API range of Plain end, round thread (STC and LTC), Buttress Thread and Extreme-line casing and API NUE, EUE and IJ tubing.
Tubing and casing with Premium connection.

Specification & Standard :
H40, J55, K55, N80(-1,-Q), L80, L80 9Cr&13Cr, P110,Q125, etc.

Size Range:
4 ½ Inches and Up for Casing
1.050 Inches and Up for Tubing