Teesside Steelworks is a large steelworks located on the south Tees, Teesside

Teesside

Teesside is the name given to the conurbation in the north east of England made up of the towns of Middlesbrough, Stockton-on-Tees, Redcar, Billingham and surrounding settlements near the River Tees. It was also the name of a local government district between 1968 and 1974—the County Borough of...

, England. It stretches from Redcar

Redcar

Redcar is a seaside resort in the north east of England, and a major town in the unitary authority of Redcar and Cleveland in the ceremonial county of North Yorkshire. It lies east-northeast of Middlesbrough by the North Sea coast...

, where the largest blast furnace

Blast furnace

A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally iron.In a blast furnace, fuel and ore and flux are continuously supplied through the top of the furnace, while air is blown into the bottom of the chamber, so that the chemical reactions...

 in Europe is located, to east Middlesbrough

Middlesbrough

Middlesbrough is a large town situated on the south bank of the River Tees in north east England, that sits within the ceremonial county of North Yorkshire...

 area.

Founded by Dorman Long

Dorman Long

Dorman Long, based in Middlesbrough, North East England, was a major steel producer, which diversified into bridge building, and is now a manufacturer of steel components and construction equipment for bridges and other structures...

 in 1917, the steel produced was used to build the Sydney Harbour Bridge

Sydney Harbour Bridge

The Sydney Harbour Bridge is a steel through arch bridge across Sydney Harbour that carries rail, vehicular, bicycle and pedestrian traffic between the Sydney central business district and the North Shore. The dramatic view of the bridge, the harbour, and the nearby Sydney Opera House is an iconic...

, Tyne Bridge

Tyne Bridge

The Tyne Bridge is a through arch bridge over the River Tyne in North East England, linking Newcastle upon Tyne and Gateshead. It was designed by the engineering firm Mott, Hay and Anderson, who later designed the Forth Road Bridge, and was built by Dorman Long and Co. of Middlesbrough. At the time...

, Auckland Harbour Bridge

Auckland Harbour Bridge

The Auckland Harbour Bridge is an eight-lane box truss motorway bridge over the Waitemata Harbour, joining St Marys Bay in Auckland with Northcote in North Shore City, New Zealand. The bridge is part of State Highway 1 and the Auckland Northern Motorway...

 and many others.

Today steel is made further west at the Corus

Corus Group

Tata Steel Europe is a multinational steel-making company headquartered in London, United Kingdom. It is the second-largest steel-maker in Europe and is a subsidiary of Tata Steel of India, one of the ten largest steel producers in the world.Corus Group was formed through the merger of Koninklijke...

 BOS

Basic oxygen steelmaking

Basic oxygen steelmaking , also known as Linz-Donawitz-Verfahren steelmaking or the oxygen converter process is a method of primary steelmaking in which carbon-rich molten pig iron is made into steel. Blowing oxygen through molten pig iron lowers the carbon content of the alloy and changes it into...

, using iron produced at the company's Redcar blast furnace

Blast furnace

A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally iron.In a blast furnace, fuel and ore and flux are continuously supplied through the top of the furnace, while air is blown into the bottom of the chamber, so that the chemical reactions...

, the largest in Europe. Both sites became part of Tata Steel

Tata Steel

Tata Steel is a multinational steel company headquartered in Jamshedpur, India and part of Tata Group. It is the world's seventh-largest steel company, with an annual crude steel capacity of 31 million tonnes, and the largest private-sector steel company in India measured by domestic production...

when Corus was taken over in 2007.

In light of the termination of a large contract in 2009, 1,700 jobs are to be lost at the plant.

On 24 February 2011, it was announced that Teesside Steelworks has been purchased by Thai Steel giant, SSI.