Cabbirrada caadiga ah ee tuubooyinka birta-la'aanta ah (SS) way kala duwan yihiin iyadoo loo eegayo heerarka gaarka ah ee dalalka iyo warshadaha kala duwan ay raacaan. Si kastaba ha ahaatee, qaar ka mid ah cabbirada caadiga ah ee tuubada birta ah ee aan caadiga ahayn waxaa ka mid ah: - 1/8" (3.175mm) OD ilaa 12" (304.8mm) OD- 0.035" (0.889mm) dhumucda gidaarka ilaa 2" (50.8mm) dhumucda gidaarka - Dhererka caadiga ahi waa caadi ahaan 20 fuudh (6.3 m) Waxaa xusid mudan in cabbirradani ay yihiin tusaalooyin ka mid ah cabbirrada tuubooyinka birta aan-ka-soo-baxa ahayn ee sida caadiga ah loo isticmaalo, iyo warshado ama alaab-qeybiyeyaal kala duwan ayaa laga yaabaa inay bixiyaan cabbirro doorsooma ama caado ah iyadoo loo eegayo shuruudo gaar ah.