Standard reference
EN 1092-1 Flanges
EN 1092-1 flange enquiries use a steel flange type, DN and PN designation together with the exact material and facing requirements.
State the flange type
The type designation distinguishes constructions such as plate, weld-neck and other covered arrangements. DN and PN alone do not identify the component. Confirm the type, material and scope under the contract edition and use the corresponding dimensions consistently.
Facing and temperature
Specify the required facing designation and surface finish, and confirm the gasket and mating side. PN is a nominal designation; allowable operating pressure depends on the applicable material and design-temperature requirements. It should not be converted to another standard by a simple label substitution.
Legacy DIN references
Older drawings may use a DIN flange number. Establish the intended type and dimensions before specifying a current EN requirement. Do not assume that every historical DIN callout maps directly to one EN type without reviewing the edition and project details.
Selection reference only. Offered scope, technical compliance and availability are confirmed against the complete project enquiry.
Standard scope and ordering designation
Use EN 1092-1 only within its applicable scope. Obtain numerical dimensions and rating tables from the governing standard and the approved project documentation.
| Parameter / designation | Technical information | Selection requirement |
|---|---|---|
| Standard and edition | EN 1092-1 | Record the exact edition and applicable type/series in the purchase description. |
| Scope | EN 1092-1 flange enquiries use a steel flange type, DN and PN designation together with the exact material and facing requirements. | Check size, material and component scope before applying any table. |
| Dimensional designation | Nominal size, series/type, rating designation and dimensional units. | Matching nominal size does not prove matching bolt circle, thickness or facing. |
| Material-dependent rating | Material group, design temperature and any standard-specific rating rules. | Do not read a class number as a direct pressure limit or transfer ratings between materials. |
| Related requirements | Gaskets, fasteners, attachment welds and the project piping/equipment code. | The flange standard does not replace complete assembly design or installation requirements. |
| Legacy or alternate designations | Existing drawing number, original standard and proposed replacement designation. | Verify dimensions and suitability rather than assuming historical names are equivalent. |
Compare related options
Compare EN 1092-1 Flanges with the related forms or references below. A related product is not necessarily a permissible substitute.
| Related product / reference | Distinction | Check before selection |
|---|---|---|
| DIN Flanges | DIN describes a standards system, not one flange specification. A DIN flange enquiry needs the full standard number, edition and dimensional designation. | Full DIN number, edition and status required by the contract |
| BS 4504 Flanges | BS 4504 is a legacy flange reference that needs its full designation and contractual context. Confirm whether the project requires the original dimensions or a specified successor standard. | BS 4504 part, edition and full designation |
| Flange Pressure Ratings | A flange class, PN designation or table is not a universal allowable pressure. The design must use the specified standard, material and temperature together. | Exact edition and flange/rating designation |
Inspection, documents and delivery
Define acceptance requirements for EN 1092-1 Flanges in the purchase order. Required examinations and documents depend on the material, design and project specification.
| Review stage | Information to confirm | Order requirement |
|---|---|---|
| Material identity and traceability | Specification, grade, heat/lot identification and the required material certificate. | Agree documentation and marking before manufacture; visual appearance cannot verify alloy identity. |
| Dimensional verification | Critical dimensions from the selected standard or controlled drawing. | Identify inspection points, tolerances, units and drawing revision. |
| Surface and end condition | Gasket-contact surface, attachment end, edges and any coating exclusions. | State finish and visual acceptance criteria; agree protection of machined surfaces. |
| Supplementary examinations | Any specified PMI, NDE, hardness, impact, corrosion or other tests. | Define the method, sampling and acceptance criteria; tests are not automatically included. |
| Assembly compatibility | Adjoining components, weld or mechanical interface and project service conditions. | Design approval and correct assembly remain separate from a dimensional inspection report. |
| Packing and order release | Quantity, identification, surface protection, documents and delivery destination. | Agree preservation, packaging and release requirements with the order. |
Enquiry checklist
Details for EN 1092-1
Specify the complete joint and design conditions. This checklist is not a dimensional table or an engineering approval.
| Item | Requirement |
|---|---|
| Designation | EN 1092-1 edition, type, DN and PN |
| Material | Complete steel designation and condition |
| Facing | Facing code, finish and mating gasket |
| Legacy data | Original DIN drawing or requirement where applicable |
Continue the specification