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This in-depth article provides a professional and practical overview of the Steel Flat Flange, a critical component in modern pipeline and pressure systems. From structural design and material selection to industrial applications and international standards, this guide explains how Wenzhou Longan delivers high-performance Steel Flat Flange solutions that align with real-world engineering demands.
A Steel Flat Flange is a pipe connection component characterized by a flat sealing surface that lies in the same plane as the bolt circle. It is widely used to connect pipes, valves, pumps, and pressure vessels through bolted joints with gaskets to ensure sealing performance.
Compared with raised-face or ring-type flanges, the flat-face structure offers simplicity, compatibility, and cost efficiency. The Wenzhou Longan Steel Flat Flange further enhances this classic design through advanced structural reinforcement and precision manufacturing.
| Flange Type | Sealing Surface | Typical Pressure | Main Advantage |
|---|---|---|---|
| Steel Flat Flange | Flat face | Low to High | Simple structure, wide compatibility |
| Weld Neck Flange | Raised face | High | Superior stress distribution |
| Slip-On Flange | Raised face | Medium | Easy installation |
The engineering expertise behind every Wenzhou Longan Steel Flat Flange reflects decades of manufacturing experience and strict quality control, making it a trusted choice in global markets.
A Steel Flat Flange can be produced using various materials depending on service conditions:
Common standards include ASME B16.5, ASME B16.47, DIN, EN, JIS, and API 6A. All Wenzhou Longan products strictly follow these specifications to ensure interchangeability and safety.
Choosing a proven supplier like Wenzhou Longan ensures long-term performance and reduced maintenance risks.
| Parameter | Range |
|---|---|
| Nominal Size | DN15 – DN1200+ |
| Pressure Rating | PN16 – PN400 / Class 150 – 2500 |
| Material Options | Carbon Steel, Stainless Steel, Alloy Steel |
Q1: Is a Steel Flat Flange suitable for high-pressure systems?
A: Yes. Advanced designs such as the Wenzhou Longan Steel Flat Flange are engineered for
high-pressure and critical applications.
Q2: What gasket is used with a flat flange?
A: Full-face gaskets are typically recommended to ensure proper sealing.
Q3: Can Steel Flat Flanges be customized?
A: Yes. Size, material, and standard customization are available upon request.
The Steel Flat Flange remains a cornerstone of safe and efficient piping systems. With advanced engineering, strict quality control, and international compliance, Wenzhou Longan Steel Flat Flange products deliver reliability where it matters most.
Contact Us today to discuss your project requirements, request technical drawings, or receive a competitive quotation for your next Steel Flat Flange application.
