Carbon Steel Pipes for Every Pressure and Structural Requirements

Carbon Steel Pipes

Carbon Steel Pipes

Carbon Steel Pipes

Pressure ratings and wall thickness are not interchangeable decisions — they are the specification. Carbon steel pipes are available across a continuous range of schedule designations from SCH 20 through XXS, each stepping up in wall thickness to match the pressure demands and structural loads of the system they serve. Getting the schedule right from the start determines how the installation performs across its entire service life.

Metal Exponents stocks carbon steel pipes in ASTM A36, A53 Grade B, and API 5L grades sourced from established mills in Japan, Korea, and China, giving engineers, contractors, and fabricators in the Philippines access to the full schedule range with consistent dimensional tolerances and mill certifications across every order.

Carbon Steel Coil

SCH 20

The lightest wall option in the carbon steel schedule range, SCH 20 is suited for non-critical structural components and low-pressure fabrication work. Its good weldability and formability make it easy to work with across general construction applications where heavy loads and high pressure are not factors.

Carbon Steel Coil

Specifications/Technical Details:

Category Property Value/Description
Chemical Carbon ≤0.25%
Manganese 0.60-1.50%
Phosphorus ≤0.040%
Sulfur ≤0.040%
Mechanical Yield Strength ≥205 MPa
Tensile Strength 380-515 MPa
Elongation ≥25%
Physical Wall Thickness 2.11-6.35 mm
Coil Width 1000-1500 mm

Common Applications

SCH 20 is the practical choice for light-load applications where pressure demands are minimal, including:

  • Light structural framing and bracing
  • HVAC ductwork fabrication
  • General fabrication and machinery bases

STD

Standard wall pipes are the general-purpose specification for everyday construction and piping work. They carry enough wall thickness to handle moderate loading and pressure conditions reliably, making them a common choice for contractors who need a dependable, widely available grade across a broad range of applications.

Carbon Steel Coil

Specifications/Technical Details:

Category Property Value/Description
Chemical Carbon ≤0.25%
Manganese 0.60-1.50%
Mechanical Yield Strength ≥205 MPa
Tensile Strength 380-515 MPa
Elongation ≥25%
Physical Wall Thickness 2.77-9.27 mm
Coil Weight 10-25 MT

Common Applications

STD is widely used across moderate-load structural and piping applications, including:

  • Medium-pressure piping systems
  • Structural columns and beams
  • Pressure vessel components

SCH 40

The most widely specified carbon steel pipe schedule, SCH 40 is the standard choice for process piping, structural frameworks, and mechanical systems across commercial and industrial construction. Its acceptance across major codes and standards makes it straightforward to specify and source for most Philippine project requirements.

Carbon Steel Coil

Specifications/Technical Details:

Category Property Value/Description
Chemical Carbon ≤0.30%
Manganese ≤1.20%
Mechanical Yield Strength ≥240 MPa
Tensile Strength 415-550 MPa
Elongation ≥22%
Physical Wall Thickness 3.91-12.5 mm
Service Pressure Up to 300 psi

Common Applications

SCH 40 is the go-to specification for process and structural applications requiring broad code acceptance, including:

  • Process piping and steam lines
  • Structural columns and building frameworks
  • Mechanical piping systems

XS

Carbon Steel Coil

Extra Strong wall pipes are specified for industrial applications where operating conditions are more demanding than standard schedules can accommodate. The heavier wall provides greater resistance to internal pressure and external mechanical stress, making it suitable for process lines and structural members in heavier-duty environments.

Carbon Steel Coil
Carbon Steel Coil

Specifications/Technical Details:

Category Property Value/Description
Chemical Carbon ≤0.30%
Mechanical Yield Strength ≥240 MPa
Tensile Strength 415-550 MPa
Physical Wall Thickness 5.08-15.1 mm
Pressure Rating 400-600 psi

Common Applications

XS is suited for process and structural applications where pressure and mechanical loads exceed what standard schedules can handle, including:

  • High-pressure process lines
  • Heavy structural members
  • Power plant piping

SCH 80

A heavy-wall pipe for high-pressure service and structural applications where the operating environment places sustained mechanical and thermal demands on the material. SCH 80 is commonly specified for steam lines, gas systems, and industrial structural supports that require both pressure integrity and long-term dimensional stability.

Carbon Steel Coil

Specifications/Technical Details:

Category Property Value/Description
Chemical Carbon ≤0.30%
Mechanical Yield Strength ≥240 MPa
Tensile Strength 415-550 MPa
Physical Wall Thickness 7.11-21.4 mm
Pressure Rating 600-1000 psi

Common Applications

SCH 80 is specified for high-pressure industrial systems and structural applications that require maximum wall integrity, including:

  • High-pressure steam and gas lines
  • Heavy industrial structural supports
  • Refinery process piping

SCH 160

Specified for the most demanding pressure conditions in heavy industry, SCH 160 is built for systems that must maintain pressure integrity across extended service periods without scheduled downtime. It is the preferred specification for petrochemical, refinery, and power generation applications where operating pressures consistently reach the upper limits of the schedule range.

Carbon Steel Coil

Specifications/Technical Details:

Category Property Value/Description
Chemical Carbon ≤0.30%
Mechanical Yield Strength ≥240 MPa
Physical Wall Thickness 12.7-31.8 mm
Pressure Rating 1000-1500 psi

Common Applications

SCH 160 serves extreme industrial applications requiring uninterrupted operation under maximum design pressure, including:

  • Extreme high-pressure systems
  • Heavy equipment bases
  • Petrochemical plant structures

SCH XXS

Double Extra Strong wall is the heaviest schedule in the carbon steel pipe range, built for critical systems where the design pressure exceeds what all lower schedules can contain and where structural reinforcement requirements are absolute.

Carbon Steel Coil

Specifications/Technical Details:

Category Property Value/Description
Chemical Carbon ≤0.30%
Mechanical Yield Strength ≥240 MPa
Physical Wall Thickness 10.3-38.1 mm
Pressure Rating 1500+ psi

Common Applications

XXS is the specification for installations where pressure containment is a critical design constraint, including:

  • Critical high-pressure pipelines
  • Heavy machinery foundations
  • Extreme structural reinforcement

Source Quality Carbon Steel Grades from Metal Exponents

Pressure piping and structural fabrication projects in the Philippines demand materials that are certified, dimensionally consistent, and available when your schedule requires them. With over 40 years of steel supply experience, Metal Exponents sources from established mills in Japan, Korea, and China and maintains stock across the full schedule range with engineering support to help you confirm the right specification before your order is placed.

With warehouses in Manila, Cebu, and Davao, we deliver nationwide and keep your projects on schedule. Get in touch with us today.

Carbon Steel Coil