Your forgot to mention the Reynolds 9 series of high end steel such as the
reynolds 953 ,the
Reynolds 931, the
Reynolds 921 and the well known
Reynolds 631 and
Reynolds 853 being some of the highest grade steels on themarket,the 631 and 853 started to be very popular in mid 90's and had a much better durability,comfort and responsiveness than any carbon,aluminium or perhaps titanium frame .Merlin, Moots,Kona, Linskey and Litespeed used exclusively Reynolds Titanium Ti 3AL-2.5V tubing
Reynolds Ti 3 Al 2.5V. Italians with Columbus have
Columbus Omnicrom the base for
HSS, Spirit, Life, Max, SL, SLX et CENTO rear triangle frameset tubes and they also have Columbus XCR a competitor of the Reynolds 931 but below in quality compared to the 953. Columbus was known to have introduced Nivacrom with the Genius series of tubes back in 1992 and Thermacrom with Foco and Ultrafoco in1996. Dedacciai is also an important player when it comes to steel tubing with the Dedacciai Dr Zero and Dr Zero 1. True temper a well known name in frame building exited the bike industry 6 years ago true temper's good bye to the bike industry . Slightly less known were french manufacturers of high grade steel tubes such as Excell (used exclusively by framebuilder Jean Marie Pilorget) and Vitus which proposed at the time high end steel for road and Mtb frames back then. Tange (japanese maker) is still present not as used as Reynolds, Columbus or Deda but still present with its series of tange series of tubes.Tange was popular in the 80's-90's in the MTB industry. Is h i t t a w a was also another japanese which produced high end steel tubes but which disappeared at the end of the 80's early 90's.