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The torispherical head 1000 mm Type A is an end component for a vessel, selected according to its design.
Germes-Ural manufactures Type A heads of diameter 1000 mm by cold flanging to GOST 34347-2017 and the agreed drawing. Strength calculations use GOST 34233.2-2017.
Specifications for torispherical heads 1000 mm Type A
| Parameter | Value |
|---|---|
| Diameter D | 1000 mm |
| Profile type | Torispherical, flanged, A |
| Wall thickness s | 6–22 mm; specific configuration subject to design calculations |
| Crown radius R | 1000 mm |
| Knuckle radius r | 100 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 = 1000 mm, Type A
| D, mm | Type | R, mm | r, mm | s, mm | Heights h1 and h2 |
|---|---|---|---|---|---|
| 1000 | A | 1000 | 100 | 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 1000 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 1000 mm, agree the blank, joint preparation and finished Type A profile inspection plan. Radii R = 1000 mm and r = 100 mm are recorded in the working drawing together with thickness and surface requirements.
- Mating diameter 1000 mm and ovality
- Profile R=1000 mm, r=100 mm
- Finished part thickness
- Straight flange profile and edge preparation
- Surface condition and documentation requirements
Applications of torispherical heads 1000 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 1000 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 1000 mm Type A, the catalogue specifies R = 1000 mm and r = 100 mm.
Comparison of three configurations — Type A
All three types are listed for diameter 1000 mm. Compare radii, thickness and calculation parameters rather than mating diameter alone. Use the same pressure, temperature and material data when requesting alternatives.
For an order of 1000 mm Type A, state the drawing number and revision, material, thickness and acceptance requirements. Diameter 1000 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 1000 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 1000 mm checked against the specified datums
- Checks of radii 1000 and 100 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
How can A, B and C prices be compared?
Request options with the same initial conditions: diameter, material, design parameters, quantity and edge preparation.
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 1000 mm Type A, also specify R = 1000 mm and r = 100 mm.
What is the lead time for torispherical head type a 1000 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 1000 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 1000 mm Type A
The head of diameter 1000 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 1000 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 1000 mm Type A. All sizes for this configuration and Other head types in 1000 mm.