What Is Φ114 Steel Pipe? Common Types Available on the Market

November 28, 2025
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Φ114 steel pipe refers to a steel pipe with an outer diameter of 114 mm. The symbol “Φ” (phi) is commonly used in engineering and construction to indicate diameter. Steel pipes of this size are widely used in construction, mechanical fabrication, water supply, fire-fighting systems, and various industrial applications due to their durability, load-bearing capability, and corrosion resistance.

1. Key Specifications of Φ114 Steel Pipe

  • Outer diameter (OD): 114 mm
  • Standard thickness options (approx.): 2.0 mm – 6.0 mm (varies by manufacturer)
  • Length: Commonly 6 m or 12 m
  • Material: Carbon steel, galvanized steel, stainless steel, or alloy steel
  • Manufacturing methods: Seamless or welded (ERW, SSAW)

These specifications may differ depending on international standards such as ASTM, JIS, DIN, or local manufacturer requirements.

2. Common Types of Φ114 Steel Pipes on the Market

Below are the most widely used variations of 114-mm steel pipes:

2.1 Black Steel Pipe (Carbon Steel Pipe Φ114)

This type is made from untreated carbon steel.
Uses: Structural frames, machine parts, industrial systems, steel scaffolding.

2.2 Galvanized Steel Pipe Φ114 (Hot-Dip or Electro-Galvanized)

Galvanized coating helps prevent rust and corrosion.
Uses: Water supply, fencing, fire-protection systems, outdoor structures.

2.3 Seamless Steel Pipe Φ114

Manufactured without any welded seam, offering superior strength and pressure resistance.
Uses: High-pressure pipelines, hydraulic systems, boilers, oil & gas applications.

2.4 Welded Steel Pipe Φ114 (ERW Pipe)

Made by welding steel strips into a tube.
Advantages: Cost-effective, consistent dimensions, widely available.
Uses: Construction, mechanical structures, steel frames, common piping.

2.5 Spiral Welded Pipe Φ114 (SSAW Pipe)

Produced by spirally welding steel coils.
Advantages: Good strength, can be made in long lengths.
Uses: Water transmission, infrastructure projects.

2.6 Stainless Steel Pipe Φ114

Made from stainless steel grades such as SUS304, 316, etc.
Advantages: Corrosion-resistant, hygienic, long lifespan.
Uses: Food processing, chemical industries, clean water systems.

3. Applications of Φ114 Steel Pipes

Φ114 pipes are widely used across various industries, such as:

  • Construction and civil engineering
  • Steel structural frames
  • Water and drainage systems
  • Fire-fighting and HVAC piping
  • Agricultural irrigation
  • Mechanical and industrial equipment
  • Oil, gas, and petrochemical systems (especially seamless pipes)

4. Advantages of Using Φ114 Steel Pipes

  • High durability and long service life
  • Good load-bearing and pressure resistance
  • Suitable for welding and machining
  • Wide variety of materials and coatings
  • Affordable and widely available

5. Suppliers of Φ114 Steel Pipes in Vietnam

Sắt Thép Lộc Thiên is one of Vietnam’s trusted providers of Φ114 steel pipes, offering reliable products that meet national and international standards. The company supplies materials for a wide range of purposes—from residential upgrades to major construction, infrastructure, and industrial projects.

Benefits When Purchasing Φ114 Steel Pipes from Sắt Thép Lộc Thiên

  • Guaranteed quality with full CO–CQ documentation and transparent sourcing
  • Nationwide delivery support, helping customers receive goods quickly and safely
  • Competitive pricing, especially for contractors and bulk orders
  • Attractive incentive programs for distributors and long-term partners
  • Convenient payment methods to suit different customer needs
  • Professional cutting and fabrication services, including Φ114 steel pipes tailored to project specifications

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