Pipe is visually inspected for roundness of threads and other visual faults as it is removed from the threading machine
Carbon 0.25%, Manganese 0.95%
All pipe is hydrostatic tested
Steel and wrought iron welded
Protected against oxidation with varnish coating
1.38 in ID x 1.66 in OD
All pipe is roller cut, a visual inspection of seams, excessive galvanizing, mid-welds, poor galvanizing, bends, roundness, under and over weight of the pipe is made at the time it is cut
33.7 kg/sq-mm at 48000 psi, 20 kg/sq-mm at 28500 psi tensile strength
Pipe lengths are cut to a tolerance of + or - 1/16 in of the actual length
All pipe is chaser thread cut to American standard tapered pipe thread standards