ROUND MECHANICAL TUBING

COLD DRAWN SEAMLESS
Carbon: 1026 up to 9-1/2″ O.D., over 9-1/2 O.D. .25 maximum
ASTM A519 Produced to O.D. and I.D. dimensions except where noted

HOT FINISHED SEAMLESS
Carbon: 1026
ASTM A519 Produced to O.D. and wall dimension

D.O.M. (Welded)
Carbon 1020 10 ga. wall and lighter
Carbon 1026 All other sizes
ASTM A513T5 Normally produced to O.D. and I.D. dimensions
ST 52.3

BUTTWELD
Carbon 1012/1020
ASTM A512 Normally produced to O.D. and I.D. dimensions

ELECTRIC WELDED
Carbon 1008/1020
ASTM A513 Type 1 (HR) or Type 2 (CR) produced to O.D. and wall dimension. Sizes over 12″ O.D. are not covered by A513 specification. Consult manufacturer for tolerances.

E.W. tubes up to 1 O.D. are flash-in

E.W. tubes up to 1″ O.D. are flash-in.
E.W. tubes 1″ O.D. and larger are flash controlled to .010 with the following exceptions which are:
  • F.C. .010/.020 maximum
  • 1″ O.D. x 13 ga
  • 1″ O.D. x 12 ga.
  • 1″ O.D. x 11 ga. 
Pipe Size Tube ASTM A500—See Square, Rectangular, and Round Tubing