IPSCO CONNECTIONS
RUNNING MANUAL
5
Thread Compound Application
Tenaris recommends the use of thread compounds that meet or exceed ISO 13678 or API RP 5A3
requirements.
The use of an applicator “moustache” brush is recommended for the box and a paintbrush for the
pin to best control the application and quantity of thread compound.
Inspect that the brush is clean and free of any dirt. If the brush has been recently cleaned, make sure
that no water or other foreign debris remains in the bristles.
Water that is on the brush, connection, or in the running compound bucket must be completely
removed before applying the compound. The brush and connection can be dried with a clean rag.
Ensure that at least 75% of the connection is covered with "dry moly" prior to applying thread
compound if the connection is bead blasted. "Dry moly" is not required if the connection is
phosphated.
Apply an evenly distributed light coat of thread compound to the box seal and back step threads and
to the pin seal and back step threads as demonstrated in the graphics below. A “light coat” means
that the machined thread profile can be clearly and distinctly seen, with no more than 30% of the
thread height filled with thread compound.
