BS flange series
BS 4504 / BS 10:1962
Select a BS flange using the exact standard and, where required, the table designation. Check the pipe bore, bolt circle and facing against the mating equipment rather than relying on a nominal size alone.
- Standards referenced
- BS 4504 or BS 10:1962 — separate references; exact table/edition TBC.
- Material families — separate options
- Carbon steel; stainless steel; alloy steel. Exact grade and product form TBC.
- PN labels in the introduction
- PN6 / PN10 / PN25 / PN40
- PN designations listed
- PN2.5 / PN6 / PN10 / PN16 / PN25 / PN40 — exact standard/type pairing TBC.
- Structure options listed
- Slip-on; weld neck; plate; blind; socket weld; threaded; lap joint.
- Ordered size and drilling
- TBC — no size-by-size dimensional table is published on this product page.
- Pressure–temperature rating
- TBC for the selected material, standard, size and operating temperature.
Confirm configuration, price, quantity and lead time for each enquiry.
Selection questions
What should I include in a flange enquiry?
Provide standard and edition, size, material specification and grade, type, pressure designation, facing, quantity, and design pressure/temperature. Include a mating drawing when drilling or bore dimensions are critical.
Does the pressure designation equal the working pressure?
No single operating-pressure value follows from PN or Class alone. Confirm the applicable pressure–temperature rating for the selected standard, material and temperature.
Can flanges of the same nominal size be connected directly?
Check the exact standard, bolt-hole count and diameter, bolt circle, bore, facing and gasket arrangement. A matching size label alone does not establish interchangeability.
Specifications compiled from available product documents。Dimensions, performance and suitability are subject to confirmed drawings and ordering documents.
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