Plate flange EN1092 PN40
Wide Pressure & Size Adaptability: Suitable for low to medium pressure applications (PN2.5-PN40/Class150-Class300) with size ranges from 1/2" (DN15) to 60" (DN1500). Custom large-diameter models are available for special pipeline needs.
Reliable Sealing Performance: Precision-machined sealing surfaces (RF, FF, etc.) paired with gaskets ensure tight connection, effectively preventing leakage of non-corrosive or moderately corrosive media.
Versatile Material Options: Manufactured from carbon steel, stainless steel (304/316L/SUS304), cast iron, or alloy steel, adapting to industrial pipelines in water supply, heating, chemical, oil & gas, and marine industries.
Global Standard Compliance: Complies with international standards (ASME B16.5, EN 1092-1, JIS B2220, GB/T 9119) and regional specifications, ensuring interchangeability with global pipeline components for cross-border trade.
1. Overview
The Slip On Flange (also known as PL Flange) is a widely used piping connection component characterized by its simple structure, easy installation, and cost-effectiveness. Designed for low to medium-pressure industrial applications, it features a flat disc shape with a central hole that slides over the pipe end, secured by fillet welding on both the inner and outer sides of the flange. Compliant with global standards, it is extensively utilized in water supply, heating, chemical, oil & gas, and general industrial pipeline systems.
2. Core Structure
Flange Disc: Circular flat disc with evenly distributed bolt holes around the circumference for fastening to matching flanges. The disc thickness varies by pressure rating and size to ensure structural stability.
Central Hole: The inner diameter of the hole is slightly larger than the pipe outer diameter, allowing the flange to slip directly over the pipe end for quick alignment.
Welding Grooves: Designed on the inner and outer edges of the disc’s backside to facilitate fillet welding with the pipe, ensuring secure connection without compromising the pipe’s inner wall integrity.
Sealing Surface: Precision-machined on the front side of the disc, available in common types such as Raised Face (RF), Flat Face (FF), and Smooth Face (SF), paired with gaskets to achieve leak-proof sealing.
3. Key Specifications
4. Product Advantages
Cost-Effective: Simple structural design and mature manufacturing process reduce production costs, making it an economical choice for large-scale pipeline projects.
Easy Installation: Slip-on design allows quick alignment and fillet welding, reducing construction difficulty and labor time compared to welding neck flanges.
Wide Application Range: Suitable for low to medium pressure (up to PN40/Class600) and various media (water, oil, gas, moderately corrosive fluids), adapting to multiple industrial scenarios.
Reliable Sealing: Precision-machined sealing surfaces (Ra≤3.2μm) paired with compatible gaskets ensure tight connection, minimizing leakage risks.
Lightweight & Space-Saving: Compact structure and lighter weight save installation space and reduce transportation costs, ideal for limited-space layouts.
Global Compatibility: Complies with international standards, ensuring interchangeability with global pipeline components for cross-border trade and project collaboration.
Low Maintenance: Durable materials and stable structure reduce wear and tear, facilitating easy disassembly, replacement, and maintenance.
