🔹 Product Overview
Carbon Steel Plate Flange (Flat Flange / PL Flange) is a cost-effective piping flange manufactured from steel plate by cutting and machining.
It is widely used for low to medium pressure piping systems where reliable sealing and easy installation are required.
Compared with forged flanges, plate flanges offer economic advantages while still meeting international standards for industrial piping connections.
🔹 Key Features
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Material: Carbon steel ASTM A105 / ASTM A516 Gr.70 / ASTM A36
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Manufacturing: Plate cut and CNC machined
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Standards: ASME B16.5, EN 1092-1, DIN, JIS, GOST 12820 / GOST 33259
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Pressure Rating: Class 150 – Class 600 / PN10 – PN40
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Facing Type: RF (Raised Face), FF (Flat Face)
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Cost-effective solution for large diameter and standard pressure systems
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Smooth sealing surface ensures stable gasket performance
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Suitable for welding or bolting connections in piping systems
🔹 Materials & Grades
Common material grades include:
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ASTM A105
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ASTM A516 Gr.70
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ASTM A36
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EN S235JR / P245GH
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GOST 20, 09G2S
Optional materials available upon request.
🔹 Size & Pressure Range
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Size range: DN15 – DN1200 (1/2” – 48”)
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Pressure class:
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ASME: Class 150 / 300 / 600
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EN: PN10 / PN16 / PN25 / PN40
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Custom dimensions according to drawings
🔹 Applications
Carbon Steel Plate Flanges are commonly used in:
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Oil & Gas pipelines
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Water supply & drainage systems
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Chemical and petrochemical plants
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Power generation projects
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HVAC and industrial piping systems
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Shipbuilding and offshore engineering
🔹 Quality Control & Certification
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Raw material inspection & chemical analysis
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Dimensional inspection
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Visual inspection
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Optional NDT testing (UT / MT / PT)
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EN 10204 3.1 / 3.2 certificates available
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Marking includes size, pressure class, material grade, heat number
🔹 Packaging & Delivery
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Packed in seaworthy wooden cases or pallets
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Plastic protectors on sealing faces
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Anti-rust oil coating
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Fast delivery for standard sizes
🔹 Why Choose Our Carbon Steel Plate Flange
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Manufacturer & exporter for global B2B customers
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Compliance with ASME / EN / DIN / GOST standards
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Stable quality and competitive price
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Custom fabrication for special projects
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Professional technical support and fast quotation
🔹 Request a Quote
To receive an accurate quotation, please provide:
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Size (DN or inch)
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Pressure rating (Class or PN)
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Standard (ASME / EN / DIN / GOST)
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Material grade
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Quantity
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Application or project details