Standard reference
BS 10 Flanges
BS 10 flange enquiries must state the applicable table as well as the nominal size. A table designation is not interchangeable with an ASME class or a PN label.
Table-based identification
The table is an essential part of the flange designation. Obtain it from the project specification or original drawing along with the flange material and construction. Matching only the nominal size leaves drilling, thickness and other interface requirements unresolved.
Physical fit is not a rating assessment
Verify the flange and mating component dimensions under the required edition. A flange that can be bolted to another component is not thereby suitable for its operating conditions. Review pressure, temperature, material and gasket loading under the applicable design basis.
Replacement work
Record the existing flange dimensions, facing, pipe connection and any site modifications. Resolve missing or conflicting information through the engineering specification. Do not relabel a table flange as PN or ASME Class solely to simplify ordering.
Selection reference only. Offered scope, technical compliance and availability are confirmed against the complete project enquiry.
Standard scope and ordering designation
Use BS 10 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 | BS 10 | Record the exact edition and applicable type/series in the purchase description. |
| Scope | BS 10 flange enquiries must state the applicable table as well as the nominal size. A table designation is not interchangeable with an ASME class or a PN label. | 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 BS 10 Flanges with the related forms or references below. A related product is not necessarily a permissible substitute.
| Related product / reference | Distinction | Check before selection |
|---|---|---|
| AS 2129 Flanges | AS 2129 flange enquiries must specify the applicable table, material and connection form. Table designations cannot be replaced with an assumed PN or ASME class. | AS 2129 edition, table and nominal size |
| 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 BS 10 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 BS 10
Specify the complete joint and design conditions. This checklist is not a dimensional table or an engineering approval.
| Item | Requirement |
|---|---|
| Designation | BS 10 edition, table and nominal size |
| Construction | Material, pipe connection and flange form |
| Interface | Facing, drilling and mating component drawing |
| Service | Design pressure, temperature and gasket requirements |
Continue the specification