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The torispherical head 3400 mm Type A is an end component for a vessel, selected according to its design.
Germes-Ural manufactures Type A heads of diameter 3400 mm by cold flanging to GOST 34347-2017 and the agreed drawing. Strength calculations use GOST 34233.2-2017.
Specifications for torispherical heads 3400 mm Type A
| Parameter | Value |
|---|---|
| Diameter D | 3400 mm |
| Profile type | Torispherical, flanged, A |
| Wall thickness s | 6–22 mm; specific configuration subject to design calculations |
| Crown radius R | 3400 mm |
| Knuckle radius r | 340 mm |
| Dish depth h2 | According to the agreed drawing |
| Straight flange height h1 | Specified for the thickness and welded joint |
| Manufacturing process | Cold flanging |
| Documentation | GOST 34347-2017, GOST 34233.2-2017, technical specifications and customer drawings |
| Materials | Carbon, low-alloy and stainless steels; other materials as specified |
| Heat treatment | As required by the material and project |
| Inspection | Geometry, thickness, surface and compliance with the specification |
| Delivery | Russia and CIS countries |
Profile dimensions for D = 3400 mm, Type A
| D, mm | Type | R, mm | r, mm | s, mm | Heights h1 and h2 |
|---|---|---|---|---|---|
| 3400 | A | 3400 | 340 | 6–22 | According to the drawing |
R and r follow the company catalogue geometry for Type A: R = 1D and r = 0,1D, referenced to the internal surface. The table does not replace thickness calculations or agreement of the finished heights.
Manufacturing torispherical heads 3400 mm Type A
When forming Type A, checks cover the smooth transition from the crown to the knuckle. The straight flange and edge are prepared for the agreed welded joint. The drawing coordinates these operations with the actual blank thickness and material.
For diameter 3400 mm, agree the blank, joint preparation and finished Type A profile inspection plan. Radii R = 3400 mm and r = 340 mm are recorded in the working drawing together with thickness and surface requirements.
- Mating diameter 3400 mm and ovality
- Profile R=3400 mm, r=340 mm
- Finished part thickness
- Straight flange profile and edge preparation
- Surface condition and documentation requirements
Applications of torispherical heads 3400 mm Type A
Check the requirements for the equipment receiving the head: Heads for industrial separators, Heads for flare separators (FS). These links describe the equipment applications; suitability of a specific head is confirmed by the equipment design.
Specify Type A separately from the diameter. Submit the equipment operating conditions, openings and additional loads for review of the selected profile.
Torispherical head 3400 mm Type A — GOST requirements
Type A combines a spherical crown with a transition to a cylindrical straight flange. The crown and knuckle radii are agreed together because their combination defines the head profile and shell connection.
GOST 34347-2017 sets general manufacturing requirements for welded steel vessels; GOST 34233.2-2017 is used for calculations. The production range and profile radii are checked against the engineering documentation. For 3400 mm Type A, the catalogue specifies R = 3400 mm and r = 340 mm.
Transport dimensions — Type A
Transport planning considers packaging and supports as well as component size. For 3400 mm, provide delivery and unloading conditions. Nominal diameter is not the overall shipping dimension.
For an order of 3400 mm Type A, state the drawing number and revision, material, thickness and acceptance requirements. Diameter 3400 mm does not replace the other specification requirements.
Materials
Carbon steels
20YuCh, 09G2S, St3sp5, St20, 17G1S
Aluminium alloys
AMg3, AMg5, AMg61 (1561), R-1407
Stainless steels
08(12)Kh18N10T, 10Kh17N13M2T, AISI 321, AISI 304, AISI 316Ti and Other
Titanium alloys
VT1-0, VT5, VT6, VT8, VT9, OT4-O
Quality inspection of heads 3400 mm Type A
The finished Type A profile is checked for mating diameter, ovality, radii and the transition zone. For a welded blank, weld and inspection requirements are specified in the documentation. Allowable pressure is established by calculation, not by the Type A designation.
- Diameter 3400 mm checked against the specified datums
- Checks of radii 3400 and 340 mm
- Finished component thickness measurement
- Inspection of the surface and transition zone
- Checks of the straight flange, edge and opening positions
Why choose Germes-Ural
- Dished end manufacturing since 2004;
- Our own manufacturing facility;
- Torispherical heads: diameters 600–4200 mm;
- Torispherical head thickness: specified within the catalogue range;
- Manufactured to GOST, technical specifications and customer drawings;
- Quality checks throughout manufacturing;
- Delivery across Russia and CIS countries.
Frequently asked questions
Is diameter 3400 mm enough to plan transport?
Height, weight, packaging and load orientation are also required. These are confirmed after the configuration is agreed.
How does this profile differ from other head types?
The catalogue Type A profile uses R = D and r = 0,10D. A change to Type B or C changes the profile and requires a drawing and calculation review.
What information is needed for a quotation?
Provide the design pressure and temperature, medium, material, thickness, profile drawing and quantity. For 3400 mm Type A, also specify R = 3400 mm and r = 340 mm.
What is the lead time for torispherical head type a 3400 mm?
The lead time is confirmed after reviewing the material, thickness, batch size and processing requirements. The indicative lead time of 7 days or more is confirmed in the quotation.
Which material grades are available for torispherical head type a 3400 mm?
The grade is selected to suit the shell material, medium, temperature and welding process. Availability of a particular combination is confirmed after reviewing the project.
Delivery of torispherical heads 3400 mm Type A
The head of diameter 3400 mm Type A is delivered after packaging and transport arrangements are agreed. Vehicle selection takes into account the actual dimensions, component weight and batch quantity.
Include the delivery destination and unloading restrictions in the enquiry. Protection of prepared edges and surfaces is agreed for the project and transport conditions.
Order torispherical heads 3400 mm Type A
Germes-Ural specialists will prepare a quotation and confirm the material, thickness and geometry requirements for your project.
This card describes diameter 3400 mm Type A. All sizes for this configuration and Other head types in 3400 mm.