Understanding 304 20592PL Flange DN20*PN6 Pressure Rating

The Role of Plate Welding Flange

In the field of industrial piping, the Plate Welding Flange remains one of the most economical and reliable connection components. It provides a simple yet effective way to link pipes, valves, and equipment in a secure system. Among many available models, the 304 20592PL Flange DN20*PN6 stands out due to its stainless-steel composition, standardized sizing, and suitable pressure rating.

For projects requiring bulk orders, support from China manufacturer and China supply networks ensures consistent quality and steady availability. This makes the component an attractive choice for industries that demand efficiency without compromising reliability.

What Does 304 20592PL Flange DN20*PN6 Mean?

Breaking down the designation helps clarify the product:

·Material – 304 Stainless Steel
Known for corrosion resistance and strength, 304 stainless steel is a common austenitic alloy widely applied in food, chemical, and water systems.

·20592 Standard
“20592PL” refers to the GB/T 9119-2010 specification, which defines the structure and performance requirements of plate welding flanges.

·DN20 Nominal Diameter
“DN20” indicates a nominal bore size of 20 mm, making it suitable for small-diameter pipelines.

·PN6 Pressure Rating
“PN6” means the flange is designed for a maximum working pressure of 6 bar (0.6 MPa), ideal for low-pressure applications such as water supply and light industrial systems.

Advantages of Plate Welding Flange

The design of the Plate Welding Flange offers several notable advantages:

1.Cost Efficiency – Lighter and thinner than forged flanges, reducing both material and transportation costs.

2.Simple Welding Process – Easily attached to the pipe end by welding, saving installation time.

3.Adequate Sealing – With the correct gasket, the flange maintains a dependable seal under low-pressure conditions.

4.Versatility in Applications – Suitable for multiple industries that require economical and standardized piping solutions.

These strengths make it particularly attractive for bulk procurement, especially when sourcing from reliable China manufacturer channels.

Applications of 304 20592PL Flange DN20*PN6

This flange model is widely adopted in various industries:

Municipal Water Systems – Ensures stable pipe connections for distribution networks.

Chemical and Light Industry – Handles non-corrosive and low-pressure chemicals effectively.

HVAC Installations – Common in chilled water and air handling systems.

Food and Beverage Processing – 304 stainless steel ensures hygienic, clean connections.

Because of its practicality and durability, the 304 20592PL Flange DN20*PN6 continues to be a standard choice for engineers and procurement teams.

Why Stainless Steel 304?

304 stainless steel offers unique benefits that reinforce the value of this flange:

·Excellent Corrosion Resistance – Protects against moisture and mild acidic environments.

·Mechanical Reliability – Maintains good tensile strength at typical operating pressures.

·Hygienic Properties – Suitable for sanitary industries such as food and pharmaceuticals.

·Ease of Fabrication – Welds cleanly without cracking, ensuring long-term joint integrity.

These features make 304 Plate Welding Flanges highly dependable for long service life.

Compliance and Quality Standards

The 20592PL flange follows the requirements of GB/T 9119-2010, which guarantees:

·Dimensional Accuracy – Uniform sizing that ensures interchangeability with pipes and fittings.

·Pressure Class Verification – Tested to confirm performance under PN6 operating conditions.

·Surface Finishing Options – Polishing or anti-rust treatment to extend durability.

·Clear Markings – Size, material, and pressure class etched on each flange for traceability.

By choosing suppliers with strict quality control, buyers secure products that align with both international standards and project-specific needs.

Key Considerations for Purchasing

When buying 304 20592PL Flange DN20*PN6, consider these factors:

1.Material Certification – Ensure the product is genuine 304 stainless steel.

2.Correct Pressure Class – Match PN6 rating to the actual working environment.

3.Surface Quality – For industries requiring hygiene, polished finishes are preferable.

4.Bulk Supply Assurance – Confirm that the supplier can handle large, consistent orders.

Reliable sourcing not only saves costs but also prevents delays and maintenance issues during operations.

Conclusion: Trust in Plate Welding Flange

The 304 20592PL Flange DN20*PN6 is an ideal option for connecting low-pressure pipelines. With its stainless-steel durability, adherence to the 20592 standard, and suitability across industries, it delivers dependable performance at a reasonable cost.

When sourced through established China manufacturer and China supply channels, bulk availability and quality consistency are guaranteed. For industries ranging from water treatment to food processing, the Plate Welding Flange continues to be a trusted and practical solution.

References

GB/T 7714:Yu Y, Wang X, Wei S, et al. Corrosion Behavior and Mechanism of 304 Stainless Steel Welded Joints in Simulated Freshwater Environment[J]. Materials, 2025, 18(13): 3074.

MLA:Yu, Yue, et al. "Corrosion Behavior and Mechanism of 304 Stainless Steel Welded Joints in Simulated Freshwater Environment." Materials 18.13 (2025): 3074.

APA:Yu, Y., Wang, X., Wei, S., Chen, Z., Wang, Z., Li, M., & Liu, Z. (2025). Corrosion Behavior and Mechanism of 304 Stainless Steel Welded Joints in Simulated Freshwater Environment. Materials, 18(13), 3074.