The S-pipe Requires Periodical Inspection To Ensure Its Safety

The procedures to check the s-pipe:

Unscrew the two nuts that hold the S-pipe in place along with the six bolts that secure the clamp to remove and inspect the S-pipe

Clean the bore of the S-pipe and inspect for visible signs of pitting, corrosion, or erosion

Use a flashlight and mirror to visually inspect the bore of the S-pipe. A Bore-o-Scope is best for inspection, if available.

Remove and perform an ultrasonic inspection on the S-pipe if visual inspection indicates erosion or corrosion

Check condition of the seals

Apply pipe dope to the threads before re-installing

EVERGROW supplies the NOV TDS-11 SA top drive replacement parts. They are 100% interchangeable with the original ones. Quality guaranteed, welcome to order: S-pipe OEM#117063-7500 EVERGROW #175595-7500