Side Entry subs are manufactured from AISI 4145 alloy steel. The side entry sub is manufactured with box by pin connections to match the drill pipe by a welded 2\" 1502 union side outlet. When ordering, please specify: Overall length Sub OD Sub Bore Connection size Product Name ...
Saver Sub is used to extend the life of the Kelly by taking the connection wear each time it is make-up to a drill stem component. The saver sub connection is sacrificed because it can be easily repaired or inexpensively replaced. The saver sub can be equipped with a rubber ...