304 20592PL Flange DN20*PN6 Benefits and Selection Tips

Plate Welding Flange: A Reliable Connection Choice

In piping systems, dependable joints are essential for maintaining flow efficiency and sealing integrity. Among flange categories, the Plate Welding Flange is valued for its simplicity and durability. A common representative is the 304 20592PL Flange DN20*PN6, which combines stainless steel’s corrosion resistance with standardized dimensions, making it a practical solution for many industrial and municipal systems.

Large infrastructure projects often demand bulk supply directly from Chinese manufacturers, and this model meets that need by balancing performance, affordability, and compliance with global standards.

Breaking Down the Flange Designation

The term 304 20592PL Flange DN20PN6* carries technical meaning:

·304 Stainless Steel → Known for corrosion resistance and ease of fabrication.

·20592PL → “PL” identifies it as a Plate Welding Flange.

·DN20 → Nominal diameter of 20 mm, often used in smaller distribution lines.

·PN6 → Pressure rating up to 6 bar, aligning with low-pressure system requirements.

The flat, circular flange is welded directly to pipe ends and secured with bolts, forming a dependable joint when combined with appropriate gaskets.

Advantages of Using Plate Welding Flanges

This type of flange provides multiple engineering benefits:

·Ease of Assembly: Straightforward welding and alignment minimize installation time.

·Secure Sealing: Flat faces accommodate gaskets, helping reduce leakage risks.

·Cost Savings: More economical than heavier alternatives such as neck flanges.

·Global Compatibility: Manufactured under recognized standards for interchangeability.

·Scalability: Suitable for China supply in bulk quantities, making it practical for large contracts.

Such features explain why the Plate Welding Flange continues to be favored across diverse sectors.

Why Stainless Steel 304 Makes a Difference

Choosing stainless steel 304 ensures the flange can withstand challenging environments. Its key qualities include:

·Resistance to Water and Mild Chemicals: Prevents rust and surface degradation.

·Strength and Longevity: Extends operational lifespan under repeated use.

·Good Weldability: Reduces fabrication defects during assembly.

·Hygienic Properties: Suitable for water treatment and food-grade systems.

These properties reinforce the 304 20592PL Flange DN20*PN6 as a dependable option in sensitive applications.

Technical Overview

Key specifications include:

·Nominal Diameter: DN20 (20 mm)

·Pressure Rating: PN6 (6 bar)

·Type: Plate Welding Flange (20592PL)

·Material: Stainless Steel 304

·Sealing Face: Flat face suitable for gaskets

·Bolt Holes: Conforms to PN6 drilling patterns

By following international dimensional standards, this flange ensures compatibility with common pipeline designs.

Typical Applications

The 304 20592PL Flange DN20*PN6 is widely adopted in:

·Water Supply Networks → For clean and reliable water delivery.

·Gas Distribution Lines → Effective in controlled, low-pressure systems.

·Heating and Cooling (HVAC) → Provides reliable sealing in circulation loops.

·Process Industries → Connects equipment like pumps, valves, and piping sections.

·Light Chemical Services → Suitable for mild corrosive environments.

Its adaptability allows engineers to specify it confidently for varied projects.

How to Select the Right Flange

When considering a Plate Welding Flange for your system, evaluate:

1.Pressure Requirements – Confirm PN6 is adequate.

2.Material Certification – Ensure 304 stainless steel is properly documented.

3.Standard Compliance – Verify EN 1092-1 or equivalent adherence.

4.Supplier Reliability – For large-scale projects, prefer Chinese manufacturers with proven batch supply capacity.

5.Installation Capability – Confirm welders are trained for stainless steel fabrication.

A careful selection process ensures long-lasting performance.

Best Practices for Installation

To maximize service life, follow these guidelines:

·Prepare pipe ends with proper cleaning and alignment.

·Apply welding methods suitable for stainless steel 304.

·Use gaskets compatible with the transported medium.

·Tighten bolts gradually in a crisscross pattern for even load distribution.

·Inspect all joints for weld integrity and sealing reliability.

Such steps ensure the flange performs consistently in operation.

Conclusion: The Value of Plate Welding Flange

The 304 20592PL Flange DN20*PN6 exemplifies the benefits of the Plate Welding Flange family—cost-effectiveness, durability, and adherence to global standards. With stainless steel construction and a PN6 rating, it remains a reliable option across water, gas, HVAC, and industrial projects.

For organizations managing extensive infrastructure, sourcing from Chinese manufacturers with bulk supply capacity ensures both efficiency and affordability. In modern pipeline systems, this flange type continues to serve as a vital and trusted connection component.

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.