Fittings

Flanged plugs

Flanged plugs (blind flanges) according to 33259 / ATK 24.200.02 — for disconnecting flanged pipes and pipeline sections. DN 10-1600, Pn 6-160.

DN 10–1600Roo 6–160ГОСТ 33259 / ATK 24.200blind flangeSteel 20·09Г2С·stainless steel
Flanged plugs
Specifications

Technical parameters

ItemFlange plug (blind flange)
TypeBlind flange without passage
Nominal bore DN10-1600 mm
Nominal pressure PN6-160 bar
It will compact it. surfaceSpanish B, E, F, etc.
MaterialСт20, 09Г2С, 12Х18Н10Т
ConnectionFlanged (bolted)
StandardГОСТ 33259-2015 / ATK 24.200.02.90
Temperature−70…+450 °C
MediumWater, steam, petroleum products, gas
Dimension diagram

Drawing to GOST

D K d b Flange plug (blind flange): D, K, d, n, b — blind disc without passage

The letters on the diagram correspond to the columns of the dimension table below.

Dimensions

Dimension table

DND, mmK, mmd, mmn, pcsb, mm
10906014412
15956514412
201057514414
251158514414
3213510018416
4014511018416
5016012518417
6518014518819
8019516018819
10021518018820
12524521018822
15028024022823
200335295221225
250405355261227
300460410261228
350520470261630
400580525301632
500710650332034
600840770362036

The connection dimensions (D, K, d, n) match the counter flange according to 33259. Values for Ру16 (example); Ру6/10/25/40 and more — on request. b is the thickness.

Applications

Where they are used

  • Blind disconnection of the flange connection/section
  • Crimping and hydro-testing
  • Pipeline conservation and repair
Materials

Steel grades

Ст2009Г2С12Х18Н10Т
Order

What to state when ordering

  • DN and PN
  • Type of sealing surface
  • Steel grade and ГОСТ/ATK
Questions

Frequently asked questions

How does a flange plug differ from a rotary plug?

The flanged (blind flange) is installed instead of the counter flange and completely disconnects the section with a bolted connection. The rotary ("glasses") switches the section between "open" and "turned off" without dismantling.

Do the dimensions match the flange?

Yes — D, K, d, n correspond to the counter flange according to ГОСТ 33259 for the same Dn/Pn.

What is it used for?

For disconnection, crimping, preservation and repair.

What kind of steels?

Ст20, 09Г2С, for aggressive media — 12Х18Н10Т.

Up to what pressure?

By ГОСТ/ATK — up to Ру160.

We will select and supply for your project

Send the parameters (DN, PN, material, GOST) or a specification — we will prepare an offer with lead times.

Request a quote