1. Home
  2. Renewables
  3. Ocean Thermal Structures
Renewables · Tidal, Wave & Ocean

Ocean Thermal Structures

The steel frames that carry the heat exchangers and seawater pipes of an ocean thermal energy plant: columns, floors, ring girders, pipe guides and access.

Explore the 3D model Send us a drawing
Allmarc 3D model · to scale
Explore the model

How it is built.

Scroll: the camera moves to each part in turn and ends on the exploded view. Drag to turn it round yourself.

Loading model 0%

01 / 05

A frame round two big exchangers

An ocean thermal plant runs warm and cold seawater through tall heat exchangers. The steel carries them and their big pipes.

Scroll to see how it is built · drag to turn it round

02 / 05

The frame

Heavy H columns, beams at every level and braced side frames, cut and drilled on the beam lines.

How is it possible at Allmarc?

Used here for: The frame

  • Plates matched and tack-welded
  • Automatic feed and stitch welding
  • H and I sections built from plate
All our machinery
Kotec newRun10DX CNC beam drilling line in the Allmarc works

Used here for: The frame

Heavy profiles that need precise holes, where plasma cannot do the job: the lower structure and panel borders of a ground flare, and every bolted PEB and multi-storey frame.

  • H-beams up to 1,000 x 500 mm
  • Drills 3 faces in one pass
  • Channels, angles and box sections
All our machinery

03 / 05

Ring girders and guides

Rolled ring girders that carry each exchanger, and guides that hold the seawater pipes.

How is it possible at Allmarc?
Three-roll pinch cum pyramid plate rolls in the Allmarc works

Used here for: Ring girders and guides

  • Rolls plate up to 40 mm
All our machinery

Used here for: Ring girders and guides

Tapered rafters and other non-uniform built-up sections, welded faster and with deeper penetration.

  • 40 m, state of the art
  • No programming: weld lines taken from the 3D model
  • Tandem torch: two wires at once
All our machinery

04 / 05

Floors and access

Galvanised grating, handrails and a stair to every level.

05 / 05

Every part, apart

Frame, girders, floors and access.

Why Allmarc

Experience you can trust.

We fabricate to your drawings and prove the fit in our own bay before anything ships. Open any line for the detail.

Talk to an engineer
Repeat parts, identical
  • Laser cutting, CNC punching and robotic welding, so the 1,000th table bolts up like the first.
  • Jigs and fixtures made in house for every repeat part.
Heavy and light, one roof
  • Rolled plate and heavy sections for fixtures, skids and gantries.
  • Light-gauge, punched parts for structures and walkways.
Access we make ourselves
  • Grip-Strut: the only maker in India, planks up to 8 m.
  • R13 anti-slip, 40% lighter than bar grating.
Scale for a pipeline of sites
  • 4 plants at Kanbha; about 6,000 T a month from November 2026.
  • Clients include Adani Renewables, Adani New Industries, Suzlon Energy and Kee Safety.
Related

Renewables

Renewables · Solar 3D model of Inverter & Transformer Skids Power station skids for solar and storage blocks Inverter & Transformer Skids Renewables · Wind 3D model of Nacelle & Hub Assembly Fixtures Stands, platforms and turntables for the factories that build wind turbines Nacelle & Hub Assembly Fixtures Renewables · Hydrogen & Storage 3D model of BESS Skids & Enclosures The steel round a battery energy storage block BESS Skids & Enclosures Renewables · Hydrogen & Storage 3D model of Electrolyser Stack Frames Skids and frames for green hydrogen Electrolyser Stack Frames Renewables · Grid & Access 3D model of Substation Gantries & Supports The steel of a switchyard Substation Gantries & Supports Renewables · Wind 3D model of Monopile & Transition Piece Steel The secondary steel on an offshore wind foundation Monopile & Transition Piece Steel Renewables · Wind 3D model of Offshore Tripod Foundations Tripod foundations for offshore turbines Offshore Tripod Foundations Renewables · Hydropower 3D model of Penstock & Intake Supports The steel that carries a penstock down the hill Penstock & Intake Supports Renewables · Hydropower 3D model of Spillway Gates & Frames Radial gates that control a spillway Spillway Gates & Frames Renewables · Geothermal & Biomass 3D model of Geothermal Wellhead Platforms & Exchanger Supports Access platforms round geothermal wellheads, and the braced tables that carry he Geothermal Wellhead Platforms & Exchanger Supports Renewables · Geothermal & Biomass 3D model of Biomass Silo Supports & Access The steel under and around a pellet silo Biomass Silo Supports & Access Renewables · Hydrogen & Storage 3D model of Hydrogen Tank Supports & Access Saddles, base frames, walkways and stairs for hydrogen storage bullets, so every Hydrogen Tank Supports & Access Renewables · Tidal, Wave & Ocean 3D model of Tidal Turbine Support Structures Seabed support structures for tidal turbines Tidal Turbine Support Structures Renewables · Carbon Capture 3D model of Carbon Capture Unit Structures The steel round a carbon capture absorber Carbon Capture Unit Structures Renewables · Wind 3D model of Wind Tower Sections & Joints Tower sections rolled from heavy plate, welded seam to seam, and finished with m Wind Tower Sections & Joints Renewables · Hydropower 3D model of Turbine & Generator Housings The steel of a hydro powerhouse Turbine & Generator Housings Renewables · Hydropower 3D model of Control Room Enclosures Prefabricated steel control rooms that arrive on a trailer as one piece Control Room Enclosures Renewables · Geothermal & Biomass 3D model of Prefabricated Plant Enclosures Steel-framed buildings for geothermal and other power plants Prefabricated Plant Enclosures Renewables · Geothermal & Biomass 3D model of Borehole Steel Casing Steel casing for geothermal and water wells Borehole Steel Casing Renewables · Hydrogen & Storage 3D model of Fuel Cell Enclosures & Supports Steel enclosures for hydrogen fuel cell units and the raised frames they stand o Fuel Cell Enclosures & Supports Renewables · Tidal, Wave & Ocean 3D model of Wave Energy Anchoring Tripods Seabed tripods that hold wave energy devices Wave Energy Anchoring Tripods Renewables · Carbon Capture 3D model of CO2 Storage Facility Enclosures Steel enclosures for CO2 injection wellheads CO2 Storage Facility Enclosures Renewables · Solar 3D model of Tube Connector Preassembly for Solar Trackers The sleeve that joins two torque tubes on a solar tracker Tube Connector Preassembly for Solar Trackers Renewables · Solar 3D model of Slew Drive Seats for Solar Trackers The seat that carries a tracker’s slew drive on top of its post Slew Drive Seats for Solar Trackers Renewables · Solar 3D model of Base Plates for Lifeline & Handrail Mounting on Solar Rooftops Fall protection for rooftop solar without drilling the roof Base Plates for Lifeline & Handrail Mounting on Solar Rooftops Renewables · Solar 3D model of Solar Walkways & Stairs Safe access onto and along solar arrays Solar Walkways & Stairs Renewables · Wind 3D model of Blade Transport Fixtures Fixtures that carry wind turbine blades by road Blade Transport Fixtures Renewables · Wind 3D model of Wind Tower Internals The steel inside a wind tower Wind Tower Internals Renewables · Wind 3D model of Nacelle Skeleton Frames The tube frame under a wind turbine’s nacelle casing Nacelle Skeleton Frames
Start a project

Have a drawing? Let us build it.

We fabricate to your design, from plate to a packed container. An engineer will tell you honestly how we would build it.

Send us a drawing