British Mannesmann Tube Co
From Graces Guide
of Salisbury House, London Wall, London, EC.
Works of Landore, South Wales.
1888 Mannesmann Tube Co Ltd registered with £300,000 capital. 
c1890 Took over Landore steel works, Swansea. 
1900 Catalogue of weldless steel tubes, fittings, gas bottles, poles and tubular specialities. 
1900 June. Tramways and Light Railways Exhibition at Islington. Showed traction, arc and trolley poles. 
1913 In order to meet increasing demand, the site for a new tube works was found at Newport, Mon.
1914 Manufacturers of weldless steel tubes. Specialities: weldless steel tubes for boiler, steam and hydraulic purposes, telegraph and traction poles, spigot and faucet pipes, hollow davits, derricks and deck supports, gas cylinders, brass and copper tubes. Employees 1,500 to 1,600. 
1918 The new works was brought into operation. The company decided to restrict the manufacture of the smaller tubes to the Landore works, whilst tubes above 6 inches and up to 16 inches outside diameter would be produced at the Newport works.
1926 The Mannesmann Tube Works, Landore, near Swansea, restarted operations on Monday with supplies of foreign coals, with the hope to be able to maintain work, as they have sufficient coals, it was estimated to last to the end of the coal stoppage.
1936 New company formed United Tube (Holdings) Ltd to acquire British Mannesmann Tube Co. The new company would enter into agreements with Mannesmannrohren Werke, Stewarts and Lloyds, Tube Investments and others.
Sources of Information
- The Engineer of 20th January 1888 p61
- The Engineer 1890/06/27
- The Stock Exchange Year Book 1908
- The Engineer of 11th May 1900 p498
- The Engineer of 29th June 1900 p667
- 1914 Whitakers Red Book
- The Engineer 1920/09/17
- The Times, Jun 06, 1921
- The Engineer 1926/10/15
- The Basic Industries of Great Britain by Aberconway: Chapter IXX
- The Times, Oct 31, 1936
- The Times, 6 May 1936