Products Description
This is a large-diameter steel pipe with a zinc coating for corrosion resistance. The "2 1/2-inch" is its Nominal Pipe Size (NPS), a standardized name that does not equate to its exact physical dimensions. It is used for heavy-duty industrial, structural, and municipal applications.
Products Specifications
Nominal Pipe Size (NPS): 2 1/2 inch
Schedule (Wall Thickness):
Schedule 40 (Standard): Most common for general use.
Schedule 80 (Extra Strong): Used for high-pressure systems.
Actual Outside Diameter (OD): 2.875 inches (73.0 mm). This is fixed for all schedules.
Actual Inside Diameter (ID): Varies by schedule.
Schedule 40: ID = 2.469 inches (62.7 mm)
Schedule 80: ID = 2.323 inches (59.0 mm)
Products Advantages
Extreme Strength & Durability: Can handle very high pressure and heavy structural loads.
Excellent Corrosion Resistance: The zinc coating provides long-life protection outdoors and in harsh environments.
Long Lifespan: Can last for decades, even in demanding applications.
Fire Resistance: Non-combustible, making it suitable for fire protection systems.
Dual Protection: Zinc coating + organic paint layer for excellent corrosion resistance.
Wide Color Range: Available in all RAL colors, gloss or matte finish.
Long Lifespan: PVDF coating offers up to 20 years of color durability.
Easy Forming: Can be roll-formed, bent, or cut without damaging the coating.
Eco-Friendly Options: Lead-free and chrome-free coatings available.
Applications: Roofing sheets, wall panels, sandwich panels, home appliances, and more.
Products Applications
Industrial Plumbing: Conveying process water, chemicals, compressed air, and other industrial fluids in factories and plants.
Municipal Water Lines: Often used for smaller branch lines or service connections from a main to a building in older systems.
Structural Columns/Posts: Provides immense load-bearing strength for buildings, large carports, commercial canopies, and mezzanines.
Heavy-Duty Handrails & Guardrails: Used in industrial settings, stadiums, and public infrastructure where extreme durability is required.
Piling and Foundations: Used as piles for foundational support in certain construction projects.
Agricultural Uses: For large-scale irrigation systems and structural components in barns and processing facilities.
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Q: Is this size used for residential purposes?
A: Almost never in modern homes. You would not find it inside a standard house. Its only residential application might be as a main water service line from the street to an older home or as a structural column in a large, custom-built post-and-beam structure.
Q: Can it be used for natural gas?
A: While technically possible for very large gas service lines, black steel pipe is the universal standard for gas applications. The use of galvanized for gas is generally discouraged and often prohibited by code due to the risk of zinc flaking clogging orifices.
Q: Where can I buy it?
A: You will not typically find it at big-box home improvement stores. It must be purchased from:
Industrial Plumbing Suppliers
Steel Supply Centers or Metal Supermarkets
Specialty Irrigation or Agricultural Supply Stores
Q: How does it compare to 2" and 3" pipe?
A: It fits between them in terms of flow capacity and strength.
2-inch Schedule 40: OD = 2.375", ID = 2.067"
2 1/2-inch Schedule 40: OD = 2.875", ID = 2.469" (~40% larger ID than 2")
3-inch Schedule 40: OD = 3.5", ID = 3.068" (~
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