1. Deep Protection: Why Anti-Rust Coating is the Lifeline of Indoor Projects
In indoor environments, while there is no direct rain, humidity and ambient corrosive elements remain "silent killers" for steel. As a professional ERW Steel Pipe Manufacturer, we know that standard bare pipes oxidize rapidly. Our products feature a dense Varnished Steel Pipe protective film applied through an automated spraying process. This varnish not only seals out oxygen and moisture but significantly extends the time before initial oxidation begins.
2. Process Breakdown: High-Frequency Welding and Precision Forming
As a leading Carbon Steel Pipe Factory, our ERW (Electric Resistance Welded) pipes utilize high-frequency induction welding to ensure the weld seam strength is consistent with the base metal. The table below displays the baseline data for core physical properties, crucial for ensuring no stress cracking under long-term pressure.
| Technical Data | Standard | Actual Value |
| Tensile Strength | ≥ 330 MPa | 415 - 480 MPa |
| Yield Strength | ≥ 205 MPa | 245 - 310 MPa |
| Elongation | ≥ 20% | 28% - 35% |
3. Coating Standards: Chemical Resistance of Industrial Varnish
Ordinary Black Painted Steel Pipe on the market often flakes easily. In contrast, our varnish coating is cured through high-temperature baking. This Anti-Rust Coated Pipe possesses superior adhesion; even with minor bumps during handling and installation, the coating will not peel off. This isn't just about aesthetics—it prevents "pitting corrosion" caused by localized exposure.
4. Detailed Specifications for Industrial Piping Solutions
To adapt to varying pressure and structural needs, we provide a full range of pipes from thin-walled to heavy-duty. Below is a specification reference for common Schedule 40 Steel Pipe, demonstrating our capacity as a top-tier Steel Pipe Supplier.
| Wall Thickness | OD Tolerance | Varnish Thickness | Applications |
| 2.0mm - 4.5mm | ± 0.5% | 20μm - 35μm | Fire Sprinklers, HVAC |
| 5.0mm - 8.0mm | ± 0.8% | 30μm - 45μm | Shelving, Indoor Supports |
| 8.0mm + | ± 1.0% | 40μm - 60μm | Machine Frames |
5. Cost Analysis: Reducing Operating Expenses via Longevity
Choosing our Corrosion Resistant ERW Pipe is essentially an exercise in "subtraction" for your project. While the initial cost may be slightly higher than untreated pipe, over a 10-15 year lifecycle, it eliminates the labor costs of rust removal and repainting. As a direct factory, we cut out middlemen, ensuring you get professional-grade Structural Steel Tubing at the most competitive price.
