Elliptical head 1800 mm — profile diagram

Flare separators (FS)Horizontal air receivers

The elliptical head 1800 mm is a larger shell component requiring assembly, handling and storage planning alongside the design parameters.

Elliptical dish depth for D = 1800 mm is 450 mm. Manufacturing uses the agreed thickness and material with mating geometry inspection.

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Specifications for elliptical heads 1800 mm

Parameter Value
Diameter D 1800 mm
Wall thickness S 3–22 mm
Elliptical dish depth h2 450 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 = 1800 mm

Thickness S, mm Straight flange height h1, mm Elliptical dish depth h2, mm Note
3 To be agreed 450 Individual drawing / technical specification
4 To be agreed 450 Individual drawing / technical specification
5 To be agreed 450 Individual drawing / technical specification
6 40 450 GOST 6533-78, Table 2
8 40 450 GOST 6533-78, Table 2
10 40 450 GOST 6533-78, Table 2
12 40 450 GOST 6533-78, Table 2
14 40 450 GOST 6533-78, Table 2
16 60 450 GOST 6533-78, Table 2
18 60 450 GOST 6533-78, Table 2
20 60 450 GOST 6533-78, Table 2
22 60 450 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 1800 mm

Cold forming and flanging of dished ends

At 1800 mm, uneven deformation during forming or transport becomes more significant. Check profile, ovality, knuckle and surface before the component enters logistics.

Checks during manufacturing include:

  • initial blank thickness and condition;
  • Diameter D = 1800 mm;
  • elliptical dish depth h2 = 450 mm;
  • knuckle geometry and uniformity;
  • component ovality;
  • surface and edge condition.

Applications of the elliptical head 1800 mm

Applications for 1800 mm include industrial separators and underground LPG tanks, with final construction specified by the project.

Underground tanks particularly require location conditions; separators require medium and operating data. Equal size does not imply equal configuration.

Vessel equipment applications
Dished-end profile and manufacturing requirements

GOST 6533-78 — 1800 mm

For the catalogue elliptical profile of diameter 1800 mm, dish depth h2 = 450 mm, or 0,25 of D. Straight flange height h1 depends on thickness and the agreed configuration.

Germes-Ural manufactures heads 1800 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 1800 mm

For D = 1800 mm, agree how the component will be handled and installed at the customer’s assembly facility.

  • thickness S and material grade;
  • required straight flange height h1;
  • equipment application, medium, pressure and temperature;
  • edge preparation and welded joint requirements;
  • loading, storage and handling requirements at the site;
  • weight or lifting equipment restrictions where critical;
  • drawing or technical specification for a project-specific configuration.
Materials for dished-end manufacturing

Materials for the head 1800 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

For underground and oil and gas equipment, steel selection depends particularly on medium and temperature. Size alone does not determine material.

Geometry and quality inspection of dished ends

Quality inspection of heads 1800 mm

The main component parameters are checked before delivery. After geometry inspection, the finished profile must be protected from damage during interim storage and loading.

  • compliance of diameter D = 1800 mm;
  • elliptical dish depth h2 = 450 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 1800 mm

What dish depth and flange height are specified for elliptical head 1800 mm?

For diameter 1800 mm, the typical elliptical dish depth h2 is 450 mm, equivalent to 0,25D.

Can the head 1800 mm be used in industrial separators?

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 D = 1800 mm, agree handling and installation at the customer’s assembly facility. Include thickness, material, h1, quantity, application and any drawing or specification.

Which material grades are available for elliptical head 1800 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 1800 mm be manufactured to a drawing?

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

Where can elliptical head 1800 mm be delivered?

Logistics are part of the 1800 mm order: packing and securing are agreed for the quantity and route.

Packaging of dished ends

Delivery of elliptical heads 1800 mm across Russia

Logistics are part of the 1800 mm order: packing and securing are agreed for the quantity and route.

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

Order elliptical heads 1800 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 1800 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