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Flat flanged head 3700 mm. The flat central section joins the cylindrical straight flange through a formed knuckle.
Germes-Ural manufactures flat flanged heads of diameter 3700 mm to the agreed drawing. Profile and thickness are selected for the equipment; applicable GOST requirements are considered in the project and order.
Specifications for heads 3700 mm
| Parameter | Value |
|---|---|
| Diameter D | 3700 mm |
| Thickness s | 3–18 mm |
| Straight flange h1 | See the table row and agreed drawing |
| Knuckle radius r | 100 mm |
| Central section | Flat |
| Profile height | According to the drawing, including the flange |
| Head type | Flat flanged head |
| Manufacturing | Forming and flanging to the agreed process |
| Documentation | Technical specifications, drawing and applicable GOST requirements |
| Material | Grade and condition according to the specification |
| Inspection | Profile, dimensions, thickness and surface |
| Supply | Russia and CIS countries |
Typical dimensions for D = 3700 mm
| s, mm | h1, mm | r, mm |
|---|---|---|
| 3 | ≥ 10,5 | 100 |
| 4 | ≥ 14 | 100 |
| 5 | ≥ 17,5 | 100 |
| 6 | ≥ 21 | 100 |
| 8 | ≥ 28 | 100 |
| 10 | ≥ 35 | 100 |
| 12 | ≥ 42 | 100 |
| 14 | ≥ 49 | 100 |
| 16 | ≥ 56 | 100 |
| 18 | ≥ 63 | 100 |
The table retains the company’s published dimensions. The combination of size, material and loads is agreed against the drawing; the thickness range does not establish an allowable operating pressure.
Manufacturing heads 3700 mm
For the flat head 3700 mm, checks cover the central surface and the knuckle r = 100 mm. Straight flange length and weld preparation are specified together with thickness and joint design.
- Mating diameter and tolerances
- Agreed profile and smooth transitions
- Finished component thickness
- Straight flange and weld edge preparation
- Compliance of the material with the specification
Applications of heads 3700 mm
Specify the operating requirements for the equipment: Heads for horizontal air receivers, Heads for cylindrical pressure vessels. The size and profile are selected according to the equipment design.
The central flat section is checked for flatness, and the formed edge for radius and thickness. Allowable pressure cannot be assigned from appearance alone: the calculation depends on restraints, loads, openings and dimensions.
Profile 3700 mm and requirements GOST
GOST 34347-2017 sets general technical requirements for welded steel vessels. Calculations for cylindrical and conical components, dished and flat heads use the applicable provisions of GOST 34233.2-2017 and the project documentation.
The catalogue shows the company’s production range. It does not extend the scope of the standards or replace allowable pressure calculations. The profile, radii, heights and finished thickness are agreed in the technical specification and drawing.
Temperature and special steel
A large diameter 3700 mm does not determine material grade. Review temperature, weldability and medium requirements together. For special steels, provide documentation and additional inspection requirements.
For flat flanged heads 3700 mm, include this requirement in the technical specification together with the profile dimensions: r = 100 mm; s = 3–18 mm.
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
Material and operating conditions — 3700 mm
The material grade is matched to the shell, medium and design temperature. For flat flanged heads 3700 mm, state the finished thickness, corrosion allowance, surface and heat treatment requirements. Feasibility of the exact combination is confirmed for the order.
Quality inspection of heads 3700 mm
For the flat head 3700 mm, checks cover the central surface and the knuckle r = 100 mm. Straight flange length and weld preparation are specified together with thickness and joint design.
- Mating diameter and ovality
- Dimensions according to the agreed drawing
- Thickness in inspection zones
- Surface, straight flange and edge
- Openings and additional connections
Why choose Germes-Ural
- Dished end manufacturing since 2004;
- Our own manufacturing facility;
- Flat flanged heads: diameters 600–4300 mm;
- Flat flanged head thickness: 3–18 mm; as specified;
- Manufactured to GOST, technical specifications and customer drawings;
- Quality checks throughout manufacturing;
- Delivery across Russia and CIS countries.
Frequently asked questions
Which steel is suitable for 3700 mm at high temperature?
The equipment design selects the material. A manufacturing review needs the design temperature, medium, thickness and specified steel grade.
Can a dished head be replaced by a flat head of the same diameter?
A replacement requires a design and calculation review. A flat head carries loads differently; equal D and s values do not establish equivalent strength or stiffness.
What thickness is available for flat flanged head 3700 mm?
The published table lists thicknesses of 3–18 mm. Thickness is selected by calculation for the medium and loads. Material, allowances and the condition after forming are recorded in the documentation.
What information is needed for a quotation?
Provide the drawing, material grade, thickness, quantity, operating conditions, edge preparation, openings and inspection requirements. Include the delivery destination and unloading conditions.
What is the lead time for flat flanged head 3700 mm?
The lead time is confirmed after the specification is agreed, taking into account blank availability, batch size and processing operations.
Delivery of heads 3700 mm
Packaging and transport are selected for the actual height, weight and batch quantity. For the flat head 3700 mm, inspection covers the central surface and knuckle r = 100 mm. Straight flange length and weld preparation are specified with the thickness and joint design.
Prepared edges and surfaces are protected during transport. Include unloading conditions and any special packaging requirements in the order.
Order flat flanged heads 3700 mm
Germes-Ural specialists will prepare a quotation and confirm the material, thickness and geometry requirements for your project.