Our Red Thread™ IIA product line was the FIRST composite pipe to
receive UL LISTED (UL 971) approval in 1968 for underground fuel
handling, and continues to surpass strict specifications despite
industry changes over the last 50 years. Not to be out done, our
Dualoy™ product received approval in 1971.
No other competitor can even come close.
© 2018 National Oil well Varco | All Rights Reserved
Some things change.
And some things don’t have to.