Torispherical heads DIN 28011 Dished Ends Manufacturer

Introduction to Torispherical Heads DIN 28011 – Dished Ends Manufacturer

Torispherical heads are a crucial component in the manufacturing of pressure vessels, storage tanks, and pipeline systems. As per DIN 28011, Torispherical heads are designed to offer both structural integrity and efficient pressure resistance. These heads are often used in industries such as petrochemical, oil and gas, and manufacturing where pressure vessels are necessary for containment of liquids or gases. Understanding their technical data and advantages over other head types is essential for making the right choice for your application.

Technical Data for Torispherical Heads DIN 28011

Torispherical heads, designed in compliance with DIN 28011, are characterized by several distinct parameters, all contributing to their robust performance. Below is a breakdown of the key technical data:

• D₀ (External head diameter): The overall diameter of the head.

• Dᵢ (Internal head diameter): The diameter of the internal space of the head.

• CR (Crown Radius): The radius of the crown, typically calculated as CR = D₀.

• KR (Knuckle Radius): The radius of the knuckle, calculated as KR = 0.1 × D₀.

• SF (Straight Flange Height): The height of the straight flange. Standard SF is 3.5t (t being the wall thickness) but can be customized per request.

• DH (Depth of Dishing): The depth of the dished portion of the head, calculated by the formula DH = 0.1935 × D₀ – 0.455t.

• Tᵢ (Total Internal Head Height): The total internal head height, defined as Tᵢ = SF + DH.

Advantages of Torispherical Heads Over Ellipsoidal Heads

When comparing Torispherical heads to ellipsoidal heads, a few key differences come to the forefront. While both are used in pressure vessel applications, their shape, force distribution, manufacturing process, and material requirements differ significantly.

1. Shape:

• Ellipsoidal heads have a more complex shape, resembling half of an ellipsoid. They are deeper and tend to distribute stress more evenly across the structure.

• Torispherical heads, on the other hand, are shallower and have a more straightforward, easier-to-manufacture shape. The head’s transition from the spherical portion to the cylindrical straight edge is smoother, reducing manufacturing complexities.

2. Force Distribution:

• Ellipsoidal heads are known for better stress distribution due to their continuous curvature. This makes them ideal for higher pressure vessels.

• Torispherical heads, while strong, have a discontinuous joint where the spherical part meets the cylinder. This makes them better suited for low-pressure applications, as stress concentrations are higher at the joint.

3. Manufacturing Complexity:

• Ellipsoidal heads require more complex manufacturing processes, often involving spinning or other advanced techniques. The cost and material requirements are also higher due to the deeper and more intricate design.

• Torispherical heads, by comparison, are simpler to produce due to the less complex shape. They are formed using stamping processes that are easier to handle, particularly for large diameters, making them a more cost-effective option.

Applications and Uses

Torispherical heads are versatile components that can be used in various applications:

1. Pipeline Ends: When a pipeline reaches its end, a Torispherical head is welded to seal the pipe. This creates a reliable end for the system, which can withstand significant pressure.

2. Pressure Vessel Storage: These heads are commonly used as the top or bottom closures of pressure vessels, where they provide the necessary structural integrity to handle internal pressure while ensuring ease of manufacturing.

Torispherical Heads vs. Ellipsoidal Heads

Here’s a side-by-side comparison of ellipsoidal and torispherical heads:

Conclusion

Torispherical heads in accordance with DIN 28011 are a valuable choice for pressure vessel and pipeline end applications. While their shape is less complex than ellipsoidal heads, they still offer robust performance under lower pressure conditions, making them suitable for many industries. The simpler manufacturing process not only reduces production time but also minimizes material consumption, ultimately providing a cost-effective solution for many pressure vessel designs.

For those in need of efficient and durable heads, the Torispherical option is an ideal choice. If you need further customization or have specific requirements, you can tailor the specifications such as the straight flange height (SF) to meet your exact needs. Whether you're designing a new pressure vessel or replacing existing heads, Torispherical heads offer a reliable and easy-to-manufacture solution.

Company information

Haipei industry can produce all types of dished ends heads. They can be manufactured from a number of steel types including pressure vessel and boiler quality, chrome moly and stainless steel. The company also offers 2:1 semi ellipsodial, hemispherical petals, torispherical ends as well as conical knuckled sections.

Haipei industry company is a leading producer of various types of dished heads, cones, and other special pressed products in different materials grades like Carbon Steel, Stainless Steel, Duplex, Super Duplex, Aluminum, Nickel and Nickel Alloys, Copper and Copper Alloys, Titanium and Its Alloys, Zirconium and all cladded material combinations.

Our Services

We offer our products in the following materials:

Carbon Steel: SA36, SA516-70, SA387 Grade 5 Class 2 (Forming Only), SA285 Grade C (Forming Only)

Stainless Steel: SA240T304/304L, SA240T316/316L, SA240T304H (Forming Only), SA240T904/904L (Forming Only)

Copper: O-Temper Material (Forming Only)

Aluminum: O-Temper Material (Forming Only)

Quality assurance
Quality is the most important aspect of strength.We will make the material from the material to the end of the monitoring, making sure that each part can be of high quality according to the regulations.Each program will be monitored to ensure any errors in the manufacturing process.
Competitive price guarantee
With years of experience, we can offer our customers the most competitive prices.At the same time, as a powerful factory, we can offer customers more favorable prices than other factories.
Delivery time guarantee
We will strictly control the manufacturing schedule to ensure punctual delivery.It can satisfy the customer's time schedule and ensure the continuous production of customers.

Packaging & Shipping

Carbon steel Hemispherical spherical head for Industrial hot blast stove

1. Iron Frame2. Wooden Box3. Iron pallet4.Wooden pallet.5.Professional fixation6. Curstomed requirment

FAQ

Q: What’s the information should I provide when inquiry?

A: Thanks for your question. If you have drawings, we will be entirely in accordance with production drawings . If you do not have the drawing, you can tell me the product data. There are several important data, such as material, type of head( We have elliptical head, hemispherical head, dished head, flat head, etc. ),diameter, thickness, special tolerances or requirements. We can do the drawings according to your requirements, and you confirm that the final product drawings.

Q: what are surface treatment of the product?

A:Thanks for your question. For carbon steel products, we sandblasting descaling product surface. For stainless steel products, we use acid to remove surface oil and impurities.

Q: How do you ensure the quality of products?

A: Thanks for your question.Our production staff is trained through national quality department, and obtain the corresponding certificate, with years of production and design experience. Weld must undergo X-ray inspection to ensure that no defects.

Q: Can you help us matching related products?

A: Thanks for your question. Our company also is surrounded by a lot of ancillary businesses, such as flanges, boiler, oil refining equipment, etc. We can help you matching the highest quality products with the lowest prices .

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