Plate Flange (PL)
Yunming Metal offers stainless steel plate flanges (PL) in DN15–DN3000 sizes. Cost-effective and easy to install, these flanges are designed for low to medium pressure pipelines in water, gas, HVAC, and industrial systems. Compliant with ANSI, EN, and JIS standards.
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Product Overview
Plate flanges (PL flanges) are flat, circular flanges that are directly welded onto pipes for secure sealing and connection. Featuring a simple structure without a hub or neck, they are widely used in low to medium pressure applications. Stainless steel plate flanges are corrosion-resistant and cost-effective, ideal for water, gas, chemical, and HVAC systems. Available from DN15 to DN3000, they comply with ANSI, EN, and JIS standards.
Application Areas
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Water supply and drainage systems
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Oil and gas transmission lines
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HVAC and fire protection pipelines
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Chemical and food processing plants
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Low-pressure steam and air distribution networks
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Shipbuilding and marine installations
Product Features
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Flat disk design enables easy welding and alignment
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Suitable for low- and medium-pressure pipelines
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Available in raised face (RF) and flat face (FF) configurations
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Manufactured from stainless steel grades such as 304, 316L, 321, 904L
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Wide compatibility with ANSI, EN, JIS, DIN, and ISO standards
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CNC-machined sealing face and bolt holes for precise fit
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Easy to install and cost-efficient for standard pipeline connections
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Custom drilling and surface finish available on request
Technical Specifications
| Parameter | Range |
|---|---|
| Nominal Size (DN) | DN15 – DN3000 |
| Outside Diameter (OD) | 34 mm – 3200 mm (approx. 1⁵⁄₁₆″ – 126″) |
| Thickness (T) | 6 mm – 120 mm (approx. ¼″ – 4¾″) |
| Pressure Ratings | Class 150 – Class 2500 / PN6 – PN100 |
| Material Grades | ASTM A182 F304 / F316 / F316L / F321 / 904L / 2205 etc. |
| Standards | ANSI B16.5, EN 1092-1, JIS B2220, DIN, BS, GB, ISO |
| Type | Plate Flange (PL) – with flat or raised face |
| Connection Type | Butt weld connection to pipe end |
| Surface Finish | CNC machined face, anti-rust oil coating |
| Application | Water, gas, HVAC, chemical, fire protection, general industrial piping |
Manufacturing Process
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Material Preparation – Stainless steel plates or billets selected by grade
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Cutting & Forging – Blanks are cut or forged to specific size and shape
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CNC Machining – Bolt holes, sealing surface, and outer diameter machined precisely
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Surface Treatment – Anti-rust coating applied, polishing if needed
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Inspection – Dimensional checks, surface smoothness, and standard compliance
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Marking & Packaging – Flanges are marked per standard and securely packaged for export
FAQ
Q1: What size range can you supply for plate flanges?
A: We offer plate flanges from DN15 to DN3000 (approx. ½″ to 120″) with customized drilling.
Q2: Are stainless steel plate flanges suitable for high pressure?
A: Plate flanges are primarily used for low to medium pressure systems. For higher pressure, consider welding neck or socket weld types.
Q3: Can you provide plate flanges with specific drilling templates?
A: Yes. We offer custom drilling patterns and bolt circle dimensions per client request.
Q4: What face types do you offer?
A: Raised face (RF) and flat face (FF) options are available depending on application needs.
Q5: Are your flanges compliant with international standards?
A: Absolutely. We follow ANSI, EN, JIS, DIN, and ISO flange standards.
Still have questions?
Feel free to contact us for more details or to discuss your custom stainless steel plate flange requirements. Our technical support team is ready to assist with specifications, certifications, and delivery.
