What is the cheapest type of steel tubing?

Price Comparison

Why ERW Carbon Steel is Cheapest

1. Material Composition

• Uses low carbon content steel (0.12-0.20% carbon) with minimal alloying elements
• Primary ingredients are iron and carbon, which are abundant and inexpensive

2. Manufacturing Process

• Electric Resistance Welding is a highly efficient process that:
  • Minimizes material waste
  • Requires less energy compared to seamless production
  • Enables continuous high-volume production

3. Structural Characteristics

• Welded construction (vs seamless) eliminates the costly process of piercing and rolling solid billets
• Wall thicknesses are standardized for cost-effectiveness

Key Variants and Their Prices

1. Q235B Grade (Most Common Cheap Option)

• Standard carbon structural steel in China
• Used for general construction, scaffolding, and non-critical piping
• Price: ~$400-500/ton (¥3,200-4,000/ton)

2. Q195 Grade (Even Lower Cost)

• Lower carbon content than Q235B
• Less strength but sufficient for light-duty applications
• Price: ~$300-400/ton

3. Black (Uncoated) vs Galvanized

• Black pipes (no surface treatment) are cheapest
• Galvanized pipes (zinc-coated) cost 20-50% more due to additional processing
  • Example: DN20 galvanized pipe costs ¥22.6/unit vs ¥15-18 for black pipe

Applications

• General construction scaffolding
• Temporary structures
• Non-pressure piping (e.g., drainage)
• Furniture frames
• Agricultural equipment
• Low-stress applications where corrosion resistance isn't critical
• https://www.wuxixinluoyy.com/high-precision-honing-tube.html