q195 galvanized pipe
q195 galvanized pipe
q195 galvanized pipe
q195 galvanized pipe
q195 galvanized pipe
q195 galvanized pipe
q195 galvanized pipe (6)
q195 galvanized pipe
q195 galvanized pipe
q195 galvanized pipe
q195 galvanized pipe
q195 galvanized pipe

Q195 Galvanized Pipe

Q195 Galvanized Pipe: Durable Protection for Various Applications

Q195 galvanized steel pipes are carbon structural steel pipes coated with zinc to prevent corrosion. The “Q195” designation indicates a yield strength of 195 MPa. These pipes undergo hot-dip galvanization, where steel is immersed in molten zinc, forming a protective layer. They are lightweight, cost-effective, and widely used in low-to-medium pressure applications.

  • Steel Grade: Q195 (similar to SAE 1008/ASTM A500 Grade A)

  • Surface Finish: Hot-dip galvanized or electro-galvanized

  • Zinc Coating: 40–300g/m² (customizable)

  • Standard Length: 5.8m, 6m, or customized

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Description

What is the Q195 Galvanized Pipe?

195 galvanized pipes are crafted from Q195 carbon structural steel, which has a yield strength of 195 MPa. This steel grade is relatively low in strength compared to some others like Q235, but it offers good ductility, toughness, and weldability, along with excellent press workability.​
The galvanization process is what truly sets these pipes apart. They are coated with a layer of zinc, which acts as a protective shield against corrosion and rust. This is achieved through either hot – dip galvanizing or electroplating methods. In hot – dip galvanizing, the pipes are submerged in a bath of molten zinc at around 450 degrees Celsius. This results in a thick, durable zinc coating that can range from 200 – 460 g/m² (for hot – dipped pipes), providing long – term protection. Electroplating, on the other hand, uses an electrical current to deposit a thin layer of zinc on the pipe surface, usually resulting in a thinner coating, around 60 – 150 g/m² for pre – galvanized pipes.

Advantages of Q195 Galvanized Pipe

  • ✅ Excellent Corrosion Resistance: Zinc coating prevents oxidation and rust.

  • ✅ Good Weldability: Suitable for welding and forming due to low carbon content.

  • ✅ Cost-Effective: More economical than higher-grade steels while meeting structural needs.

  • ✅ Lightweight: Ideal for non-heavy-duty applications requiring ease of handling.

  • ✅ Versatile Applications: Used in fencing, scaffolding, piping systems, and more.

Technical Parameters of Q195 Galvanized Pipe

Common Q195 Galvanized Pipe Parameters

Parameter Range/Typical Value
Outer Diameter (OD) 1/2″ ~ 8″ (20~219mm), up to 1020mm (40 inch) for larger pipes
Wall Thickness (WT) 0.6mm ~ 12mm, up to 20mm
Length 2m – 12m, or customized
Zinc Coating (Pre-galvanized) 60-150 g/m$^2$
Zinc Coating (Hot-dip galvanized) 200-460 g/m$^2$ (typically 45-85 m thickness)
Technique Hot Rolled, Cold Rolled, ERW (Electric Resistance Welded), EFW (Electronic Fusion Welded), DSAW (Double Submerged Arc Welded)
Standard GB 3091, ASTM A53, BS 1387, JIS G3444, DIN2444, EN (Chinese, American, British, Japanese, German, European standards)
Pipe End Plain, threaded with socket, beveled with plastic caps
Surface Galvanized, color painted (on top of galvanizing if desired)

Q195 Steel Mechanical Properties (Typical)

Property Value (for 16mm diameter)
Yield Strength 195 MPa
Tensile Strength 315 – 430 MPa
Elongation (%) 33

Q195 Steel Chemical Composition (Typical)

Element Content (%)
C 0.06 – 0.12
Si 0.3
Mn 0.20 – 0.50
P 0.05
S 0.045

Applications of Q195 Galvanized Steel Pipe

  • 🔧 Construction: Scaffolding, frame structures, guard rails

  • 🏡 Fencing: Residential and commercial fencing posts and panels

  • 💧 Water/Gas Piping: Non-pressure water and gas transportation

  • 🚜 Agriculture: Greenhouse structures, irrigation pipes

  • 📦 Furniture & Storage: Rack systems, shelving, outdoor furniture frames

galvanized pipe application

How to Choose the Right Galvanized Pipe

When selecting galvanized pipes for your project:

  • 🔍 For light structural and low-pressure needs → Choose Q195

  • 🏗️ For general construction use → Choose Q235

  • 🏢 For heavy-duty, high-strength applications → Choose Q345

 

Comparison Table: Q195 vs Other Galvanized Steel Pipes

Feature Q195 Galvanized Pipe Q235 Galvanized Pipe Q345 Galvanized Pipe
Steel Grade Q195 Q235 Q345
Yield Strength (MPa) ≥195 ≥235 ≥345
Tensile Strength (MPa) 315–430 375–500 470–630
Carbon Content (%) ≤0.06 ≤0.22 ≤0.20
Weldability Excellent Good Moderate
Ductility High Moderate Lower
Cost Low Moderate High
Common Use Light-duty structures General construction Heavy structural use

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