Extension Springs

  • EN 13906-2: 2001
  • DIN 2089-2: 1984 / DIN 2097: 1973
  • BS 1726-2: 1988 / BS 1726-2: 2002
  • SMI 1993 / 2000
  • IS 7907-1: 1997 / IS 7907-2: 1976
  • JIS B 2704: 2000
  • Techspring