Technical Specifications
Executive Standards
- GB/T 3091 - Welded Steel Pipes for Low-Pressure Fluid Conveyance (Hot-Dip Galvanized)
- GB/T 13793-2016 - Electrically Welded Steel Pipe
Dimensions & Tolerances
Outer Diameter
DN15 (21.3mm) - DN200 (219mm)
Wall Thickness
2.75mm - 6.0mm
Tolerance
Standard welded steel pipe tolerances
Applications
- Low-pressure fluid: Transporting general low-pressure fluids such as water, gas, air, oil, and heating steam.
- Fire Protection: Fire Water Supply Systems and Natural Gas/Coal Gas Pipelines
- Construction Agriculture: Structural supports, scaffolding, railings, greenhouse frames
- Industrial & Municipal: Condensers/Coolers for Chemical Equipment, Offshore Oil Well Tubing, Highway Bridges, Power Facilities, Coal Mines
- Indoor low-pressure gas piping, fire protection piping, and structural components.
Key Features
- The total weight of the hot-dip galvanized coating per unit area is ≥300 g/m². Coatings with a weight of ≥500 g/m² are available upon request.
- Excellent corrosion resistance and long service life
- Uniform zinc coating with strong adhesion
- Cost-effective and suitable for general use
- Process Description: Hot-dip galvanizing provides a thick, uniform coating with strong adhesion and long service life; electro-galvanizing offers lower cost but reduced corrosion resistance.
- Weight Calculation Formula: W = 0.02466 × S × (D - S), where D is the outer diameter (mm) and S is the wall thickness (mm).
