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Stockholder & manufacturer · ISO 9001:2015 · Part of the Petrochem Group

Stainless Steel Flanges

Flanges

Stainless and carbon
steel flanges

Weld neck, slip on, blind, socket weld, screwed, lap joint and plate flanges to ASME, EN and BS standards, available from stock or machined to order.

Request a quote Call 01384 400290

Steel flanges from a UK stockist with the range to match your specification

Midsteel holds a broad flange range in stainless steel SA182 F304/L and F316/L and in carbon steel SA105N, SA350 LF2 and S235JR. We stock ASME B16.5 flanges from Class 150 to Class 2500, BS EN 1092-1 flanges from PN10 to PN40, and BS 10 Table D and E flanges for maintenance on older systems.

Our flanges are available either from stock for immediate delivery or customised to suit your needs, with European and non-European origin options. Every flange is supplied with its certification, so you can fit it and sign it off.

Choose a flange range

A stack of stainless steel flanges in assorted sizes and pressure ratings.

Stainless Steel Flanges

SA182 F304/L and F316/L to ASME B16.5, EN 1092-1 and BS 10.View range Carbon Steel Flanges uk

Carbon Steel Flanges

SA105N, LF2 and S235JR to ASME B16.5 and EN 1092-1.View range Diagram of a spectacle blind, spade and spacer

Spectacle Blinds & Spacers

Line blanks machined in-house in carbon, stainless and super duplex.View range

Flange types we supply

Weld neck flanges are the usual choice for high-pressure and high-temperature service, where the tapered hub spreads stress into the pipe. Slip on flanges are quicker to align and weld, and suit lower-pressure lines. Socket weld and screwed flanges are used on small-bore pipework, and lap joint flanges pair with stub ends where lines are dismantled often or where a cheaper backing flange can be used with a stainless stub.

Blind flanges close off the end of a line or a vessel nozzle. For positive isolation during maintenance we also manufacture spectacle blinds, spades and spacers. If you are unsure which type or face finish your system needs, our sales team will talk it through with you.

A stack of stainless steel flanges in assorted sizes and pressure ratings.

Why buy flanges from Midsteel

01

Class 150 to 2500

ASME B16.5 flanges across the full range of pressure classes.

02

European origin available

European origin stainless and carbon forgings where your specification demands them.

03

Special flanges machined

Non-standard drillings, bores and materials made from stock forgings, bar and plate.

04

Certified as standard

ISO 9001, PED and EN 10204 3.1 certification with every order.

  • ISO 9001:2015Lloyd’s (LRQA) approved quality system
  • EN 10204 3.1 certsFull material traceability as standard
  • Same-day serviceAvailable on urgent stock and machined specials
  • In-house machiningSpecials and hard-to-find sizes made to order

FAQs

Flange questions

Can't find the answer? Our sales team can advise on grades, standards and lead times.

Ask a question
ASME B16.5 is the American standard, with pressure ratings given as classes (150#, 300#, 600# and so on) and sizes in inches. BS EN 1092-1 is the European standard, with PN pressure ratings (PN10, PN16, PN25, PN40) and metric dimensions. The two are not interchangeable, so match the flange to the standard your pipework and equipment are built to.
EN 1092-1 identifies flange designs by type: Type 01 is a plate flange for welding, Type 05 a blind flange, Type 11 a weld neck, Type 12 a hubbed slip on and Type 13 a hubbed threaded flange. We stock Types 01, 05, 11, 12 and 13.
Yes. We stock BS 10 Table D and Table E plate slip on and blind flanges, which are still widely needed for repairs and extensions to older UK systems.
Yes. Our in-house machining facility can re-drill, re-bore or fully manufacture special flanges from our stock of forgings, bar and plate.

Need a price or a delivery date?

Send us your enquiry, schedule or drawing and our sales team will come back to you with stock, price and lead time.

Request a quote 01384 400290