Elliptical head 1100 mm — profile diagram

Industrial separatorsAir receivers

The elliptical head 1100 mm lies between compact and medium industrial sizes, for designs needing more than a one-metre diameter without a large head.

Elliptical dish depth for D = 1100 mm is 275 mm. Coordinate the profile with shell thickness, flange height and medium requirements during calculations.

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Specifications for elliptical heads 1100 mm

Parameter Value
Diameter D 1100 mm
Wall thickness S 3–22 mm
Elliptical dish depth h2 275 mm
Straight flange height h1 Depends on material thickness and project requirements
Head type Elliptical, flanged
Manufacturing process Cold flanging
Standards and documentation GOST 6533-78, GOST 34347-2017, GOST 34233.2-2017, technical specifications and customer drawings
Materials St3, St20, 09G2S, 17G1S, 08Kh18N10T, 12Kh18N10T and other specified steel grades
Application Vessels, tanks and process equipment according to the project
Heat treatment As required by the project
Quality inspection Checks of geometry, thickness, surface and compliance with the specification
Delivery Russia and CIS countries

Typical dimensions for D = 1100 mm

Thickness S, mm Straight flange height h1, mm Elliptical dish depth h2, mm Note
3 To be agreed 275 Individual drawing / technical specification
4 To be agreed 275 Individual drawing / technical specification
5 To be agreed 275 Individual drawing / technical specification
6 25 275 GOST 6533-78, Table 2
8 25 275 GOST 6533-78, Table 2
10 40 275 GOST 6533-78, Table 2
12 40 275 GOST 6533-78, Table 2
14 40 275 GOST 6533-78, Table 2
16 40 275 GOST 6533-78, Table 2
18 40 275 GOST 6533-78, Table 2
20 40 275 GOST 6533-78, Table 2
22 40 275 GOST 6533-78, Table 2

The straight flange height h1 is selected by diameter and thickness from GOST 6533-78, Table 2 (internal basic diameter). Sizes and thicknesses absent from that table, including 3 mm, require an agreed drawing or technical specification. h2 = D/4 for this elliptical profile.

Manufacturing elliptical heads 1100 mm

Cold forming and flanging of dished ends

At 1100 mm, ovality can affect fitting to an existing shell. After forming, check height and straight flange uniformity as well as overall diameter.

Checks during manufacturing include:

  • initial blank thickness and condition;
  • Diameter D = 1100 mm;
  • elliptical dish depth h2 = 275 mm;
  • knuckle geometry and uniformity;
  • component ovality;
  • surface and edge condition.

Applications of the elliptical head 1100 mm

Related applications include drainage and fire water tanks, with construction requirements specified by their designs.

Drainage and fire water tanks may share nominal D while requiring different materials, thicknesses and inspection.

Vessel equipment applications
Dished-end profile and manufacturing requirements

GOST 6533-78 — 1100 mm

For the catalogue elliptical profile of diameter 1100 mm, dish depth h2 = 275 mm, or 0,25 of D. Straight flange height h1 depends on thickness and the agreed configuration.

Germes-Ural manufactures heads 1100 mm with reference to GOST 6533-78, GOST 34347-2017, GOST 34233.2-2017, calculations and the technical specification. Non-standard parameters are recorded in the agreed drawing.

Ordering requirements for a head 1100 mm

When ordering 1100 mm for a manufactured or purchased shell, provide shell information as well as the head drawing.

  • thickness S and material grade;
  • required straight flange height h1;
  • equipment application, medium, pressure and temperature;
  • edge preparation and welded joint requirements;
  • shell status: designed with the head or already manufactured;
  • tank location: above ground, underground or indoors;
  • drawing or technical specification for a project-specific configuration.
Materials for dished-end manufacturing

Materials for the head 1100 mm

Carbon and low-alloy steels

St3, St20, 09G2S, 17G1S, 20YuCh and Other steel grades

Stainless steels

08Kh18N10T, 12Kh18N10T, 10Kh17N13M2T, AISI 304, AISI 321, AISI 316Ti and equivalents

Aluminium alloys

AMg3, AMg5, AMg6 and other alloys by agreement

Titanium and special alloys

VT1-0, VT5, VT6, OT4-0 and other materials to the design documentation

Underground and outdoor equipment can have different material requirements. Steel grade for D = 1100 mm is selected with the design service conditions.

Geometry and quality inspection of dished ends

Quality inspection of heads 1100 mm

The main component parameters are checked before delivery. Ovality and mating diameter checks help avoid additional adjustment when joining the head to the shell.

  • compliance of diameter D = 1100 mm;
  • elliptical dish depth h2 = 275 mm;
  • metal thickness;
  • ovality and knuckle geometry;
  • surface and edge quality;
  • compliance with GOST, technical specifications or the drawing.

Why choose Germes-Ural

  • Dished end manufacturing since 2004;
  • Our own manufacturing facility;
  • Head diameters from 100 to 4700 mm;
  • Metal thickness from 3 to 40 mm;
  • Manufactured to GOST, technical specifications and customer drawings;
  • Quality checks throughout manufacturing;
  • Delivery across Russia and CIS countries.

Frequently asked questions about the head 1100 mm

What dish depth and flange height are specified for elliptical head 1100 mm?

For diameter 1100 mm, the typical elliptical dish depth h2 is 275 mm, equivalent to 0,25D.

Can the head 1100 mm be used in EP and EPP drainage tanks?

Elliptical heads are used in this equipment class, but the actual diameter, thickness, material and geometry must match the specific vessel design.

What information is needed for a quotation?

For 1100 mm intended for an existing or purchased shell, include shell data with the head drawing. Provide D, thickness, material, h1, quantity and application.

Which material grades are available for elliptical head 1100 mm?

Yes, these materials are in the production range. The exact grade and thickness are confirmed after reviewing medium, temperature, pressure and design requirements.

Can elliptical head 1100 mm be manufactured to a drawing?

Yes. Manufacturing can follow GOST, technical specifications and individual customer engineering documentation.

Where can elliptical head 1100 mm be delivered?

Packaging for 1100 mm is selected to prevent straight flange deformation during loading and transport.

Packaging of dished ends

Delivery of elliptical heads 1100 mm across Russia

Packaging for 1100 mm is selected to prevent straight flange deformation during loading and transport.

Germes-Ural delivers across Russia and CIS countries. Supply details are confirmed for quantity, material, batch weight and destination.

Order elliptical heads 1100 mm

Provide diameter, thickness, material, quantity and equipment application. Germes-Ural specialists will confirm geometry and inspection requirements and prepare a quotation.

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    This page describes elliptical heads of diameter 1100 mm. The complete size range is listed under Elliptical heads.

    Other diameters of elliptical heads

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    Other head types

    Torispherical Flanged conical heads Shallow dished heads Domed flanged heads Flat flanged heads Spherical heads

    Domed flanged headsFlanged conical headsFlat flanged heads