The Giant Oil Tools Ltd., Model "GF" Top No-Go Non-Ported Landing Nipple is a tubing nipple for use with
Top no-go locking devices only. It has a seal bore, Top No-Go shoulder, and a locking groove. The Model "GF"
nipple locates, seals, and retains flow control accessories that have a top no-go locking device. The accessories
are run and retrieved on wireline. "GF" Landing Nipples are located throughout the tubing string with larger
diameter seal bores at the top of the tubing string, tapering down to smaller diameter seal bores at the lower
end of the tubing string, creating a tapered tubing ID.
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