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The elliptical head 700 mm is used in vessels, tanks and related equipment, including equipment designed for pressure service.
Germes-Ural manufactures elliptical heads of diameter 700 mm by cold flanging to GOST 6533-78, technical specifications and customer drawings.
Specifications for elliptical heads 700 mm
| Parameter | Value |
|---|---|
| Diameter D | 700 mm |
| Wall thickness S | 3–22 mm |
| Elliptical dish depth h2 | 175 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, boilers and heat-exchange equipment |
| 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 = 700 mm
| Thickness S, mm | Straight flange height h1, mm | Elliptical dish depth h2, mm | Note |
|---|---|---|---|
| 3 | To be agreed | 175 | Individual drawing / technical specification |
| 4 | 25 | 175 | GOST 6533-78, Table 2 |
| 5 | 25 | 175 | GOST 6533-78, Table 2 |
| 6 | 25 | 175 | GOST 6533-78, Table 2 |
| 8 | 25 | 175 | GOST 6533-78, Table 2 |
| 10 | 25 | 175 | GOST 6533-78, Table 2 |
| 12 | 25 | 175 | GOST 6533-78, Table 2 |
| 14 | 25 | 175 | GOST 6533-78, Table 2 |
| 16 | 40 | 175 | GOST 6533-78, Table 2 |
| 18 | 40 | 175 | GOST 6533-78, Table 2 |
| 20 | 40 | 175 | GOST 6533-78, Table 2 |
| 22 | 40 | 175 | 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 700 mm
Elliptical heads 700 mm are manufactured on cold flanging equipment. This process provides consistent geometry, a uniform knuckle and repeatable profiles for individual and batch production.
Checks during manufacturing include:
- blank thickness;
- head diameter and height;
- elliptical dish profile;
- knuckle and flange quality;
- ovality;
- surface condition.
Applications of elliptical heads 700 mm
Elliptical heads of diameter 700 mm are used in:
- pressure vessels;
- horizontal and vertical tanks;
- tanks for liquids and gases;
- oil and gas equipment;
- chemical processing equipment;
- food and pharmaceutical tanks;
- separators and air receivers;
- boilers and heat-exchange equipment.
GOST 6533-78 — 700 mm
Elliptical flanged heads are used in vessels and tanks where strength, tightness and stress distribution are design considerations. For diameter 700 mm, the elliptical dish depth is 175 mm, with the catalogue value h2 = 0,25D.
Germes-Ural manufactures elliptical heads 700 mm with reference to GOST 6533-78, GOST 34347-2017, design documentation and the customer specification. An individual drawing can be agreed where required.
Features of the elliptical head 700 mm
- load distribution through the vessel structure;
- reduced stress concentration in the transition region;
- applications in pressure equipment;
- lower weight compared with a flat design where supported by the design calculations;
- manufacturing in different specified steel grades;
- manufacturing to GOST, technical specifications and customer drawings.
Materials
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
The material for an elliptical head 700 mm is selected for the equipment operating conditions. The review covers the medium, pressure, temperature, corrosion resistance and vessel documentation.
Quality inspection
Before delivery, the elliptical head 700 mm is checked for:
- compliance of diameter and height with the specified dimensions;
- metal thickness checks;
- surface quality inspection;
- knuckle and flange inspection;
- compliance with GOST and the agreed technical specification.
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
What is the lead time for elliptical head 700 mm?
Lead time depends on thickness, steel grade, batch size, material availability and additional requirements. The indicative lead time is 7 days or more after the order parameters are agreed; the quotation confirms the schedule.
Can elliptical head 700 mm be manufactured to a drawing?
Yes. Germes-Ural manufactures elliptical heads to GOST, technical specifications and individual customer drawings.
What dish depth and flange height are specified for elliptical head 700 mm?
For an elliptical head of diameter 700 mm, the elliptical dish depth h2 is 175 mm. The catalogue value is 0,25 of diameter D.
Which material grades are available for elliptical head 700 mm?
Available materials include carbon, low-alloy, stainless and special steels: St3, St20, 09G2S, 17G1S, 08Kh18N10T, 12Kh18N10T, AISI 304, AISI 321 and AISI 316Ti; other materials can be agreed.
Can heat treatment be included?
Yes. Heat treatment is included where specified by the project, the technical specification or material requirements.
Where can elliptical head 700 mm be delivered?
Elliptical heads 700 mm can be delivered across Russia and CIS countries, including Yekaterinburg, Moscow, Saint Petersburg, Chelyabinsk, Tyumen, Perm, Ufa, Kazan, Samara and Novosibirsk.
Delivery of elliptical heads 700 mm across Russia
Germes-Ural supplies elliptical heads of diameter 700 mm across Russia and CIS countries. Delivery can be arranged through a transport company, a dedicated vehicle or a consolidated shipment.
The delivery method is selected for the component dimensions, batch weight, packaging requirements and schedule. Our specialists will prepare a quotation and confirm the manufacturing specification.
Order elliptical heads 700 mm
Germes-Ural specialists will prepare a quotation and confirm the material, thickness and geometry requirements for your project.
This page describes elliptical heads of diameter 700 mm. The complete size range is listed under Elliptical heads.
Domed flanged headsFlanged conical headsFlat flanged heads