Plate Flange (Flat Flange)

Overview

Plate Flanges (PL Flanges) are manufactured by cutting or machining from steel plates and are designed for low- to medium-pressure piping systems. Compared with forged flanges, PL Flanges provide a cost-effective solution while maintaining reliable sealing performance for industrial pipelines.

Produced in accordance with international standards, our Plate Flanges are widely applied in water treatment, oil & gas, chemical, petrochemical, and general industrial piping systems worldwide.

Product Features

  • Manufactured from Steel Plate: Produced by cutting and machining from carbon steel or stainless steel plates.

  • Cost-Effective Solution: More economical than forged flanges for non-critical applications.

  • Reliable Sealing Performance: Suitable for low- to medium-pressure pipelines.

  • Wide Size Range: DN15 – DN4000 (custom sizes available).

  • Pressure Ratings: PN 6 – PN 40; ASME Class 150 – 300 (project dependent).

  • Facing Types: RF (Raised Face), FF (Flat Face), RTJ (optional).

  • Custom Fabrication: Available according to drawings and project requirements.

Standards Compliance

Our Plate Flanges are manufactured according to major international standards:

  • EN 1092-1 (Type 01 Plate Flange)

  • DIN Standard Flanges

  • GOST 12820 / GOST 12821 – Russian standard

  • JIS B2220 – Japanese standard

  • Custom Standards – Available upon request

Particularly suitable for projects following EN / DIN / GOST standards.

Materials & Grades

  • Carbon Steel: ASTM A36, EN S235JR, S275JR, S355JR

  • Stainless Steel: ASTM A240 304 / 316

  • Low Temperature Steel: ASTM A516 Gr.60 / Gr.70

  • Special Materials: Available upon request

Plate materials are selected to ensure good weldability and mechanical performance.

Applications

Plate Flanges are widely used in:

  • Water supply and wastewater treatment systems

  • Oil & gas and chemical pipelines (non-critical service)

  • Industrial fluid transmission systems

  • HVAC and fire protection pipelines

  • Storage tanks and low-pressure vessels

Ideal for applications where cost control and functional reliability are priorities.

Why Choose Our Plate Flanges

  • Strict Material Control: Verified steel plates with mill test certificates

  • Precision Machining: Accurate bolt holes and smooth sealing surfaces

  • Standards Compliance: EN, DIN, JIS, GOST, or custom standards

  • Flexible Production: Small batches or large project quantities

  • Global Export Experience: Trusted supplier for international B2B markets

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