASME Standards):

EFW Pipes

Electric Fusion Welded (EFW) pipes are manufactured by rolling a metal plate and using electrical current to heat and fuse the edges. These pipes are widely used in industries such as oil & gas, water pipelines, structural applications, and high-temperature environments. EFW pipes are known for their excellent weld integrity, high mechanical strength, and suitability for large-diameter applications.

Key Features:

• 1. Manufactured using electric fusion welding for superior joint strength.
• 2. Available in stainless steel, carbon steel, and alloy steel.
• 3. Used in industries such as oil & gas, water supply, and structural applications.
• 4. Suitable for high-pressure and high-temperature environments.
• 5. Available in various diameters and thicknesses for customized applications.

Dimensions & Specifications Table (ASTM/ASME Standards):

ERW Pipes & Tubes

Electric Resistance Welded (ERW) pipes and tubes are manufactured by cold-forming a steel strip into a cylindrical shape and fusing the edges using electrical resistance. ERW pipes and tubes are widely used in industries such as oil & gas, structural applications, water pipelines, and automotive components due to their high strength, uniform thickness, and cost-effectiveness.

Key Features:

• 1. Manufactured using high-frequency electric resistance welding for strong and precise seams.
• 2. Available in carbon steel, stainless steel, and galvanized steel.
• 3. Commonly used in structural, water distribution, and automotive applications.
• 4. Provides cost-effective and high-efficiency performance for diverse applications.
• 5. Available in various diameters, thicknesses, and coatings for enhanced durability.

Dimensions & Specifications Table (ASTM/ASME Standards):