ASME Segmented Hemispherical Tank Heads

Large-diameter hemispherical solutions for pressure applications

Commercial Metal Forming supplies ASME segmented hemispherical tank heads for applications requiring the strength and pressure-handling advantages of a hemispherical design at sizes beyond conventional die-forming capabilities.

Individual sections are formed and joined to create hemispherical shapes in virtually any required size. Customers can choose from multiple fabrication and delivery configurations to support their production, transportation and field-assembly needs.

Over 300 part numbers in stock and ready to ship

ASME Segmented Hemispherical specifications

  • Product Type: Segmented hemispherical tank head
  • Construction: Multiple formed sections joined to create a hemisphere
  • Available Thickness: Segmental sections up to 1½ inches thick
  • Available Sizes: Hemispherical shapes of virtually any size
  • Supply Options: Fully assembled, trim-fit and knocked down, or untrimmed and unassembled
  • Primary Application: Large pressure vessels and tanks for liquids or gases under pressure
  • Available Weld Prep: Trimmed edges, bevels, flat lands, code joggles and custom configurations

What Are ASME Segmented Hemispherical Tank Heads?

ASME segmented hemispherical tank heads are created from multiple individually formed metal sections rather than a single blank. Those sections are positioned and welded together to form the finished hemispherical shape.

This production method allows Commercial Metal Forming to accommodate large or specialized dimensional requirements while retaining the geometry associated with hemispherical pressure-vessel heads. Depending on the customer’s needs, the sections may be supplied as a complete assembly or prepared for final assembly at another facility or project site.

Key Attributes:

  • Formed from multiple individual sections
  • Suitable for large-diameter requirements
  • Available in several levels of assembly
  • Designed for pressure-related tank and vessel applications
  • Adaptable to project-specific fabrication and shipping needs
  • Available with customized edge and weld preparation

Common Applications

  • Large pressure vessels
  • Liquid-storage tanks operating under pressure
  • Gas-storage vessels
  • Industrial processing equipment
  • Large-diameter tank assemblies
  • Field-assembled vessel systems
  • Specialized applications with transportation or facility-size limitations

Frequently asked questions

How are segmented hemispherical tank heads manufactured?

Individual metal sections are formed and then welded together to create a complete hemispherical shape.

What material thicknesses are available?

The supplied client information states that segmental sections are available up to 1½ inches thick from Commercial Metal Forming’s California plant.

Do segmented hemispherical heads have to be shipped fully assembled?

No. They may be supplied completely assembled, trim-fit and knocked down, or untrimmed and unassembled.

Are weld-preparation options available?

Yes. Available options include inside or outside bevels, flat lands, code joggles, various offsets and custom weld-prep configurations.

What information is needed for a quote?

Customers should provide the required diameter, material specification, thickness, quantity, assembly preference, tolerances and any trimming or weld-preparation requirements.

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Commercial Metal Forming can deliver precision-formed tank heads that meet your exact requirements. What is your project?