OCTL Rotary Subs include Straight OD Subs, Reduced Section Subs, Cross Over Subs (Drill Pipe to Drill Collar or Drill Collar to Drill Collar) Bit Subs, and Kelly Saver Subs. The Rotary Subs are available in standard lengths of 36" or 48". Any other length can also be supplied.

OCTL Rotary Subs are made from AISI 4140/ 4145H modified alloy steel, fully heat treated to a Brinell Hardness range of 285 – 341 and have an IZOD impact strength of minimum 40 ft-lbs. The connections are machined and finished according to API 7-1. Thread roots are cold rolled after machining and phosphatized to prevent galling during initial make-up. Rotary Subs are shipped with pressed steel thread protectors installed.

Straight OD Subs
    Overall Length
    Diameter
    Bore
    Size and type of upper and lower connections, indicating pin or box,
    and any special features

Reduced Section Subs, additional information required is:
    OD of reduced section
    Length of reduced section: 8", 12", 18", or 24"

    Bit Subs, additional information required is:
    Float Bore, size and type

Kelly Saver Subs, additional information required is:
    Kelly Saver type, stretch or latch-on
    Casing OD and weight for sizing rubber casing protector