
The elliptical head 2100 mm is used in large process and tank equipment. Agree design parameters before manufacturing: correcting a large formed component is harder than clarifying initial requirements.
For D = 2100 mm, h2 = 525 mm. The specified thickness and steel grade are manufactured with profile, knuckle and mating diameter checks.
Specifications for elliptical heads 2100 mm
| Parameter | Value |
|---|---|
| Diameter D | 2100 mm |
| Wall thickness S | 3–22 mm |
| Elliptical dish depth h2 | 525 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 = 2100 mm
| Thickness S, mm | Straight flange height h1, mm | Elliptical dish depth h2, mm | Note |
|---|---|---|---|
| 3 | To be agreed | 525 | Individual drawing / technical specification |
| 4 | To be agreed | 525 | Individual drawing / technical specification |
| 5 | To be agreed | 525 | Individual drawing / technical specification |
| 6 | To be agreed | 525 | Individual drawing / technical specification |
| 8 | To be agreed | 525 | Individual drawing / technical specification |
| 10 | To be agreed | 525 | Individual drawing / technical specification |
| 12 | To be agreed | 525 | Individual drawing / technical specification |
| 14 | To be agreed | 525 | Individual drawing / technical specification |
| 16 | To be agreed | 525 | Individual drawing / technical specification |
| 18 | To be agreed | 525 | Individual drawing / technical specification |
| 20 | To be agreed | 525 | Individual drawing / technical specification |
| 22 | To be agreed | 525 | Individual drawing / technical specification |
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 2100 mm

Preparation for 2100 mm includes checks of the initial sheet, forming parameters and inspection sequence. Large-head batches require consistent manufacturing conditions for every item.
Checks during manufacturing include:
- initial blank thickness and condition;
- Diameter D = 2100 mm;
- elliptical dish depth h2 = 525 mm;
- knuckle geometry and uniformity;
- component ovality;
- surface and edge condition.
Applications of the elliptical head 2100 mm
Related applications include BUON units and above-ground LPG tanks.
- BUON oil dehydration units
- Above-ground LPG tanks
- other vessels where D = 2100 mm is specified in the design documentation.
These equipment classes are designed individually. D = 2100 mm describes production availability rather than a fixed equipment standard.


GOST 6533-78 — 2100 mm
For the catalogue elliptical profile of diameter 2100 mm, dish depth h2 = 525 mm, or 0,25 of D. Straight flange height h1 depends on thickness and the agreed configuration.
Germes-Ural manufactures heads 2100 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 2100 mm
For 2100 mm, include a specification or drawing with all inspection dimensions to avoid ambiguity about nominal diameter.
- thickness S and material grade;
- required straight flange height h1;
- equipment application, medium, pressure and temperature;
- edge preparation and welded joint requirements;
- specification with inspection dimensions and tolerances;
- documents accompanying the finished batch;
- drawing or technical specification for a project-specific configuration.

Materials for the head 2100 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
Material for oil and gas equipment follows the medium, temperature and project requirements. Grade availability is confirmed before production.

Quality inspection of heads 2100 mm
The main component parameters are checked before delivery. A large diameter requires checks in several sections and at the mating region, rather than one measurement alone.
- compliance of diameter D = 2100 mm;
- elliptical dish depth h2 = 525 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 2100 mm
What dish depth and flange height are specified for elliptical head 2100 mm?
For diameter 2100 mm, the typical elliptical dish depth h2 is 525 mm, equivalent to 0,25D.
Can the head 2100 mm be used in BUON oil dehydration units?
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 2100 mm, include all inspection dimensions to avoid nominal diameter ambiguity. Provide D, thickness, material, h1, quantity, application and any drawing or specification.
Which material grades are available for elliptical head 2100 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 2100 mm be manufactured to a drawing?
Yes. Manufacturing can follow GOST, technical specifications and individual customer engineering documentation.
Where can elliptical head 2100 mm be delivered?
For D = 2100 mm, delivery is planned by shipping units and the sequence required at the customer’s site.

Delivery of elliptical heads 2100 mm across Russia
For D = 2100 mm, delivery is planned by shipping units and the sequence required at the customer’s site.
Germes-Ural delivers across Russia and CIS countries. Supply details are confirmed for quantity, material, batch weight and destination.
Order elliptical heads 2100 mm
Provide diameter, thickness, material, quantity and equipment application. Germes-Ural specialists will confirm geometry and inspection requirements and prepare a quotation.
This page describes elliptical heads of diameter 2100 mm. The complete size range is listed under Elliptical heads.