DIN Plate Flange

Overview

DIN Plate Flange refers to a plate-type flange manufactured in accordance with DIN standards (commonly aligned with European flange systems and widely used across Europe, the Middle East, Africa, and many international EPC projects). It is typically produced from steel plate by cutting and machining, with precise bolt-hole drilling to match DIN flange dimensions.

DIN Plate Flanges are widely applied in water supply, fire protection, HVAC, and general industrial piping, especially where cost efficiency, standard compatibility, and reliable performance are required.

Product Description

DIN Plate Flanges are manufactured from carbon steel or stainless steel plate and machined to meet DIN dimensional tolerances. They are available in multiple pressure ratings such as PN6 / PN10 / PN16 / PN25 / PN40, depending on the system design.

This type of flange is commonly used for connecting pipes, valves, pumps, and fittings, providing a secure bolted joint with a gasket sealing surface.

Typical specifications:

• Product: DIN Plate Flange

• Standard: DIN (commonly equivalent to EN flange dimensions depending on project requirements)

• Size range: DN15 – DN2000 (custom available)

• Pressure ratings: PN6 / PN10 / PN16 / PN25 / PN40

• Facing types: FF (Flat Face), RF (Raised Face)

• Materials: Carbon Steel, Stainless Steel

• Surface finish: Machined sealing face, anti-rust oil or coating as required

Flange production process

Factory Showcase

FAQ

Q1: What does “DIN” mean for flanges?

DIN refers to German industrial standards defining flange dimensions, drilling patterns, pressure ratings, and tolerances. DIN flange dimensions are widely used internationally in projects that follow European standards.

Q2: Is DIN Plate Flange the same as EN 1092-1 flange?

Many DIN flange dimensions have been harmonized into EN 1092-1. In practice, customers may still refer to “DIN flanges,” but production is often done according to EN 1092-1 dimensions.
To avoid mismatch, always confirm the exact standard version and drilling requirement.

Q3: What pressure ratings are commonly supplied?

Common DIN/European pressure ratings include:

• PN10 / PN16 for waterworks and fire protection

• PN25 / PN40 for higher-pressure industrial systems

Q4: What is the difference between DIN Plate Flange and DIN Slip-On Flange?

A DIN Plate Flange is a flat plate-type flange, while a DIN Slip-On Flange (often equivalent to EN 1092-1 Type 02) has a hub/neck and is designed for slip-on welding over a pipe.
Plate flanges are typically more economical; slip-on flanges provide better alignment and slightly higher mechanical strength.

Q5: What facing types are available for DIN Plate Flanges?

Both are common:

• FF (Flat Face) – widely used for ductile iron valves and waterworks

• RF (Raised Face) – used for many steel piping systems with specific gasket designs
  Confirm gasket type and system standard before final selection.

Q6: What materials can you supply?

Common materials include:

• Carbon steel (e.g., P235GH / S235JR equivalents depending on project specs)

• Stainless steel (e.g., F304/F316 equivalents)
  Exact grade should follow the customer’s specification and applicable standard.